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We study the effects of quantum fluctuations on a non-coplanar tetrahedral spin structure, which has a scalar chiral order, in the spin-1/2 multiple-spin exchange model with up to the six-spin exchange interactions on a triangular lattice.…

强关联电子 · 物理学 2019-01-25 Shogo Taira , Chitoshi Yasuda , Tsutomu Momoi , Kenn Kubo

Plasma physics give an example of physical system of particles with the long range interaction. At small velocity of particles we can consider the plasma approximately as a system of particles with the Coulomb interaction. The Coulomb…

等离子体物理 · 物理学 2015-04-10 P. A. Andreev

Starting from kinetic theory description of massive spin-1/2 particles in presence of magnetic field, equations for relativistic dissipative non-resistive magnetohydrodynamics are obtained in the small polarization limit. We use a…

Effect of the spin-involved interaction of electrons with impurity atoms or defects to the transport properties of a two-dimensional electron gas is described by using a simplifying two-component model. Components representing spin-up and…

凝聚态物理 · 物理学 2007-05-23 P. Seba , P. Exner , K. N. Pichugin , P. Streda

We investigate the enhancement of spin polarization in a quantum wire in the presence of a constriction and a spin-orbit coupling segment. It is shown that the spin-filtering effect is significantly heightened in comparison with the…

介观与纳米尺度物理 · 物理学 2008-10-07 Jun-Feng Liu , Zhi-Cheng Zhong , Lei Chen , Dingping Li , Chao Zhang , Zhongshui Ma

We have developed a novel technique for detection of spin polarization with a quantum dot weakly coupled to the objective device. The disturbance to the object in this technique is very small since the detection is performed through…

介观与纳米尺度物理 · 物理学 2016-12-21 Sunwoo Kim , Yoshiaki Hashimoto , Taketomo Nakamura , Shingo Katsumoto

It is known that in certain non-bipartite quasi-one dimensional spin systems in a magnetic field, in addition to the usual Pauli coupling of the spins to the field, new parity breaking three spin interactions, i.e. chiral spin interactions,…

强关联电子 · 物理学 2009-10-31 R. Chitra , R. Citro

Spin-polarization effects of an ultrarelativistic electron beam head-on colliding with an ultraintense two-color laser pulse are investigated comprehensively in the quantum radiation-dominated regime. We employ a Monte Carlo method, derived…

等离子体物理 · 物理学 2019-09-18 Huai-Hang Song , Wei-Min Wang , Jian-Xing Li , Yan-Fei Li , Yu-Tong Li

Spin-conserving and spin-flip opaque reflections of electrons from a potential barrier in heterostructures are described. An electric field of the barrier is considered to be the only source of energy spin splitting in the presence of…

介观与纳米尺度物理 · 物理学 2023-07-19 Pawel Pfeffer , Wlodek Zawadzki

In the quantum anomalous Hall effect, chiral edge modes are expected to conduct spin polarized current without dissipation and thus hold great promise for future electronics and spintronics with low energy consumption. However, spin…

介观与纳米尺度物理 · 物理学 2016-07-06 Rui-Xing Zhang , Hsiu-Chuan Hsu , Chao-Xing Liu

We build upon the recently formulated guiding-center kinetic theory for guiding-center plasma by incorporating spin degrees of freedom in the presence of electromagnetic fields. This approach yields a streamlined set of equations for…

核理论 · 物理学 2025-11-21 Rajeev Singh

We study the spin states of a few-electron quantum dot defined in a two-dimensional electron gas, by applying a large in-plane magnetic field. We observe the Zeeman splitting of the two-electron spin triplet states. Also, the one-electron…

介观与纳米尺度物理 · 物理学 2007-05-23 R. Hanson , L. M. K. Vandersypen , L. H. Willems van Beveren , J. M. Elzerman , I. T. Vink , L. P. Kouwenhoven

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…

材料科学 · 物理学 2024-08-07 Binghai Yan

Recent experiments have demonstrated the efficacy of chiral helically shaped molecules in polarizing the scattered electron spin, an effect termed as chiral-induced spin selectivity (CISS). Here we solve a simple tight-binding model for…

介观与纳米尺度物理 · 物理学 2016-02-03 Shlomi Matityahu , Yasuhiro Utsumi , Amnon Aharony , Ora Entin-Wohlman , Carlos A. Balseiro

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

Motivated by a recent finding that Fresnel's phenomenological description of the optical activity in the chiral medium is not self-consistent, we conduct a thorough investigation into the nature of the polarization of a plane light wave. We…

光学 · 物理学 2022-09-19 Chun-Fang Li , Zhi-Juan Hu

Spin-polarized neutron matter is studied using chiral two- and three-body forces. We focus, in particular, on predictions of the energy per particle in ferromagnetic neutron matter at different orders of chiral effective field theory and…

核理论 · 物理学 2015-12-09 F. Sammarruca , R. Machleidt , N. Kaiser

The temperature dependence of electron spin polarization for a narrow quantum Hall system shows behavior analogous to that of a two-dimensional system at major filling factors. At the lowest half-filled quantum Hall state for which no…

介观与纳米尺度物理 · 物理学 2009-10-30 Tapash Chakraborty , K. Niemelä , P. Pietiläinen

We study the quasiclassical dynamics of the cross-Kerr effect. In this approximation, the typical periodical revivals of the decorrelation between the two polarization modes disappear and they remain entangled. By mapping the dynamics onto…

量子物理 · 物理学 2015-06-15 I. Rigas , A. B. Klimov , L. L. Sanchez-Soto , G. Leuchs

The interplay of electronic interactions and frustration in crystalline systems leads to a panoply of correlated phases, including exotic Mott insulators with non-trivial patterns of entanglement. Disorder introduces additional quantum…

强关联电子 · 物理学 2025-01-03 Sunghoon Kim , Mohammad Saad , Dan Mao , Adhip Agarwala , Debanjan Chowdhury