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Using a combination of density functional theory (DFT) and spin-wave theory methods, we investigate the magnetic interactions and spin excitations in semiconducting VI$_3$. Exchange parameters of monolayer, bilayer, and bulk forms are…

材料科学 · 物理学 2021-09-24 Elijah Gordon , V. V. Mkhitaryan , Haijun Zhao , Y. Lee , Liqin Ke

We calculate the magnon dispersion spectra of the two-dimensional zigzag van der Waals antiferromagnet NiPS$_3$ for monolayer, bilayer, and bulk systems as a function of an external magnetic field. We calculate the exchange and anisotropy…

We report a search for exotic spin-spin interactions between neutrons and electrons which could signal new physics beyond the Standard Model using slow neutron polarimetric imaging through a dense medium of polarized electrons. Our dense…

Spin-orbit (SO) interaction critically influences electron spin dynamics and spin transport in bulk semiconductors and semiconductor microstructures. This interaction couples electron spin to dc and ac electric fields. Spin coupling to ac…

介观与纳米尺度物理 · 物理学 2009-11-10 Emmanuel I. Rashba

We show that the parallel magnetic field-induced increase in the critical electron density for the Anderson transition in a strongly interacting two-dimensional electron system is caused by the effects of exchange and correlations. If the…

强关联电子 · 物理学 2017-08-21 V. T. Dolgopolov , A. A. Shashkin , S. V. Kravchenko

Twisted van der Waals materials have become a paradigmatic platform to realize exotic correlated states of matter. Here, we show that a twisted dichalcogenide bilayer (WSe$_2$) encapsulated between a magnetic van der Waals material…

介观与纳米尺度物理 · 物理学 2020-12-17 D. Soriano , J. L. Lado

By considering the spin connection, we deduce the effective equation for a spin-1/2 particle confined to a curved surface with the non-relativistic limit and in the thin-layer quantization formalism. We obtain a pseudo-magnetic field and an…

量子物理 · 物理学 2018-12-19 Guo-Hua Liang , Yong-Long Wang , Meng-Yun Lai , Hui Liu , Hong-Shi Zong , Shi-Ning Zhu

In this review, we discuss the physics of spin-orbit coupled quantum gases in optical lattices. After reviewing some relevant experimental techniques, we introduce the basic theoretical model and discuss some of its generic features. In…

量子气体 · 物理学 2015-09-02 Shizhong Zhang , William S. Cole , Arun Paramekanti , Nandini Trivedi

The interaction between a quantum particle's spin angular momentum and its orbital angular momentum is ubiquitous in nature. In optics, the spin-orbit optical phenomenon is closely related with the light-matter interaction and has been of…

We develop a microscopic theory of multipole interactions and orderings in 5$d^2$ transition metal ion compounds. In a cubic environment, the ground state of 5$d^2$ ions is a non-Kramers $E_g$ doublet, which is nonmagnetic but hosts…

强关联电子 · 物理学 2021-08-25 Giniyat Khaliullin , Derek Churchill , P. Peter Stavropoulos , Hae-Young Kee

The exchange coupling between quantum dot spin qubits is isotropic, which restricts the types of quantum gates that can be formed. Here, we propose a method for controlling anisotropic interactions between spins arranged in a bus geometry.…

介观与纳米尺度物理 · 物理学 2013-08-26 Yun-Pil Shim , Sangchul Oh , Xuedong Hu , Mark Friesen

We determine theoretically the effect of spin-orbit coupling on the magnetic excitation spectrum of itinerant multi-orbital systems, with specific application to iron-based superconductors. Our microscopic model includes a realistic…

超导电性 · 物理学 2018-07-24 Daniel D. Scherer , Brian M. Andersen

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

We investigate the periodic Anderson model composed of an itinerant $c$-band and a strongly localized $f$-band, featuring on-site electron-electron interactions in the $f$-orbitals. The two bands interact via a hybridization term with…

强关联电子 · 物理学 2026-03-02 Sebastião dos Anjos Sousa-Júnior , Julián Faúndez , Rubem Mondaini

We examined what interactions control the sign and strength of the interlayer coupling in van der Waals ferromagnets such as Fe3-xGeTe2, Cr2Ge2Te6, CrI3 and VI3, to find that high-spin orbital interaction across the van der Waals gaps are a…

强关联电子 · 物理学 2022-09-07 Hyun-Joo Koo , Reinhard K. Kremer , Myung-Hwan Whangbo

We propose and study a spin-orbit interaction based mechanism to actively cool down the torsional vibration of a nanomechanical resonator made by semiconductor materials. We show that the spin-orbit interactions of electrons can induce a…

介观与纳米尺度物理 · 物理学 2015-05-13 Nan Zhao , D. L. Zhou , Jia-Lin Zhu , C. P. Sun

The so-called neutron spin resonance consists of a prominent enhancement of the magnetic response at a particular energy and momentum transfer upon entering the superconducting state of unconventional superconductors. In the case of…

超导电性 · 物理学 2019-06-21 Daniel D. Scherer , Brian M. Andersen

The electronic ground state of Ca3LiOsO6 was recently considered within an intermediate coupling regime that revealed J=3/2 spin-orbit entangled magnetic moments. Through inelastic neutron scattering and density functional theory we…

强关联电子 · 物理学 2017-11-29 S. Calder , D. J. Singh , V. O. Garlea , M. D. Lumsden , Y. G. Shi , K. Yamaura , A. D. Christianson

We present a microscopic theory of spin-orbit coupling in the integer quantum Hall regime. The spin-orbit scattering length is evaluated in the limit of long-range random potential. The spin-flip rate is shown to be determined by rare…

凝聚态物理 · 物理学 2009-10-28 D. G. Polyakov

Spin-dependent partial conductances are evaluated in a tight-binding description of electron transport in the presence of spin-orbit (SO) couplings, using transfer-matrix methods. As the magnitude of SO interactions increases, the…

统计力学 · 物理学 2020-03-06 S. L. A. de Queiroz