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Because of the peculiar coupling of spatial and spin degrees of freedom effected by the Rashba spin-orbit interaction, lateral confinement of a two dimensional electronic system leads to a finite transverse spin polarization near the…

介观与纳米尺度物理 · 物理学 2007-05-23 S. Chesi , G. F. Giuliani

Time-reversal symmetric charge and spin transport through a molecule comprising two-orbital channels and connected to two leads is analyzed. It is demonstrated that spin-resolved currents are generated when spin-flip processes are…

介观与纳米尺度物理 · 物理学 2020-08-05 Yasuhiro Utsumi , Ora Entin-Wohlman , Amnon Aharony

The interaction between electron spin and molecular chirality plays a fundamental role in quantum phenomena, with significant implications for spintronics and quantum computing. The chirality-induced spin selectivity (CISS) effect, where…

Three-dimensional topological insulators protected by both the time reversal (TR) and mirror symmetries were recently predicted and observed. Two-dimensional materials featuring this property and their potential for device applications have…

介观与纳米尺度物理 · 物理学 2019-01-30 Carlos Mera Acosta , Adalberto Fazzio

Chirality-induced spin selectivity (CISS) generates giant spin polarization in transport through chiral molecules, paving the way for novel spintronic devices and enantiomer separation. Unlike conventional transport, CISS magnetoresistance…

介观与纳米尺度物理 · 物理学 2025-01-07 Yufei Zhao , Kai Zhang , Jiewen Xiao , Kai Sun , Binghai Yan

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…

介观与纳米尺度物理 · 物理学 2026-03-24 Lizhou Liu , Peng-Yi Liu , Tian-Yi Zhang , Qing-Feng Sun

Chiral-induced spin selectivity (CISS) is a phenomenon in which electron spins are polarized as they are transported through chiral molecules, and the spin polarization depends on the handedness of the chiral molecule. In this study, we…

介观与纳米尺度物理 · 物理学 2023-02-09 Nguyen Thanh Phuc

Spin currents proportional to the first- and second-order of the electric field are calculated in a specific tight-binding model with time-reversal symmetry. Specifically, a tight-binding model with time-reversal symmetry is constructed…

介观与纳米尺度物理 · 物理学 2024-10-01 Ryosuke Hirakida , Junji Fujimoto , Masao Ogata

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…

介观与纳米尺度物理 · 物理学 2023-12-25 Takemitsu Kato , Yasuhiro Utsumi , Ora Entin-Wohlman , Amnon Aharony

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…

The spin-polarized transport is investigated in a new type of magnetic tunnel junction which consists of two ferromagnetic electrodes separated by a magnetic barrier and a nonmagnetic metallic spacer. Based on the transfer matrix method and…

介观与纳米尺度物理 · 物理学 2009-11-10 Ali A. Shokri , Alireza Saffarzadeh

Spin-orbit coupling (SOC) can induce spin polarization in nonmagnetic 3D crystals when the inversion symmetry is broken, as manifested by the bulk Rashba (R-1) and Dresselhaus (D-1) effects. We determine that these spin polarization effects…

材料科学 · 物理学 2015-02-18 Xiuwen Zhang , Qihang Liu , Jun-Wei Luo , Arthur. J. Freeman , Alex Zunger

A theory of resonant spin-dependent tunneling has been developed for symmetrical double-barrier structures grown of non-centrosymmetrical semiconductors. The dependence of the tunneling transparency on the spin orientation and the wave…

介观与纳米尺度物理 · 物理学 2009-11-10 M. M. Glazov , P. S. Alekseev , M. A. Odnoblyudov , V. M. Chistyakov , S. A. Tarasenko , I. N. Yassievich

Semiclassical expansion of the Wigner function for spin-1/2 fermions having an effective spacetime-dependent mass is used to analyze spin-polarization effects. The existing framework is reformulated to obtain a differential equation…

高能物理 - 唯象学 · 物理学 2024-01-24 Samapan Bhadury , Arpan Das , Wojciech Florkowski , Gowthama K. K. , Radoslaw Ryblewski

Molecular closed shell structures are known to form spin-singlet configurations, resulting from the spin-exchange associated with electron-electron interactions. While the vanishing total spin-moment is an immanent property of the…

介观与纳米尺度物理 · 物理学 2026-04-07 J. Fransson

The effect of spin-disorder scattering on perpendicular transport in a magnetic monolayer is considered within the single-site Coherent Potential Approximation (CPA). The exchange interaction between a conduction electron and localized…

无序系统与神经网络 · 物理学 2009-11-07 Alireza Saffarzadeh

The spin polarization (P) of high-density InSb two-dimensional electron systems (2DESs) has been measured using both parallel and tilted magnetic fields. P is found to exhibit a superlinear increase with the total field B. This P-B…

强关联电子 · 物理学 2011-08-18 K. F. Yang , H. W. Liu , T. D. Mishima , M. B. Santos , K. Nagase , Y. Hirayama

Resonant behavior involving spin-orbit entangled states occurs for spin transport along a narrow channel defined in a two-dimensional electron gas, including an apparent rapid relaxation of the spin polarization for special values of the…

介观与纳米尺度物理 · 物理学 2014-04-02 D. H. Berman , M. Khodas , M. E. Flatté

We investigate the spin-dependent transport properties of two-dimensional electron gas (2DEG) systems formed in diluted magnetic semiconductors and in the presence of Rashba spin-orbit interaction in the framework of the scattering matrix…

材料科学 · 物理学 2009-11-13 Anh T. Ngo , J. M. Villas-Boas , Sergio E. Ulloa

Associated with spin-orbit coupling (SOC) and inversion symmetry breaking, Rashba spin polarization opens a new avenue for spintronic applications that was previously limited to ordinary magnets. However, spin polarization effects in actual…

计算物理 · 物理学 2016-10-12 Qihang Liu , Xiuwen Zhang , J. A. Waugh , D. S. Dessau , Alex Zunger