Engineering chiral-induced spin selectivity in an artificial topological quantum well
arXiv:2603.21964 · doi:10.1103/87b7-rq7h
Abstract
Chiral-induced spin selectivity (CISS) is a striking phenomenon in which spin-unpolarized electrons become spin-polarized after traversing a chiral medium. Theoretical studies have shown that spin-orbit coupling, geometric chirality, and dephasing act cooperatively for this effect to emerge. Inspired by this, we demonstrate a solid-state realization of CISS in an engineered InAs/GaSb quantum well where geometric chirality and dephasing can be introduced controllably. Introducing a chiral structure produces a clear spin polarization whose sign reverses when the chirality is flipped, and whose magnitude grows systematically with the number of dephasing electrodes, while achiral configurations exhibit no spin selectivity. The polarization remains robust even under strong Anderson disorder, showing that the engineered chiral structures provides an intrinsically stable route to spin-selective transport. These results establish a solid-state platform in the topological quantum well system for controllably generating the CISS effect.
References in corpus (25)
- Topological Insulators
- Quantum Spin Hall Effect in Graphene
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Topological Order and the Quantum Spin Hall Effect
- First direct observation of Spin-textures in Topological Insulators : Spin-resolved ARPES as a probe of topological quantum spin Hall effect and Berry's phase
- Evidence for Helical Edge Modes in Inverted InAs/GaSb Quantum Wells
- Quantum Spin Hall Effect in Inverted Type II Semiconductors
- Observation of Quantum Spin Hall States in InAs/GaSb Bilayers under Broken Time-Reversal Symmetry
- Spin-Selective Transport of Electron in DNA Double Helix
- Quantum transport theory for nanostructures with Rashba spin-orbital interaction
- Chirality Induced Spin Selectivity -- The Role of Electron Correlations
- Direct Observation of Chirality-Induced Spin Selectivity in Electron Donor-Acceptor Molecules
- Onsager Relations in Coupled Electric, Thermoelectric and Spin Transport: The Ten-Fold Way
- Topological insulator: a new quantized spin Hall resistance robust to dephasing
- Electric and Magnetic Tuning Between the Trivial and Topological Phases in InAs/GaSb Double Quantum Wells
- Spin selectivity through chiral polyalanine monolayers on semiconductors
- Sequence-dependent spin-selective tunneling along double-stranded DNA
- Influence of dephasing process on the quantum Hall effect and the spin Hall effect
- Effect of gate voltage on spin transport along -helical protein
- Spin-flip scattering in chiral induced spin selectivity using the Riccati equation
- Dynamical theory of chiral-induced spin selectivity in electron donor-chiral molecule-acceptor systems
- Spin-dependent Destructive Quantum Interference Associated with Chirality-induced Spin Selectivity in Circular Single Helix Molecules
- Dynamical simulation of chiral induced spin-polarization and magnetization
- Spin-to-charge conversion modulated by chiral molecules
- Anomalous Magnetoresistance beyond the Jullière Model for Spin Selectivity in Chiral Molecules