A gauge symmetry makes the quantum Hall graviton gap tunable
Aligning the dynamical metric to a reference geometry controls the chiral spin-2 mode and tunes toward nematic order.
· “Chiral Graviton Theory of Fractional Quantum Hall States”
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Mesoscale and Nanoscale Physics
Semiconducting nanostructures: quantum dots, wires, and wells. Single electronics, spintronics, 2d electron gases, quantum Hall effect, nanotubes, graphene, plasmonic nanostructures
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SiO2-lined cavities radiate up to 200% more heat at 8.5 µm
Trapped polaritonic modes escape via the cavity aperture as sharp infrared emission — no nanofabrication needed.
· “Enhancement of far-field thermal emission via polaritonic cavity modes”
Two magic-angle lines host superconductivity and AHE
Correlated states spread along two twist-angle lines: AHE in polycrystals, superconductivity in quasicrystals.
· “Magic continuum in multi-moir\'e twisted trilayer graphene”
Light helicity flips Chern number in twisted MoTe2
Resonant circularly polarized light reverses spin-valley order in Chern and fractional Chern insulators, and the switch persists.
· “Optical control over topological Chern number in moir\'e materials”
Mirror-odd orders are extinct in first-zone STM peaks
Group theory shows how to recover hidden F2/F4 order from higher Brillouin zones or intra-unit-cell structure.
· “Group theory method for extracting order parameters from scanning tunneling microscopy data”
Nonlinear current sign flip spots Fermi transition in bilayer graphene
Second-harmonic voltage reverses sign at the Lifshitz transition, giving a zero-field probe of Fermi surface topology at 10 K.
· “Detecting Lifshitz Transitions Using Nonlinear Conductivity in Bilayer Graphene”
Erbium in WS2 flakes emits narrow telecom light at room temperature
Millisecond-lived, polarized photons near 1.5 microns make these flakes a building block for 2D quantum photonics.
· “Erbium-implanted WS2 flakes with room-temperature photon emission at telecom wavelengths”
One defect can make graphene topological
A single vacancy gives graphene a protected winding; two aligned vacancies create an artificial spin.
Local Berry curvature splits chiral phonons at zero Chern number
A finite-frequency Chern-Simons term gives Raman phonons a geometric charge of ~2.5 e and new THz drive.
· “Chern-Simons type cross-correlations and geometric Born effective charge of phonons”
Skyrmion diode turns temperature into a linear voltage
Resonant frequency and rectified voltage both scale linearly with temperature, making calibration a two-point fix.
A magnetic field stabilizes superconductivity in hexalayer graphene
The same bubble-like charge pattern behind re-entrant quantum Hall states also hosts superconductivity.
Two current readings reveal a state's Majorana polarization
The ratio of currents with a second lead off versus on equals the squared coherence-factor ratio, giving a local sweet-spot probe.
· “Measuring coherence factors of states in superconductors through local current”
Mobility edges form exact circles in non-Abelian chain
A circle in the complex energy plane separates Anderson-localized from extended eigenstates.
· “Mobility rings in a non-Hermitian non-Abelian quasiperiodic lattice”
Braiding stays nonabelian even for imperfect Majoranas
A compensating coupling restores degeneracy, so a double braid rotates by an angle that vanishes only in the fermion limit.
Nonlinear response pinpoints band singularities in twisted graphene
A second-order voltage flips sign at van Hove points and reaches 70 μm/V·Ω, 10× previous values.
· “Second-Order Conductivity Probes a Cascade of Singularities in a Moir\'e Superlattice”
Quantum capacitance reads a Kitaev chain's parity in single shots
A global superconductor-coupled probe distinguishes even and odd parity where local charge sensing stays blind.
Cavity vacuum fields bend graphene's quantum Hall fan
Quantum Hall plateaus appear at densities more than 20% lower, and the Landau fan bends inward as the magnetic field grows.
Junction shape decides whether a germanium qubit shows up
The model puts the missing Andreev signal below 30 mK thermal noise and shows a 55-nm channel lifts it to 1.3 GHz.
· “Resolving Andreev spin qubits in germanium-based Josephson junctions”
New formula captures phonon friction peaks in 2D and 3D crystals
Linear-response theory matches molecular dynamics on peak positions and shapes across sliding speeds.
· “Phononic frictional losses of a particle crossing a crystal: linear-response theory”
Water in 6-nm channels moves 10,000x slower
Color-center sensors find a slow proton layer pinned by photogenerated charge at the diamond and hBN walls.
· “Slow water in engineered nano-channels revealed by color-center-enabled sensing”
Joint measurement alone can run the simplest quantum computer
A 2040 retrospective says one measurement gate plus AI trained on quantum data can make quantum computers worth building.
ReS2 flakes convert light to current at zero bias
Graphite contacts and hBN encapsulation expose the intrinsic effect, backed by shift-current calculations.
· “Unveiling intrinsic bulk photovoltaic effect in atomically thin ReS2”
Moiré winds Berry dipole into six directions for nonlinear currents
A semiclassical map of graphene on an hBN bilayer shows the local Berry dipole winding around ABA and ABC stackings.
· “Winding Berry dipole on uniaxially strained graphene/hBN/hBN moir\'e trilayers”
An impurity's red-shifted line detects vortices near BKT transition
A repulsive impurity binds to density holes, giving a spectroscopic marker of vortex proliferation in 2D and 3D.
Computing nonlocal kinetic energy once speeds orbital-free DFT by 100x
Accurate nonlocal functionals become practical for large-scale simulations with accuracy nearly unchanged.
Superconductivity dies at a WS2 touch
When active carriers are pushed toward the WS2 interface, superconductivity weakens—pointing to same-spin triplet pairing.
· “Surface-Selective Probe of Spin-Triplet Superconductivity in Rhombohedral Graphene”
Emergent square ice appears in a 3D pyramid magnet array
Nanomagnets on pyramid faces couple purely by dipole forces, enabling a new 3D artificial spin ice.
· “Magnetic-Field Control of Emergent Order in a 3D Dipolar Pyramid Artificial Spin Ice”
SAW pass-by alone loads a moving dot at 0.9997 fidelity
Tune the pass-by distance; the electron transfers with no extra gates and the leading spin error cancels.
· “Electron transfer between surface-acoustic-wave-induced moving and static quantum dots”
Skyrmion lattice hosts magnon frequency combs that shrug off defects
Dual-frequency drive makes chiral edge magnons emit evenly spaced tones, with spacing set by detuning and no threshold.
Triple-dot tweak hits 99.72% spin gate fidelity in GaAs
A third quantum dot tunes orbital levels to keep Rabi speed and coherence high together.
· “High fidelity flopping-mode single spin operation with tuning inter-dot orbital levels”
Time-modulated nanospheres amplify light
A two-frequency polarizability predicts the amplifying resonance and the exact threshold for parametric gain.
· “Optical Response by Time-Varying Plasmonic Nanoparticles”
Diamagnetic substrate keeps YIG damping flat to 30 mK
Replacing GGG with YSGAG removes the low-temperature damping bottleneck for YIG films in quantum magnonics.
Diamond circuit flattens all three bands
Capacitors, inductors, and op-amp inverters create a three-band flat lattice with compact localized states, matching theory.
· “Realization and characterization of an all-bands-flat electrical lattice”
Charge-density wave opens gap at Fermi level in EuTe4
ARPES shows the gap peaks along Gamma-Y and dips along Gamma-X; heat capacity maps the 6.9 K magnetic order.
· “Observation of momentum dependent charge density wave gap in EuTe4”
Dynes-Fulton analysis breaks under nonlinear Josephson phases
Iterative reconstruction with prior knowledge recovers the true profile where standard analysis makes artifacts.
· “Reconstructing Critical Current Density in Josephson Junctions with Phase Non-linearity”
Slice a 3D lattice and keep its disorder phase diagram
A 2D slice built by Schur projection reproduces stable metals and matching 3D critical exponents.
As Sb films thin, conduction and valence bands move apart
ARPES and magnetotransport show quantum confinement lifts the conduction band in the 6 nm film.
Dark-exciton offset dominates the measured trion splitting in WSe2
Only about 4 of the 35 meV is true trion binding; the rest is bright\u2013dark exciton difference.
· “Asymmetric trions in monolayer transition metal dichalcogenides”
Two superconducting condensates in one crystal switch independently
The T-layer gap outlives 2.6 T while the H-layer gap dies at 1 T, enabling selective control.
· “Layer-selective Cooper pairing in an alternately stacked transition metal dichalcogenide”
Stacked graphene ribbons tune exciton lifetimes from 1 ns to 9 µs
Stacking order controls how bright and how long-lived these electron-hole pairs are, from 1 ns to 9.4 µs.
· “Tunable Interlayer Excitons in Bilayer Graphene Nanoribbons”
Steady-state data alone reveal a system's correlation times
New bounds on relaxation and bunching times use only the steady-state photon flux and its parameter derivative.
Hall-strip orbital buildup scales inversely with scattering rate
Closed-form edge profile links band gap and scattering channels through a Dyakonov-Perel decay time.
· “Orbital Hall Effect and Angular Momentum Dynamics in Confined Geometries”
Gradient descent redraws hidden potential maps from conductance data
Automatic differentiation through a transport simulator recovers 144-site potential and magnetization profiles without imaging.
· “Backsolution: A Framework for Solving Inverse Problems via Automatic Differentiation”
Sign flip in magnetoconductivity fingerprints a Rarita-Schwinger-Weyl node
For an isolated fourfold node, interband scattering turns the s=3/2 band's response negative while s=1/2 stays positive.
· “Distinguishing features of longitudinal magnetoconductivity for a Rarita-Schwinger-Weyl node”
Every magnetic phase of CrOCl leaves a phonon fingerprint
Each spin order enlarges the magnetic cell along b, folding new phonons into Raman and infrared spectra.
· “Magnetic phases and zone-folded phonons in a frustrated van der Waals magnet”
MoTe2 diode shows resonant tunneling at 4 K
A vertical MoTe2 quantum well between HfO2 barriers delivers the first MoTe2 resonant-tunneling signature.
T1 tails traced to liftoff residue within 500 nm of junction
Repeated swap-spectroscopy and Monte Carlo modeling show strongly coupled defects live at the lead edges, pointing to a fabrication fix.
· “Statistics of Strongly Coupled Defects in Superconducting Qubits”
Fluxonium can control a cavity without adding self-Kerr
A 1 MHz dispersive shift with tunable Kerr puts a fluxonium ancilla past the transmon limit for bosonic control.
· “Fluxonium as a control qubit for bosonic quantum information”
Staggered gain and loss repositions a topological defect state
One knob moves a zero-energy state between the defect site, the chain edges, and nowhere.
· “Reconfigurable Defect States in Non-Hermitian Topolectrical Chains with Gain and Loss”
MnTe's transport angles match both spin and crystal order
Rotating the field splits resistivity into 2φ magnetic, 6φ crystal, and 3φ altermagnetic Hall parts.
Annealing at 700 C boosts red Eu emission in ZnCdO/ZnMgO superlattices
Europium in ZnCdO quantum wells emits 616-nm light; 700 C annealing brightens it via defect-assisted energy transfer.
Noise sets the dissipation floor for coherent conductors
A single measured current and its fluctuations bound entropy production at any bias, with no heat-current measurement needed.
· “Thermodynamic Uncertainty Relations for Coherent Transport”
Vacuum-annealed Ga2O3 HFET reaches 32/65 GHz
A new regrowth process and Al2O3 passivation push beta-gallium-oxide RF transistors to record speeds with no current collapse.
· “High performance vacuum annealed beta-(AlxGa1-x)2O3/Ga2O3 HFET with f_T/f_MAX of 32/65 GHz”
A 30-tesla field unlocks a hidden density wave in KV3Sb5
Hysteresis, nonlinear transport, and a symmetry change point to a charge order that superconductivity normally hides.
Barium titanate converts microwaves to light and back
Soft-ferroelectric chip hits 1e-6 off-chip efficiency at 8 mK, a step toward quantum processor links.
Monolayers on quasicrystals twist into striped moirés
Analytic one-phonon theory and colloid simulations predict a striped, anisotropic moiré state instead of the usual hexagonal one.
· “Striped twisted state in the orientational epitaxy on quasicrystals”
NiFeCr suppresses π-junction supercurrent by two orders of magnitude
The alloy's 0.36 nm decay length and high resistivity rule it out for cryogenic memory.
· “Comparison of NiFeCr and NiFe in ferromagnetic Josephson junctions”
A missing vortex core kills magnetic frequency combs
Rings without the core stay comb-free at any power; a small in-plane field restores both.
Plasmons bend sharply off a Berry-flux disk at discrete frequencies
A Berry-flux patch deflects plasmons sideways at tunable meV resonances, no magnetic field needed.
· “Anomalous skew scattering of plasmons in a Dirac electron fluid”
Milling and warm ultrasound yield 0.5-nm graphene flakes
A two-hour ethanol bath exfoliates graphite into micro-sized sheets with cleaner crystal order.
YIG/Pt spin-flip efficiency jumps 30-fold when YIG thins to 10 nm
Second-harmonic Hall data tie spin conductance to deep subthermal magnons, so thin films amplify magnon generation.
Spoof-plasmon waveguide couples magnons and phonons across 7 GHz
Coupling peaks when half the magnon wavelength equals the chip width, across a 7 GHz band.
· “Broadband Magnomechanics Enabled by Magnon-Spoof Plasmon Hybridization”
Nanosecond pulses switch Mn2Au by pure spin-orbit torque
A geometry-based cross test separates bulk Néel spin-orbit torque from slower thermal-strain switching.
· “Identifying Switching of Antiferromagnets by Spin-Orbit Torques”
Polyspectra reveal a hidden third state in quantum dot switching
Higher-order current correlations expose dynamics waiting-time analysis cannot distinguish, even in noisy weak measurements.
Pt/NiO terahertz emission separates into charge and spin parts
High-field polarimetry separates nonmagnetic difference-frequency generation from demagnetization of field-canted NiO spins.
Broken-end resonator chain senses with exponential precision
Photon-normalized sensitivity grows with chain length for both perturbation types, up to a finite saturation bound.
· “Quantum Sensing with Driven-Dissipative Su-Schrieffer-Heeger Lattices”
Tin sulfide coating gives graphene a gate-tunable spin Hall effect
Proximity to SnS imprints spin-orbit coupling on trilayer graphene, converting spin current to charge at up to 300 K.
Driven circuit makes a self-correcting GKP qubit
Simulations show bandpass-filter sideband cooling stabilizes the code space at ~100 mK.
· “Self-correcting GKP qubit in a superconducting circuit with an oscillating voltage bias”
Non-Hermitian stack hosts Dirac points only under open boundaries
Linear band crossings with real energy and integer charge appear in a stacked non-Hermitian chain, then vanish when boundaries close.
· “Non-Bloch Dirac Points and Phase Diagram in the Stacked Non-Hermitian SSH Model”
Magic-angle superconductivity collapses under Coulomb screening
Doping a nearby twisted bilayer cuts the critical temperature by more than an order of magnitude, evidence for electronic pairing.
· “Coulomb screening of superconductivity in magic-angle twisted bilayer graphene”
One octahedral twist drives both altermagnetic and electric order
New calculations in BaCuF4, Ca3Mn2O7, and BiFeO3 point to electric-field control of altermagnets
· “Altermagnetic multiferroics and altermagnetoelectric effect”
A single-mode model fails in few-photon two-tone parametric resonance
Drive-tone quantum noise sets the shift when per-photon nonlinearity beats the linewidth.
· “Few-photon degenerate parametric resonance in a two-tone driven microwave resonator”
A single spin and a photon trade energy back and forth
First time-domain vacuum Rabi cycles in a spin qubit, and a photon carries the excitation to a second spin.
· “Controllable interaction between photons and distant spins via vacuum Rabi oscillations”
Atomic collapse needs no critical charge in 1/r^γ wells
For potentials steeper than 1/r, graphene's collapse resonances should space as a power sequence — a clear experimental fingerprint.
· “Atomic collapse of high-order singular potentials in graphene”
Quantum dots hit 2.8x the transform limit in telecom C-band
A GaP interlayer gives ungated, above-band InAs/InP dots near-lifetime-limited linewidths without cavities or gates.
· “Approaching transform-limited linewidths in telecom-wavelength transitions of ungated quantum dots”
Noise speeds charging and stabilizes a six-spin quantum battery
New simulations: strong bit-phase-flip noise locks in stored energy, keeping about 99% extractable as work.
· “Noise-induced Zeno-like effect in a spin-chain quantum battery”
Close-packed nanotubes still lose to 2D materials
A review argues CNTFETs must win on velocity, not density—but the derivation is absent from the text.
Shot noise separates the two Andreev processes in graphene
A gate sweep crossing the Dirac point should show a Fano-factor dip in the doped regime and a rise toward neutrality.
· “Shot noise as a probe for Andreev reflection in graphene-based heterojunctions”
Electron beam carves a 150 nm neutral-exciton channel in gated WS2
Beam-induced trapped charges reverse the gate doping in hBN, forming a switchable nanoscale p-i-n junction.
Layered ferroelectrics beat the thickness limit
In-plane polarization survives at sub-unit-cell thickness, enabling ultrathin memories and voltage-switchable spintronics.
