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The influence of chiral molecular potentials on phase-coherent transport in superconducting Josephson junctions is investigated. Within a Bogoliubov-de Gennes tight-binding framework, an SNS junction functionalized by adsorbed chiral…

The interplay of electrons with a chiral medium has a diverse impact across science and technology, influencing drug separation, chemical reactions, and electronic transport. In particular, such electronchirality interactions can…

介观与纳米尺度物理 · 物理学 2024-08-23 Anil Kumar Singh , Kevin Martin , Maurizio Mastropasqua Talamo , Axel Houssin , Nicolas Vanthuyne , Narcis Avarvari , Oren Tal

Dispersion interactions are one of the components of van der Waals (vdW) forces, which play a key role in the understanding of intermolecular interactions in many physical, chemical and biological processes. The theory of dispersion forces…

介观与纳米尺度物理 · 物理学 2022-06-29 M. Geyer , R. Gutierrez , V. Mujica , J. F. Rivas Silva , A. Dianat , G. Cuniberti

Polynuclear magnetic molecules often present dense transmission spectra with many overlapping conduction spin channels. Single-metal complexes display a sparser density of states, which in the presence of a fixed external magnetic field…

介观与纳米尺度物理 · 物理学 2017-12-19 Salvador Cardona-Serra , Alejandro Gaita-Ariño , Efrén Navarro-Moratalla , Stefano Sanvito

Polyalanine molecules (PA) with an {\alpha}-helix conformation gathered recently a lot of interest as the propagation of electrons through the chiral backbone structure comes along with spin polarization of the transmitted electrons. By…

介观与纳米尺度物理 · 物理学 2022-02-16 Nguyen T. N. Ha , L. Rasabathina , O. Hellwig , A. Sharma , G. Salvan , S. Yochelis , Y. Paltiel , L. T. Baczewski , C. Tegenkamp

In this paper, we investigate the effect of chiral-induced spin selectivity (CISS) on the radical pair model of avian magnetoreception. We examine the impact of spin selectivity on the avian compass sensitivity. In this analysis, we also…

生物物理 · 物理学 2023-05-23 Yash Tiwari , Vishvendra Singh Poonia

We analyze two simple model planar molecules: an ionic molecule with D3 symmetry and a covalent molecule with D6 symmetry. Both symmetries allow the existence of chiral molecular orbitals and normal modes that are coupled to each other in a…

介观与纳米尺度物理 · 物理学 2025-11-05 Ivan Pasqua , Gregorio Staffieri , Michele Fabrizio

The control of spin and orbital angular momentum without relying on magnetic materials is commonly accomplished by breaking of inversion symmetry, which enables charge-to-spin conversion and spin selectivity in electron transfer processes…

Nonlocal spin polarization phenomena are thoroughly investigated in the devices made of chiral metallic single crystals of CrNb$_3$S$_6$ and NbSi$_2$ as well as of polycrystalline NbSi$_2$. We demonstrate that simultaneous injection of…

This work investigates the effect of chiral-induced spin selectivity (CISS) on quantum spin coherence in the radical pair mechanism of avian magnetoreception. Additionally, we examine the utilitarian role of coherence for the avian compass…

量子物理 · 物理学 2023-05-23 Yash Tiwari , Vishvendra Singh Poonia

In the past decade, chiral materials have drawn significant attention because it is widely claimed that they can act as spin injectors/detectors due to the chirality-induced spin selectivity (CISS) effect. Nevertheless, the microscopic…

介观与纳米尺度物理 · 物理学 2024-09-30 Sytze H. Tirion , Bart J. van Wees

The interplay between many-body and spin-orbit effects (SOC) can lead to novel phenomena in solids. Chiral spin modes (CSM) are collective spin excitations that arise from such interplay and connect states with opposite chirality, which,…

介观与纳米尺度物理 · 物理学 2025-09-23 Zhexu Shan , Wenjian Su , Kenji Watanabe , Takashi Taniguchi , Shiyao Zhu , Yuanfeng Xu , Yanhao Tang

Altermagnets host intrinsically chirality-splitting spin waves, which offer an ideal platform for chirality-based computing with low energy consumption and fast dynamics. However, achieving precise and efficient control over spin-wave…

介观与纳米尺度物理 · 物理学 2025-10-29 Wen-Tong Li , Yu-Biao Wu , Lin Zhuang , Jian-Tao Wang , Wu-Ming Liu

Current-induced spin magnetization (CISM) specific to chiral crystals is microscopically analyzed using multipole theory to identify the necessary hopping and spin-orbit couplings (SOCs). Tight-binding models capturing the essence of chiral…

介观与纳米尺度物理 · 物理学 2025-03-07 Ryosuke Hirakida , Masaki Kato , Masao Ogata

To realize Majorana fermions having novel physical features has been developed as a key while difficult task in topological superconductor. Here we have proposed another platform to generate Majorana zero modes (MZMs), which is constructed…

介观与纳米尺度物理 · 物理学 2024-07-02 Song Chen , Hua-Hua Fu

Recent studies have demonstrated that magnetization switching in ferromagnets can be achieved through adsorbing chiral molecules on the surface without the need for current or external magnetic fields, offering a low-power mechanism for…

A minimal model is exactly solved for electron spin transport on a helix. Electron transport is assumed to be supported by well oriented $p_z$ type orbitals on base molecules forming a staircase of definite chirality. In a tight binding…

介观与纳米尺度物理 · 物理学 2015-05-26 Ernesto Medina , Luis A. González-Arraga , Daniel Finkelstein-Shapiro , Bertrand Berche , Vladimiro Mujica

We report a new type of spin-orbit coupling (SOC) called geometric SOC. Starting from the relativistic theory in curved space, we derive an effective nonrelativistic Hamiltonian in a generic curve embedded into flat three dimensions. The…

介观与纳米尺度物理 · 物理学 2020-11-24 Atsuo Shitade , Emi Minamitani

We report that spin polarization occurs over millimeters in polycrystalline bulk samples of chiral disilicide NbSi$_2$ and TaSi$_2$. As previously demonstrated in the experiments using single crystals of NbSi$_2$ and TaSi$_2$, electrical…

材料科学 · 物理学 2021-11-08 Hiroaki Shishido , Rei Sakai , Yuta Hosaka , Yoshihiko Togawa

Polarons and spin-orbit (SO) coupling are distinct quantum effects that play a critical role in charge transport and spin-orbitronics. Polarons originate from strong electron-phonon interaction and are ubiquitous in polarizable materials…