Magnetochiral charge pumping due to charge trapping and skin effect in chirality-induced spin selectivity

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Chirality-induced spin selectivity (CISS) generates giant polarization in transport through chiral molecules, paving the way for novel spintronic devices and enantiomer separation. Unlike conventional transport, CISS magnetoresistance (MR) violates Onsager's reciprocal relation, exhibiting significant resistance changes when reversing electrode magnetization at zero bias. However, its underlying mechanism remains unresolved. In this work, we propose that MR originates from charge trapping modifies electron tunneling barrier circumvents distinct previous polarization-based models. Charge is governed by non-Hermitian skin effect, where dissipation leads to exponential wavefunction localization ferromagnet-chiral molecule interface. Reversing or chirality alters direction, changing occupation of impurity/defect states (i.e., trapping) – a phenomenon term magnetochiral pumping. Our theory explains why can far exceed ferromagnet molecules violate relation but metals do not. Furthermore, it predicts exotic phenomena beyond framework, including asymmetric induced magnetic fields alone (without ferromagnetic electrodes), as confirmed recent experiments. This work offers deeper understanding opens avenues controlling electrostatic interactions chemical biological systems Some produce polarization, feature termed chirality-induced selectivity. The origin has been hotly debated. Zhao, Zhang coauthors effect lies modification,

Language: Английский

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Chirality-induced spin selectivity and current-driven spin and orbital polarization in chiral crystals

Newton, Journal Year: 2025, Volume and Issue: unknown, P. 100015 - 100015

Published: Feb. 1, 2025

Language: Английский

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A chemical perspective on the chiral induced spin selectivity effect

National Science Review, Journal Year: 2024, Volume and Issue: 11(9)

Published: June 20, 2024

This review discusses opportunities in chemistry that are enabled by the chiral induced spin selectivity (CISS) effect. First, begins with a brief overview of seminal studies on CISS. Next, we discuss different material systems whose properties can be tailored through chemical means, special emphasis hybrid organic-inorganic layered materials exhibit some largest filtering to date. Then, promise CISS for reactions and enantioseparation before concluding.

Language: Английский

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Superconducting Diode Effects: Mechanisms, Materials and Applications

Advanced Physics Research, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

Abstract Superconducting diode effects (SDEs) generally emerge in superconducting systems where both time‐reversal and inversion symmetries are broken, showing nonreciprocal current characteristics: nondissipative one direction ohmic the opposite. Since discovery of SDEs by Ando et ~ al . noncentrosymmetric superconductor [Nb/V/Ta] n 2020, notable progress has been achieved on theoretical experimental fronts. It is proposed that intrinsic closely linked to various exotic states, such as Fulde–Ferrell–Larkin–Ovchinnikov state, topological superconductivity, chiral superconductivity. Recently, have emerged important tools for detecting symmetry breaking states. This advancement not only enhances understanding fundamental nature but also opens new possibilities their applications physics related fields. review focuses recent observation discusses primary mechanisms from perspective material properties breaking. Finally, summarizes observed rectification efficiency SDE devices future research directions this rapidly developing field.

Language: Английский

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Intrinsic orbital origin for the chirality-dependent nonlinear planar Hall effect of topological nodal fermions in chiral crystals

Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(7)

Published: Feb. 19, 2025

Language: Английский

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Linear and nonlinear Edelstein effects in chiral topological semimetals

Deleted Journal, Journal Year: 2025, Volume and Issue: 5, P. 100022 - 100022

Published: Jan. 1, 2025

Recently, there has been growing interest in achieving on-demand control of magnetism through electrical and optical means. In this work, we provide first-principles predictions for the linear nonlinear Edelstein effects (LEE NLEE) chiral topological semimetal CoSi. The LEE NLEE represent first- second-order magnetic responses to external electric fields, enabling precise manipulation magnetization via methods. We demonstrate that although both require time-reversal symmetry breaking, they can still be realized non-magnetic materials, as spontaneously broken by heat dissipation, according second law thermodynamics. Meanwhile, due different inversion selection rules, manifest opposite identical signs two enantiomers CoSi, respectively. further quantify magnitude NLEE, showing electrically or optically induced reach 10 Bohr magneton per unit cell when field strength is comparable with internal atomic field, which on order 1 V/A. Our work offers a systematical approach predicting real paving way potential applications areas such spintronics memories.

Language: Английский

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Accidental BICs and Chiroptical Response of Hollow Channels in Silicon Nanodisk Resonator-Based Metasurfaces for Chiral Sensing

ACS Applied Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Language: Английский

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Chiral topological phononic quasiparticles in enantiomeric crystals SrSi2 and BaSi2

Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(7)

Published: Feb. 10, 2025

Chiral crystals have recently garnered significant interest in condensed matter physics due to their unique electronic and optical properties. In this paper, we explore the connection between chirality of crystal structures topological quasiparticles. We specifically predict analyze several chiral enantiomeric materials, such as SrSi$_2$ BaSi$_2$, which crystallize space groups $P4{_3}32$ $P4{_1}32$. Based on first-principles calculations theoretical analysis, reveal that phonon spectra these materials host various phononic quasiparticles, including charge-2 triple points, Dirac Weyl charge-1 points. Our paper shows opposite structure results quasiparticles with charges distinct surface states. elucidates intrinsic relationship providing promising guidance material platform for investigating physical properties crystals.

Language: Английский

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Single-molecule junctions map the interplay between electrons and chirality

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 19, 2025

The interplay of electrons with a chiral medium has diverse impact across science and technology, influencing drug separation, chemical reactions, electronic transport1-30. In particular, electron-chirality interactions can significantly affect charge spin transport in conductors, making them highly appealing for spintronics. However, an atomistic mapping different remains elusive. Here, we find that helicene-based single-molecule junctions behave as combined magnetic-diode spin-valve device. This dual-functionality enables the identification atomic-scale coexistence interactions: behavior is attributed to interaction between electron's angular momentum magnetic fields, whereas functionality ascribed medium. work uncovers at atomic-scale, identifies their distinct properties, demonstrates how integrating functionalities broaden available methods Electron-chirality conductors. authors show device, enabling interactions.

Language: Английский

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Electronic states in one-dimensional helical crystals: General properties and application to InSeI

Physical review. B./Physical review. B, Journal Year: 2024, Volume and Issue: 109(19)

Published: May 20, 2024

In this paper, we systematically explore several key properties of electronic states in one-dimensional (1D) helical crystals, including the inheritance orbital angular momentum from local atomic orbitals to entire structure, momentum, and emergence helical-induced spin-orbit coupling (hSOC). We then apply comprehensive theoretical framework elucidate structure 1D crystal InSeI. Our analysis reveals influence hSOC, evident spin-mixing energy gaps within band as calculated through density functional theory. Utilizing a combination tight-binding modeling first-principles calculations, ascertain spin-polarized electric response chiral-switchable second-order photocurrent InSeI, characterized Landauer-Buttiker ballistic transport shift current response, respectively. The results highlight potential InSeI for applications spintronics optoelectronics. overarching established work will prove invaluable investigation other systems.

Language: Английский

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