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Electrostatic control of quantum phases in KTaO3-based planar constrictions

T0 review · 3 major / 4 minor · reviewed 2026-08-15 · deepseek-v4-flash

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Pith's one-line read A single etch-defined constriction in a KTaO3-based superconducting 2DEG, with coplanar side gates, tunes the critical current, the BKT transition temperature, and a Coulomb blockade pattern using gate voltages below 1 volt.

desk verdict A genuinely useful fabrication advance with solid gate-tunable BKT/SIT data; the Coulomb blockade interpretation is the one part that outruns the evidence. read the letter →

arxiv 2506.18894 v1 pith:QCNURMYD submitted 2025-06-23 cond-mat.supr-con cond-mat.mes-hall

Jordan T. McCourt , Ethan G. Arnault , Merve Baksi , Samuel J. Poage , Salva Salmani-Rezaie , Divine P. Kumah , Kaveh Ahadi , Gleb Finkelstein This is my paper · ORCID
classification cond-mat.supr-concond-mat.mes-hall
keywords KTaO3oxidetwo-dimensionalelectrongassuperconductingconstrictioncoplanarsidegatesBKTtransitionCoulombblockadeDayembridgeelectrostaticgating
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

The paper claims that one etched constriction in a superconducting KTaO3 two-dimensional electron gas, with side gates formed in the same layer, can be electrostatically tuned through several distinct quantum phases using gate voltages below 1 V. In the superconducting state, the critical current rises from 15 to 170 nA as the gate voltage goes from -1 V to +1 V, and the Berezinskii-Kosterlitz-Thouless (BKT) transition temperature moves from roughly 1 K to 0.2 K. At more negative gate voltages the constriction becomes dissipative and then insulating, where a regular pattern of conductance peaks suggests Coulomb blockade of Cooper pairs. The significance is a scalable, low-voltage route to superconducting transistors and to studying gate-tuned quantum phenomena at oxide interfaces.

What carries the argument

The central object is a Dayem-bridge-style constriction: a narrow superconducting channel, about a micrometer wide, separated from the rest of the film by insulating trenches, with the untouched film on either side acting as coplanar side gates. The argument is carried by the combination of this coplanar geometry with the large low-temperature dielectric permittivity of KTaO3, which lets a side-gate voltage under 1 V change the carrier density by an estimated few times $10^{13}$ $cm^{-2}$ $V^{-1}$. That field effect is what allows the same constriction to be moved between supercurrent, BKT, dissipative, and Coulomb-blockade regimes.

What would settle it

Scanning gate microscopy or a low-temperature superconducting imaging probe that maps supercurrent through the constriction would settle whether a single island exists; if no such island appears, or if the conductance peaks become irregular when averaged over several disorder-induced puddles, the Coulomb-blockade claim would be contradicted.

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Extended reading notes

Core claim

The paper's central claim is that the very high dielectric permittivity of KTaO3, about 5000, turns a simple etched constriction into a strongly tunable superconducting weak link. The constriction follows the Dayem bridge design, but the insulating trenches that define it also leave the surrounding film in place as self-aligned coplanar side gates. With side-gate voltages below 1 V in magnitude, the authors report an order-of-magnitude modulation of the critical current, a gate-tunable BKT transition temperature spanning roughly 0.2 to 1 K, a dissipative regime with resistance changes of several orders of magnitude, and an unusually regular Coulomb blockade pattern that they attribute to Cooper pairs tunneling onto a single superconducting island. The discovery is that all of these regimes appear in one device using a fabrication process that needs only one lithography step and a wet etch, making it compatible with optical lithography.

Load-bearing premise

The Coulomb-blockade interpretation assumes that transport through the constriction is dominated by one well-defined superconducting island in the middle, rather than by many disorder-induced puddles, and the paper concedes that the exact origin of the resonances is difficult to establish.

Editorial extensions

If this is right

  • Superconducting field-effect transistors on KTaO3 can be controlled with less than 1 V, unlike the back-gate voltages of up to 200 V used in earlier work.
  • A single device can be tuned continuously from a supercurrent-carrying weak link through a dissipative regime into an insulating, blockade-like state, allowing phase transitions to be studied without a global back gate.
  • Because the fabrication is one lithography step with a wet etch and uses micrometer-scale features, it should transfer to optical lithography and scale to arrays of individually tunable constrictions.
  • The gate-tunable BKT transition temperature, from about 1 K down to about 0.2 K, provides a controlled knob for studying vortex-antivortex unbinding in a two-dimensional superconductor.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • If the single-island picture is correct, the near 1:1 slope of the conductance resonances with the two side gates could be used to extract the island's capacitance and charging energy from the peak spacing, effectively making the constriction a Cooper-pair transistor.
  • The same low-voltage tuning mechanism should transfer to other oxide 2DEGs with high dielectric constants, such as SrTiO3-based interfaces, since the key ingredient is the dielectric permittivity rather than a KTaO3-specific property.
  • A direct test of the BKT interpretation would be to measure the superfluid stiffness jump at the extracted transition temperature, because the Halperin-Nelson fit alone does not by itself prove vortex unbinding.
  • The regular Coulomb blockade pattern, if confirmed to originate from a single island, would open up gate-defined quantum-dot experiments in oxide superconductors that previously required more complex fabrication.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

3 major / 4 minor

Summary. The manuscript reports transport measurements on wet-etched constrictions in superconducting KTaO3-based heterostructures with coplanar side gates. The authors demonstrate that with |V_SG| < 1 V they can modulate the critical current from roughly 15 nA to 170 nA, tune the Berezinskii–Kosterlitz–Thouless transition temperature from about 1 K to 0.2 K, drive the constriction into a dissipative and eventually insulating regime, and observe a regular pattern of conductance peaks attributed to Coulomb blockade of Cooper pairs on a superconducting island. The central fabrication advance is a single-step electron-beam lithography and wet-etch process that defines the constriction and self-aligned side gates in the same 2DEG plane.

Significance. If the claims hold, this is a valuable advance for oxide electronics: a simple, scalable fabrication route to locally tunable superconducting nanostructures in KTaO3, with low gate voltages enabled by the large dielectric permittivity. The direct measurements of gate-controlled critical current and resistance are compelling and internally consistent, and the BKT analysis is mostly sound but needs quantitative support. The Coulomb-blockade interpretation, however, is currently under-supported and is a headline result, so the paper requires further evidence or a substantial softening of the claim. The paper is well suited to the journal's audience and, with revisions, would be of interest to the oxide-superconductivity and nanodevice communities.

major comments (3)
  1. [Section II, Figure 4(d)-(e)] The attribution of the periodic conductance peaks to Coulomb blockade of Cooper pairs tunneling onto a single superconducting island is under-supported. The text itself concedes 'the exact orgin of the resonances is difficult to establish', and the only supporting arguments are the regularity of the pattern and the near-1:1 diagonal slope. In the symmetric in-plane geometry, any single dominant island located approximately midway between the gates would produce the same near-1:1 slope, so this argument does not distinguish the intended lithographic island from a disorder-induced puddle or a serial array with one dominant bottleneck. No normal-state Coulomb diamond measurements, temperature dependence of the peak conductance, extracted charging energy, or comparison of Cooper-pair versus single-electron periodicity is provided. Because the Coulomb-blockade regime is one of the abstract's headline results, this must be either experimentally strengthened or substantially rephrased.
  2. [Figures 2(c)-(d) and 3(c)-(d)] Quantitative claims—IC varying from 15 to 170 nA, RN varying from about 25 to 7 kOhm, and TBKT varying from about 1 K to 0.2 K—are presented without error bars, fit uncertainties, or measurement-precision statements. For TBKT, the Halperin-Nelson fit parameters and their confidence intervals are not reported, making it impossible to judge whether the claimed near-linear gate dependence is significant or an artifact of the fitting procedure. At minimum, provide fit residuals, parameter uncertainties, and a statement of systematic uncertainties in the temperature and voltage axes.
  3. [Section II, Figure 3] The BKT interpretation rests on the constriction behaving as a homogeneous two-dimensional film. The authors note that the width is much larger than the coherence length, but the constriction is finite in length and the carrier density is expected to be inhomogeneous near the etched edges. Figure 3(b) identifies TBKT via V ∝ I^3 at a single temperature, but no exponent-versus-temperature plot or finite-size analysis is provided. The alternative inhomogeneity interpretation (Ref. [31]) is dismissed with the argument that the supercurrent is monotonic, which does not rule out weakly coupled superconducting puddles. Please provide additional evidence—for example, a scaling collapse of I-V isotherms or a comparison of extracted TBKT with a universal sheet-resistance criterion—or moderate the claim to 'BKT-like transition'.
minor comments (4)
  1. [Section II, Figure 4 caption] The carrier density for the second device is written as 'n = 3.6 × 10 cm^-2' in the text and 'n = 3.6 × 10 cm^-2' in the Figure 4 caption; the exponent is missing and should read 3.6 × 10^13 cm^-2.
  2. [Section II] The word 'orgin' in 'While the exact orgin of the resonances is difficult to establish' should be 'origin'.
  3. [Section VI, Materials and Methods] The sentence 'The device with a conductive polymer to enable the lithography' is incomplete and should be rewritten, for example as 'The device was coated with a conductive polymer to enable the lithography.'
  4. [Figure 3(b)] The identification that the T = 1.14 K curve is close to the transition would be more convincing if the exponent of the I-V power law were shown explicitly as a function of temperature rather than inferred from a single curve.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the paper's central claims are direct transport measurements, with external fitting formulas and independent material parameters, and no prediction reduces to a fitted input or self-citation chain.

full rationale

The paper's main results are experimental: critical-current modulation, gate-tunable BKT transition, a dissipative regime, and a Coulomb-blockade-like conductance pattern are all presented as direct measurements. The BKT transition temperature is extracted by fitting resistance-temperature curves to the Halperin-Nelson formula, an external theoretical result cited from the literature, and the extracted T_BKT values are a function of measured R(T) data rather than an input to the claim. The gate-efficiency estimate uses an independently measured dielectric permittivity of KTaO3 and a standard parallel-plate capacitance relation, so it is not a fitted parameter disguised as a prediction. The Coulomb-blockade interpretation is explicitly hedged by the authors' statement that 'the exact origin of the resonances is difficult to establish,' which reflects interpretational uncertainty rather than a definitional reduction of the data to the conclusion. The paper's self-citations, chiefly to the authors' earlier KTaO3 work for growth context and anisotropic superconductivity, provide background and fabrication details but are not load-bearing for the central claims. No step in the paper fits the listed circularity patterns: no self-definitional quantity, no fitted input called a prediction, no uniqueness theorem imported from the authors' prior work, and no ansatz smuggled in via citation. The honest finding is that the derivation chain is self-contained with respect to the measurements; any weakness in the Coulomb-blockade interpretation is a question of evidence sufficiency, not circularity.

Assumptions & free parameters 2 free parameters · 4 assumptions · 1 invented entities

The experimental claims rest mainly on standard BKT and BCS theory, a literature value for KTaO3 permittivity, and an inferred superconducting island. The gate-channel distance in the density estimate is unspecified, and the island is not independently verified.

free parameters (2)
  • T_BKT (Halperin-Nelson fit parameter) = 0.2 to 1.0 K depending on V_SG
    Extracted by fitting R(T) curves to the Halperin-Nelson formula; no uncertainties are reported, and the resulting T_BKT versus V_SG is a central plotted result.
  • gate-to-channel distance d = not specified
    Used in the estimate delta n approximately epsilon_r epsilon_0/(e d) V_SG; the paper does not state d, so the claimed density tunability of a few times 10^13 cm^-2 V^-1 is an order-of-magnitude estimate rather than a measured quantity.
assumptions (4)
  • domain assumption BKT theory and the Halperin-Nelson formula describe R(T) in the constriction
    Used in Section II (Figure 3) to extract T_BKT; the constriction is treated as a 2D film because its width is tens to hundreds of times the coherence length, but density varies across it.
  • domain assumption KTaO3 dielectric permittivity is about 5000 and remains in the thousands at fields up to about 10 kV/cm
    From Refs. [15,25,26]; the strong side-gate efficiency and the delta n estimate rest on this permittivity, which is not measured in the device.
  • domain assumption The wet etch leaves exposed regions insulating and resist-protected regions conductive
    Foundation of the side-gate geometry; asserted in Section II and indirectly supported by transport, but the etch selectivity is not directly characterized.
  • standard math BCS relation Delta_BCS = 1.76 k_B T_C applies to the bulk film
    Used to estimate Delta_BCS of about 180 micro-eV for comparison with the I_C R_N product.
invented entities (1)
  • Superconducting island in the constriction
    purpose: Proposed source of the Coulomb blockade-like conductance peaks in the lower-density device
    The peaks are reproducible and gate-tunable, but there is no direct imaging or independent probe of an island; the paper concedes the exact origin is difficult to establish.

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Pith. "Pith review of Electrostatic control of quantum phases in KTaO3-based planar constrictions." pith.science (2026). https://pith.science/paper/QCNURMYD

@misc{pith2026250618894,
  author       = {Pith},
  title        = {Pith review of: Electrostatic control of quantum phases in KTaO3-based planar constrictions},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/QCNURMYD}},
  note         = {Machine review of arXiv:2506.18894}
}
read the original abstract

Two-dimensional electron gases (2DEGs) formed at complex oxide interfaces offer a unique platform to engineer quantum nanostructures. However, scalable fabrication of locally addressable devices in these materials remains challenging. Here, we demonstrate an efficient fabrication approach by patterning narrow constrictions in a superconducting KTaO3-based heterostructure. The constrictions are individually tunable via the coplanar side gates formed within the same 2DEG plane. Our technique leverages the high dielectric permittivity of KTaO3 (epsilon_r ~ 5000) to achieve strong electrostatic modulation of the superconducting 2DEG. Transport measurements through the constriction reveal a range of transport regimes: Within the superconducting state, we demonstrate efficient modulation of the critical current and Berezinskii Kosterlitz Thouless (BKT) transition temperature at the weak link. Further tuning of the gate voltage reveals an unexpectedly regular Coulomb blockade pattern. All of these states are achievable with a side gate voltage |V_SG| < 1 V. The fabrication process is scalable and versatile, enabling a platform both to make superconducting field-effect transistors and to study a wide array of physical phenomena present at complex oxide interfaces.

Figures

Figures reproduced from arXiv: 2506.18894 by the authors.

Figure 1
Figure 1. FIG. 1 [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 2
Figure 2. FIG. 2 [PITH_FULL_IMAGE:figures/full_fig_p003_2.png] view at source ↗
Figure 3
Figure 3. FIG. 3 [PITH_FULL_IMAGE:figures/full_fig_p003_3.png] view at source ↗
Figures from the paper (1 more)
Figure 4
Figure 4. Figure 4: a presents the differential resistance map of the constriction made in the film with the reduced density of n = 3.6 × 10 cm−2 . Although the device geometry is the same as in [PITH_FULL_IMAGE:figures/full_fig_p004_4.png]

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Works this paper leans on

44 extracted references · 41 canonical work pages

  1. [31]

    Venditti, J

    G. Venditti, J. Biscaras, S. Hurand, N. Bergeal, J. Lesueur, A. Dogra, R. C. Budhani, Mintu Mon- dal, John Jesudasan, Pratap Raychaudhuri, S. Caprara, and L. Benfatto. Nonlinear I-V characteristics of two- dimensional superconductors: Berezinskii-Kosterlitz- 7 Thouless physics versus inhomogeneity. Physical Review B, 100(6):064506, August 2019. Publisher:...

    work page 2019

  2. [1]

    H. Y. Hwang, Y. Iwasa, M. Kawasaki, B. Keimer, N. Na- gaosa, and Y. Tokura. Emergent phenomena at oxide interfaces. Nature Materials, 11(2):103–113, February

    work page

  3. [2]

    Bretz-Sullivan, Xianjing Zhou, John Pearson, Brandon Fisher, J

    Changjiang Liu, Xi Yan, Dafei Jin, Yang Ma, Haw-Wen Hsiao, Yulin Lin, Terence M. Bretz-Sullivan, Xianjing Zhou, John Pearson, Brandon Fisher, J. Samuel Jiang, Wei Han, Jian-Min Zuo, Jianguo Wen, Dillon D. Fong, Jirong Sun, Hua Zhou, and Anand Bhattacharya. Two- dimensional superconductivity and anisotropic transport at KTaO 3 (111) interfaces. Science, 37...

    work page 2021

  4. [3]

    Electric field control of supercon- ductivity at the LaAlO3/KTaO3(111) interface

    Zheng Chen, Yuan Liu, Hui Zhang, Zhongran Liu, He Tian, Yanqiu Sun, Meng Zhang, Yi Zhou, Jirong Sun, and Yanwu Xie. Electric field control of supercon- ductivity at the LaAlO3/KTaO3(111) interface. Science, 372(6543):721–724, May 2021. Publisher: American As- sociation for the Advancement of Science

    work page 2021

  5. [4]

    Weiliang Qiao, Yang Ma, Jiaojie Yan, Wenyu Xing, Yunyan Yao, Ranran Cai, Boning Li, Richen Xiong, X. C. Xie, Xi Lin, and Wei Han. Gate tunability of the superconducting state at the EuO/KTaO3 (111) in- terface. Physical Review B, 104(18):184505, November

    work page

  6. [5]

    Arnault, Athby H

    Ethan G. Arnault, Athby H. Al-Tawhid, Salva Salmani- Rezaie, David A. Muller, Divine P. Kumah, Moham- mad S. Bahramy, Gleb Finkelstein, and Kaveh Ahadi. Anisotropic superconductivity at KTaO 3 (111) inter- faces. Science Advances, 9(7), February 2023

    work page 2023

  7. [6]

    Spontaneous rotational symmetry break- ing in KTaO3 heterointerface superconductors

    Guanqun Zhang, Lijie Wang, Jinghui Wang, Guoan Li, Guangyi Huang, Guang Yang, Huanyi Xue, Zhongfeng Ning, Yueshen Wu, Jin-Peng Xu, Yanru Song, Zhenghua An, Changlin Zheng, Jie Shen, Jun Li, Yan Chen, and Wei Li. Spontaneous rotational symmetry break- ing in KTaO3 heterointerface superconductors. Nature Communications, 14(1):3046, May 2023. Publisher: Na- ...

    work page 2023

  8. [7]

    Al-Tawhid, Samuel J

    Athby H. Al-Tawhid, Samuel J. Poage, Salva Salmani- Rezaie, Antonio Gonzalez, Shalinee Chikara, David A. Muller, Divine P. Kumah, Maria N. Gastiasoro, Jos´ e Lorenzana, and Kaveh Ahadi. Enhanced Critical Field of Superconductivity at an Oxide Interface. Nano Letters, 23(15):6944–6950, August 2023. Publisher: American Chemical Society. 6

    work page 2023

Show all 44 references
  1. [8]

    Caviglia

    Ulderico Filippozzi, Graham Kimbell, Davide Pizzi- rani, Siobhan McKeown Walker, Chiara Cocchi, Ste- fano Gariglio, Marc Gabay, Steffen Wiedmann, and Andrea D. Caviglia. High-field superconductivity from atomic-scale confinement and spin-orbit coupling at (111) LaAlO3/KTaO3 in...

    2024

  2. [9]

    Mallik, G

    S. Mallik, G. C. M´ enard, G. Sa¨ ız, H. Witt, J. Lesueur, A. Gloter, L. Benfatto, M. Bibes, and N. Bergeal. Super- fluid stiffness of a KTaO3-based two-dimensional electron gas. Nature Communications, 13(1):4625, August 2022. Publisher: Nature Publishing Group

    2022

  3. [10]

    Jiang, Dafei Jin, Michael R

    Junyi Yang, Adem Imamovic, Xinhao Li, Xianjing Zhou, John Pearson, Changjiang Liu, Ulrich Welp, Andrew Higginbotham, Jidong S. Jiang, Dafei Jin, Michael R. Norman, and Anand Bhattacharya. Tuning Kinetic Inductance with Doping in Superconducting Electron Gases at the KTaO3 (111...

  4. [11]

    Sketched Nanoscale KTaO 3 -Based Superconducting Quantum Interference Device

    Muqing Yu, Nicholas Hougland, Qianheng Du, Junyi Yang, Sayanwita Biswas, Ranjani Ramachandran, Dengyu Yang, Anand Bhattacharya, David Pekker, Patrick Irvin, and Jeremy Levy. Sketched Nanoscale KTaO 3 -Based Superconducting Quantum Interference Device. Physical Review X, 15(1):...

    2025

  5. [12]

    Krantz, Alexander Tyner, Pallab Goswami, and Venkat Chandrasekhar

    Patrick W. Krantz, Alexander Tyner, Pallab Goswami, and Venkat Chandrasekhar. Intrinsic magnetism in KTaO3 heterostructures. Applied Physics Letters, 124(9):093102, February 2024

    2024

  6. [13]

    Super- conducting stripes induced by ferromagnetic proximity in an oxide heterostructure

    Xiangyu Hua, Zimeng Zeng, Fanbao Meng, Hongxu Yao, Zongyao Huang, Xuanyu Long, Zhaohang Li, Youfang Wang, Zhenyu Wang, Tao Wu, Zhengyu Weng, Yihua Wang, Zheng Liu, Ziji Xiang, and Xianhui Chen. Super- conducting stripes induced by ferromagnetic proximity in an oxide heterostru...

    2024

  7. [14]

    Coexistence of Ferromag- netism and Superconductivity at KTaO 3 Heterointer- faces

    Zhongfeng Ning, Jiahui Qian, Yixin Liu, Fan Chen, Mingzhu Zhang, Liwei Deng, Xinli Yuan, Qingqin Ge, Hua Jin, Guanqun Zhang, Wei Peng, Shan Qiao, Gang Mu, Yan Chen, and Wei Li. Coexistence of Ferromag- netism and Superconductivity at KTaO 3 Heterointer- faces. Nano Letters, 24...

    2024

  8. [15]

    Geyer, Bill Riddle, Jerzy Krupka, and Lynn A

    Richard G. Geyer, Bill Riddle, Jerzy Krupka, and Lynn A. Boatner. Microwave dielectric properties of single-crystal quantum paraelectrics KTaO3 and SrTiO3 at cryogenic temperatures. Journal of Applied Physics, 97(10):104111, May 2005

    2005

  9. [16]

    Bockrath, Kin Fai Mak, and Fan Zhang

    Chun Ning Lau, Marc W. Bockrath, Kin Fai Mak, and Fan Zhang. Reproducibility in the fabrication and physics of moir´ e materials. Nature, 602(7895):41–50, February 2022. Publisher: Nature Publishing Group

    2022

  10. [17]

    Mannhart and D

    J. Mannhart and D. G. Schlom. Oxide Interfaces—An Opportunity for Electronics. Science, 327(5973):1607– 1611, March 2010. Publisher: American Association for the Advancement of Science

    2010

  11. [18]

    Darrell G. Schlom. Perspective: Oxide molecular-beam epitaxy rocks! APL Materials, 3(6):062403, May 2015

    2015

  12. [19]

    M. Coll, J. Fontcuberta, M. Althammer, M. Bibes, H. Boschker, A. Calleja, G. Cheng, M. Cuoco, R. Dittmann, B. Dkhil, I. El Baggari, M. Fanciulli, I. Fina, E. Fortunato, C. Frontera, S. Fujita, V. Gar- cia, S.T.B. Goennenwein, C.-G. Granqvist, J. Grol- lier, R. Gross, A. Hagfel...

    2019

  13. [20]

    Electronic-grade epitaxial (111) KTaO3 heterostructures

    Jieun Kim, Muqing Yu, Jung-Woo Lee, Shun-Li Shang, Gi-Yeop Kim, Pratap Pal, Jinsol Seo, Neil Campbell, Ki- tae Eom, Ranjani Ramachandran, Mark S Rzchowski, Sang Ho Oh, Si-Young Choi, Zi-Kui Liu, Jeremy Levy, and Chang-Beom Eom. Electronic-grade epitaxial (111) KTaO3 heterostru...

    2024

  14. [21]

    P. W. Anderson and A. H. Dayem. Radio-Frequency Ef- fects in Superconducting Thin Film Bridges. Physical Review Letters, 13(6):195–197, August 1964. Publisher: American Physical Society

    1964

  15. [22]

    An alternative route towards micro- and nano-patterning of oxide films

    G Bridoux, J Barzola-Quiquia, F Bern, W B¨ ohlmann, I Vrejoiu, M Ziese, and P Esquinazi. An alternative route towards micro- and nano-patterning of oxide films. Nanotechnology, 23(8):085302, March 2012

    2012

  16. [23]

    A. M. R. V. L. Monteiro, D. J. Groenendijk, N. Manca, E. Mulazimoglu, S. Goswami, Ya. Blanter, L. M. K. Van- dersypen, and A. D. Caviglia. Side Gate Tunable Joseph- son Junctions at the LaAlO 3 /SrTiO3 Interface. Nano Letters, 17(2):715–720, February 2017

    2017

  17. [24]

    Klapwijk, and An- drea D

    Holger Thierschmann, Emre Mulazimoglu, Nicola Manca, Srijit Goswami, Teun M. Klapwijk, and An- drea D. Caviglia. Transport regimes of a split gate superconducting quantum point contact in the two-dimensional LaAlO3/SrTiO3 superfluid. Nature Communications, 9(1):2276, June 2018...

    2018

  18. [25]

    S. H. Wemple. Some Transport Properties of Oxygen- Deficient Single-Crystal Potassium Tantalate (KTaO3). Physical Review, 137(5A):A1575–A1582, March 1965. Publisher: American Physical Society

    1965

  19. [26]

    Dielectric and Optical Properties of KTaO3

    Yoshimasa Fujii and Tunetaro Sakudo. Dielectric and Optical Properties of KTaO3. Journal of the Physical Society of Japan, 41(3):888–893, September 1976. Pub- lisher: The Physical Society of Japan

    1976

  20. [27]

    Norman, and Anand Bhattacharya

    Changjiang Liu, Xianjing Zhou, Deshun Hong, Brandon Fisher, Hong Zheng, John Pearson, Jidong Samuel Jiang, Dafei Jin, Michael R. Norman, and Anand Bhattacharya. Tunable superconductivity and its origin at KTaO3 in- terfaces. Nature Communications, 14(1):951, February 2023

    2023

  21. [28]

    Rosen, and David Goldhaber- Gordon

    Evgeny Mikheev, Ilan T. Rosen, and David Goldhaber- Gordon. Quantized critical supercurrent in SrTiO3- based quantum point contacts. Science Advances, 7(40):eabi6520, October 2021. Publisher: American As- sociation for the Advancement of Science

    2021

  22. [29]

    Introduction to Superconductivity

    Michael Tinkham. Introduction to Superconductivity. Mcgraw-Hill Inc., 1996

    1996

  23. [30]

    B. I. Halperin and David R. Nelson. Resistive transition in superconducting films. Journal of Low Temperature Physics, 36(5):599–616, September 1979

    1979

  24. [32]

    A. Ron, E. Maniv, D. Graf, J.-H. Park, and Y. Da- gan. Anomalous Magnetic Ground State in an LaAlO3/SrTiO3 Interface Probed by Transport through Nanowires. Physical Review Letters, 113(21):216801, November 2014. Publisher: American Physical Society

    2014

  25. [33]

    Williams, and David Goldhaber-Gordon

    Patrick Gallagher, Menyoung Lee, James R. Williams, and David Goldhaber-Gordon. Gate-tunable supercon- ducting weak link and quantum point contact spec- troscopy on a strontium titanate surface.Nature Physics, 10(10):748–752, October 2014. Publisher: Nature Pub- lishing Group

    2014

  26. [34]

    V. V. Bal, M. M. Mehta, S. Ryu, H. Lee, C. M. Folkman, C. B. Eom, and V. Chandrasekhar. Gate-tunable su- perconducting weak link behavior in top-gated LaAlO3- SrTiO3. Applied Physics Letters, 106(21):212601, May 2015

    2015

  27. [35]

    Srijit Goswami, Emre Mulazimoglu, Ana M. R. V. L. Monteiro, Roman W¨ olbing, Dieter Koelle, Reinhold Kleiner, Ya M. Blanter, Lieven M. K. Vandersypen, and Andrea D. Caviglia. Quantum interference in an interfacial superconductor. Nature Nanotechnology, 11(10):861–865, October ...

    2016

  28. [36]

    Stornaiuolo, D

    D. Stornaiuolo, D. Massarotti, R. Di Capua, P. Lucig- nano, G. P. Pepe, M. Salluzzo, and F. Tafuri. Signatures of unconventional superconductivity in the LaAlO 3 / SrTiO 3 two-dimensional system. Physical Review B, 95(14):140502, April 2017

    2017

  29. [37]

    Claeson, Thilo Bauch, Floriana Lom- bardi, Andrea Caviglia, R

    Gyanendra Singh, Claudio Guarcello, Edouard Lesne, Dag Winkler, T. Claeson, Thilo Bauch, Floriana Lom- bardi, Andrea Caviglia, R. Citro, Cuoco Mario, and A. Kalabukhov. Gate-tunable pairing channels in super- conducting non-centrosymmetric oxides nanowires. npj Quantum Materia...

    2022

  30. [38]

    Fong, Anand Bhattacharya, Patrick Irvin, and Jeremy Levy

    Muqing Yu, Changjiang Liu, Dengyu Yang, Xi Yan, Qianheng Du, Dillon D. Fong, Anand Bhattacharya, Patrick Irvin, and Jeremy Levy. Nanoscale Control of the Metal–Insulator Transition at LaAlO3/KTaO3 In- terfaces. Nano Letters, 22(15):6062–6068, August 2022. Publisher: American C...

    2022

  31. [39]

    Oxide Nanoelectronics on Demand

    Cheng Cen, Stefan Thiel, Jochen Mannhart, and Jeremy Levy. Oxide Nanoelectronics on Demand. Science, 323(5917):1026–1030, February 2009. Publisher: Ameri- can Association for the Advancement of Science

    2009

  32. [40]

    Chunhai Yin, Alexander E. M. Smink, Inge Leermak- ers, Lucas M. K. Tang, Nikita Lebedev, Uli Zeitler, Wil- fred G. Van Der Wiel, Hans Hilgenkamp, and Jan Aarts. Electron Trapping Mechanism in LaAlO 3 / SrTiO 3 Het- erostructures. Physical Review Letters, 124(1):017702, January 2020

    2020

  33. [41]

    Electric field control of superconducting fluctuations and quasiparticle interference at oxide inter- faces, June 2025

    Graham Kimbell, Ulderico Filippozzi, Stefano Gariglio, Marc Gabay, Andreas Glatz, Andrey Varlamov, and An- drea Caviglia. Electric field control of superconducting fluctuations and quasiparticle interference at oxide inter- faces, June 2025. arXiv:2506.17056 [cond-mat]

    2025

  34. [2012]

    Publisher: Nature Publishing Group

  35. [2021]

    Publisher: American Physical Society

  36. [2025]

    Publisher: American Chemical Society

Pith tools

Reviewed August 15, 2026 · model on record in the stance chip above.