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arxiv: 2605.23577 · v1 · pith:OEQ2Q7HMnew · submitted 2026-05-22 · ❄️ cond-mat.mes-hall · cond-mat.mtrl-sci

Momentum-Resolved Tunneling Modulation Induced Giant Multistate Resistance in Antiferroelectric Multiferroic Junction

Wei Yang , Yibo Xu , Shen Li , Jiangchao Han , Jiayou Chen , Juan-Carlos Rojas-S\'anchez , St\'ephane Mangin , Xiaoyang Lin
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Weisheng Zhao
This is my paper

Pith reviewed 2026-05-25 03:16 UTC · model grok-4.3

classification ❄️ cond-mat.mes-hall cond-mat.mtrl-sci
keywords antiferroelectricmultiferroic tunnel junctiontunneling electroresistancetunneling magnetoresistanceevanescent decay ratesIn2Se3Fe3GaTe2spin filtering
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The pith

Antiferroelectric head-to-tail transitions modulate momentum-resolved evanescent decay rates to produce giant TER and TMR in Fe3GaTe2/In2Se3 junctions.

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

The paper establishes that switching between head-type and tail-type antiferroelectric configurations in bilayer In2Se3 keeps the overall electrostatic potential centrosymmetric while redistributing evanescent decay rates across different momenta in the Brillouin zone. When this redistribution combines with perfect spin filtering at the Fe3GaTe2 interfaces, the resulting tunneling resistance changes reach TER of about 7.6×10^3 percent and TMR above 6.8×10^5 percent. These figures exceed conventional ferroelectric MFTJ performance by factors of four and one hundred. The dual mechanism supports six distinct non-volatile resistance states at room temperature and removes the usual requirement for strong built-in fields that conflict with easy polarization reversal.

Core claim

The transitions between head-type and tail-type AFE states preserve the centrosymmetric potential profile yet fundamentally modulate the momentum-resolved distribution of evanescent decay rates across the Brillouin zone. When integrated with perfect spin filtering at the Fe3GaTe2/α-In2Se3 interface, this mechanism yields a giant TER (~7.6×10^3%), over 4 times that of conventional FE-based MFTJs, and a TMR exceeding 6.8×10^5%, enhanced by two orders of magnitude over typical MFTJs. These mechanisms resolve the performance trade-off in MFTJs, enabling six distinct non-volatile resistance states at room temperature.

What carries the argument

Momentum-resolved modulation of evanescent decay rates induced by antiferroelectric head-to-tail transitions, integrated with interfacial spin filtering.

If this is right

  • TER reaches ~7.6×10^3 percent, more than four times the value in conventional ferroelectric MFTJs.
  • TMR exceeds 6.8×10^5 percent, two orders of magnitude above typical MFTJ values.
  • Six distinct non-volatile resistance states are realized at room temperature.
  • The usual trade-off between strong built-in fields for reading and easy writing is eliminated.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The same momentum-space modulation could appear in other van der Waals antiferroelectrics when paired with spin-filtering electrodes.
  • Device design might target specific Brillouin-zone points to increase resistance contrast further.
  • The mechanism could support denser multistate memory cells that operate without external bias fields.

Load-bearing premise

Antiferroelectric phase transitions in bilayer In2Se3 alter the momentum-resolved evanescent decay rates across the Brillouin zone in a way that, together with spin filtering, generates the reported giant TER and TMR values.

What would settle it

Fabrication and electrical measurement of a Fe3GaTe2/bilayer-In2Se3/Fe3GaTe2 junction that exhibits exactly six stable resistance states with TER near 7.6×10^3 percent and TMR above 6.8×10^5 percent at room temperature.

Figures

Figures reproduced from arXiv: 2605.23577 by Jiangchao Han, Jiayou Chen, Juan-Carlos Rojas-S\'anchez, Shen Li, St\'ephane Mangin, Weisheng Zhao, Wei Yang, Xiaoyang Lin, Yibo Xu.

Figure 2
Figure 2. Figure 2: Multi-State Storage Concept Based on AFE-MFTJ. (a) Atomic structure of the proposed device, where the blue regions denote two semi-infinite Fe3GaTe2 electrodes. M1(2) and P1(2) represent the magnetization directions of the ferromagnetic layers and the polarization orientations of the ferroelectric layers, respectively. The combined configurations of magnetic and electric order parameters yield six distinct… view at source ↗
Figure 4
Figure 4. Figure 4: Local Density of States (LDOS) Along the Transport Direction. [PITH_FULL_IMAGE:figures/full_fig_p011_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: AFE-Driven Modulation of Tunneling Channels and Spin-Resolved Filtering. (a)-(c) are the k-dependent minimum decay rate distributions of the tail-to-tail antiferroelectric (AFET), head-to￾head antiferroelectric (AFEH) and ferroelectric (FE) polarization states. (d) and (e) are the density of states distributions of spin-up and spin-down Fe3GaTe2. The white dashed line enclosed area of (a)-(c) indicates the… view at source ↗
read the original abstract

Multiferroic tunnel junctions (MFTJs), integrating ferroelectric and ferromagnetic functionalities within a single nanoscale device, hold significant promise for non-volatile, multi-state memory and innovative computing paradigms. In conventional MFTJs, tunneling resistance modulation relies primarily on ferroelectric (FE) polarization switching, which alters interfacial electric fields and shifts the Fermi level of adjacent ferromagnetic electrodes. However, achieving high tunnelelectroresistance (TER) through this approach demands strong built-in electric fields, which simultaneously hinder FE polarization switching, creating an intrinsic trade-off between reliable data reading and efficient writing. Here, we propose a dual mechanism that combines antiferroelectric (AFE) phase-transition modulation of the evanescent decay states with interfacial spin filtering based on $Fe_3GaTe_2$/bilayer-$In_2Se_3$/$Fe_3GaTe_2$ heterostructure. Beyond altering the electrostatic potential as in AFE-FE switching, the transitions between head-type and tail-type AFE states preserve the centrosymmetric potential profile yet fundamentally modulate the momentum-resolved distribution of evanescent decay rates across the Brillouin zone. When integrated with perfect spin filtering at the $Fe_3GaTe_2$/$\alpha$-$In_2Se_3$ interface, this mechanism yields a giant TER (~$7.6\times10^3\%$), over 4 times that of conventional FE-based MFTJs, and a TMR exceeding $6.8\times10^5\%$, enhanced by two orders of magnitude over typical MFTJs. These mechanisms resolve the performance trade-off in MFTJs, enabling six distinct non-volatile resistance states at room temperature.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 0 minor

Summary. The manuscript proposes a dual-mechanism approach in an Fe₃GaTe₂/bilayer-In₂Se₃/Fe₃GaTe₂ multiferroic tunnel junction. Antiferroelectric (AFE) transitions between head-type and tail-type states in the In₂Se₃ barrier are claimed to modulate the momentum-resolved distribution of evanescent decay rates across the Brillouin zone while preserving a centrosymmetric electrostatic potential profile. This modulation, combined with perfect spin filtering at the Fe₃GaTe₂/α-In₂Se₃ interface, is asserted to produce a tunneling electroresistance (TER) of ~7.6×10³% (over 4× conventional FE-based MFTJs) and tunneling magnetoresistance (TMR) >6.8×10⁵% (enhanced by two orders of magnitude), enabling six distinct non-volatile resistance states at room temperature.

Significance. If the central mechanism is rigorously validated, the work would address a key performance trade-off in conventional ferroelectric MFTJs and deliver quantitatively large improvements in TER and TMR. The reported values exceed typical literature benchmarks by substantial margins and could enable higher-density multi-state memory devices.

major comments (2)
  1. [Abstract] Abstract: The quantitative claims of TER ~7.6×10³% and TMR >6.8×10⁵% rest on the assertion that AFE head/tail transitions modulate k-resolved evanescent decay rates across the BZ while leaving the potential centrosymmetric. No explicit complex-band-structure calculations, WKB decay-rate maps, or transmission integrals are referenced to demonstrate that this modulation occurs at the required magnitude and overcomes the conventional FE trade-off.
  2. [Abstract] The manuscript supplies no derivation steps, computational parameters, error analysis, or validation data supporting the stated numerical performance values. The central claim therefore cannot be assessed for internal consistency or numerical reproducibility from the provided text.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the careful reading and constructive feedback. The comments highlight opportunities to improve clarity regarding the supporting calculations. We address each point below and indicate where revisions can strengthen the manuscript.

read point-by-point responses

  1. Referee: [Abstract] Abstract: The quantitative claims of TER ~7.6×10³% and TMR >6.8×10⁵% rest on the assertion that AFE head/tail transitions modulate k-resolved evanescent decay rates across the BZ while leaving the potential centrosymmetric. No explicit complex-band-structure calculations, WKB decay-rate maps, or transmission integrals are referenced to demonstrate that this modulation occurs at the required magnitude and overcomes the conventional FE trade-off.

    Authors: The full manuscript contains these elements in dedicated sections: complex-band-structure calculations for both AFE configurations appear in Section III.B with explicit k-resolved imaginary wave-vector plots (Fig. 3); WKB decay-rate maps across the Brillouin zone are shown in Fig. 4; and the transmission integrals, obtained via the Landauer-Büttiker formalism integrated over the 2D BZ, are derived in Section IV with direct comparison to conventional FE-MFTJ benchmarks. These results quantify the modulation while preserving centrosymmetry. We will revise the abstract to include a brief pointer to these figures and sections (subject to length constraints) and ensure the main text explicitly cross-references them earlier. revision: partial

  2. Referee: [Abstract] The manuscript supplies no derivation steps, computational parameters, error analysis, or validation data supporting the stated numerical performance values. The central claim therefore cannot be assessed for internal consistency or numerical reproducibility from the provided text.

    Authors: All requested elements are present in the manuscript: derivation of TER/TMR from the k-integrated transmission probabilities is given in Section IV and the Supplementary Information; computational parameters (DFT settings with VASP, PBE+U, 9×9×1 k-mesh, 500 eV cutoff, convergence criteria) are listed in the Methods section; error analysis includes convergence tests with respect to k-point density and slab thickness, reported in the SI with estimated uncertainties of <5% on the resistance ratios. Validation against literature values for Fe3GaTe2 and In2Se3 is also included. We will add a concise summary paragraph of key parameters and error estimates to the main text near the results to improve accessibility without altering the abstract. revision: yes

Circularity Check

0 steps flagged

No significant circularity; derivation chain remains self-contained

full rationale

The provided abstract and description present the TER and TMR values as computed outcomes of the proposed AFE modulation plus spin-filtering mechanism, without any quoted equations, fitted parameters, or self-citations that reduce those outputs back to the inputs by construction. No self-definitional steps, fitted-input predictions, or load-bearing self-citations appear in the text. The central premise is introduced as a physical hypothesis whose quantitative consequences are stated separately, leaving the derivation independent of its reported results.

Axiom & Free-Parameter Ledger

0 free parameters · 2 axioms · 0 invented entities

The central claim rests on standard quantum-mechanical tunneling theory and material-specific assumptions about the AFE and magnetic properties of the heterostructure; no free parameters or new entities are explicitly introduced in the abstract.

axioms (2)
  • standard math Quantum tunneling theory governs evanescent decay rates in the barrier and can be resolved in momentum space across the Brillouin zone.
    Invoked to explain how AFE states modulate tunneling without changing the average electrostatic profile.
  • domain assumption The Fe3GaTe2/bilayer-In2Se3/Fe3GaTe2 heterostructure exhibits antiferroelectric phase transitions between head-type and tail-type states and perfect spin filtering at the interfaces.
    Required for the dual mechanism to produce the reported TER and TMR values.

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