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Electrical generation of polarized spins in nonmagnetic materials is of great interest for the underlying physics and device potential. One such mechanism is chirality-induced spin selectivity (CISS), with which structural chirality leads…

Chiral induced spin selectivity (CISS) describes efficient spin filtering by chiral molecules. This phenomenon has led to nanoscale manipulation of quantum spins with promising applications to spintronics and quantum computing, since its…

Quantum Physics · Physics 2021-01-01 Xiaopeng Li , Jue Nan , Xiangcheng Pan

For over two decades, the role of structural chirality in spin polarization has been widely investigated, with implications for the origins of life, catalysis, and quantum phenomena. Yet, it remains unclear whether all chirality-induced…

Mesoscale and Nanoscale Physics · Physics 2025-05-12 Pius M. Theiler , Sander Driessen , Matthew C. Beard

We explore the role of molecular vibrations in the chirality-induced spin selectivity (CISS) effect in the context of charge transport through a molecular nanojunction. We employ a mixed quantum-classical approach that combines Ehrenfest…

Mesoscale and Nanoscale Physics · Physics 2024-09-04 Rudolf Smorka , Samuel L. Rudge , Michael Thoss

Recent progress in constructing supramolecular assemblies with hierarchical chirality offers new opportunities to investigate the chirality-induced spin selectivity (CISS) effect and its potential applications. In this work, we…

Mesoscale and Nanoscale Physics · Physics 2025-12-22 Song Chen , Kai-Yuan Zhang , Xi Sun , Shu-Zheng Zhou , Hua-Hua Fu

Theoretical studies on spin-dependent transport through helical molecules with straight spiral geometry have received intense research interest in the past decade, however, the physics in circular helical molecules has still less been…

Mesoscale and Nanoscale Physics · Physics 2024-01-17 Song Chen , Hua-Hua Fu

The spin dynamics of electrons in chiral molecular systems remain a topic of intense interest, particularly regarding whether geometric chirality inherently induces spin polarization in current-carrying electrons. In this work, we employ ab…

Chirality-induced spin selectivity (CISS) is an effect that has recently attracted a great deal of attention in chiral chemistry and that remains to be understood. In the CISS effect, electrons passing through chiral molecules acquire a…

The discovery of the chiral induced spin selectivity effect has provided a novel tool to study how active physical and chemical mechanism may differ in chiral enantiomers, however, the origin of the effect itself is yet an open question. In…

Mesoscale and Nanoscale Physics · Physics 2026-04-17 J. Fransson

Chirality induced spin selectivity, discovered about two decades ago in helical molecules, is a non-equilibrium effect that emerges from the interplay between geometrical helicity and spin-orbit interactions. Several model Hamiltonians…

Mesoscale and Nanoscale Physics · Physics 2019-11-13 J. Fransson

In connection to the chiral-induced spin-selectivity (CISS) effect, we theoretically analyze the electronic and spin states of edges of a finite $p$-orbital helical atomic chain with the intra-atomic spin-orbit interaction (SOI). This model…

Mesoscale and Nanoscale Physics · Physics 2023-12-25 Takemitsu Kato , Yasuhiro Utsumi , Ora Entin-Wohlman , Amnon Aharony

The observation of chiral-induced spin selectivity (CISS) in biological molecules still awaits a full theoretical explanation. In a recent Rapid Communication, Varela et al. [Phys. Rev. B 101, 241410(R) (2020)] presented a model for…

Mesoscale and Nanoscale Physics · Physics 2021-02-24 Ora Entin-Wohlman , Amnon Aharony , Yasuhiro Utsumi

Chiral-induced spin selectivity (CISS) has been shown to enhance magnetic sensitivity in radical pair mechanism (RPM) models under specific Hamiltonian conditions, yet whether these enhancements persist across a broader parameter space…

Biological Physics · Physics 2026-05-22 Tristen Gwynn , Betony Adams , Francesco Petruccione

Radical pairs in the flavoprotein cryptochrome are central to various magnetically sensitive biological processes, including the proposed mechanism of avian magnetoreception. Cryptochrome's molecular chirality has been hypothesized to…

Quantum Physics · Physics 2025-05-06 Luke D. Smith , Sukesh Tallapudi , Matt C. J. Denton , Daniel R. Kattnig

This work investigates electron transport through chiral electrostatic potentials by modeling the system in three spatial dimensions and demonstrates that chirality-induced orbital selectivity (CIOS) produces pronounced enantiospecific…

Mesoscale and Nanoscale Physics · Physics 2025-09-10 Namgee Cho , James Lim , Martin B. Plenio

We report chirality-induced current-in-plane magnetoresistance (CIP-MR) in chiral molecule/ferromagnetic metal bilayer at room temperature. The previously reported chiralityinduced current-perpendicular-to-plane magnetoresistance (CPP-MR)…

Central to spintronics is the interconversion between electronic charge and spin currents, and this can arise from the chirality-induced spin selectivity (CISS) effect. CISS is often studied as magnetoresistance (MR) in two-terminal (2T)…

Mesoscale and Nanoscale Physics · Physics 2020-08-21 Xu Yang , Caspar H. van der Wal , Bart J. van Wees

Recently, chirality-induced spin selectivity (CISS) has been observed in chiral molecules and is attractive for application in magnetoresistance (MR) devices. In this study, we fabricate CISS-based nanodevices consisting of chiral molecules…

Topological aspects of the geometry of DNA and similar chiral molecules have received a lot of attention, while the topology of their electronic structure is less explored. Previous experiments have revealed that DNA can efficiently filter…

Mesoscale and Nanoscale Physics · Physics 2022-10-07 Yizhou Liu , Jiewen Xiao , Jahyun Koo , Binghai Yan

In chemistry and biochemistry, chirality represents the structural asymmetry characterized by non-superimposable mirror images for a material like DNA. In physics, however, chirality commonly refers to the spin-momentum locking of a…

Materials Science · Physics 2024-08-07 Binghai Yan