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Based on the Korringa-Kohn-Rostoker Green's function technique we present a computational scheme for calculating the electronic structure of layered systems with homogeneous spin-spiral magnetic state. From the self-consistent…

材料科学 · 物理学 2019-10-30 Eszter Simon , Laszlo Szunyogh

Three-dimensional (3D) topological ferroelectric (FE) insulators, in which topological and FE orders naturally coexist, enable field-controlled spintronic devices. In this work, we predict a new structure of bismuth monohalides Bi4Br4 and…

材料科学 · 物理学 2026-04-28 Haohao Sheng , Sheng Zhang , Zhong Fang , Hongming Weng , Zhijun Wang

First-principles density-functional theory calculations show switching magnetization by 90 degree can be achieved in ultrathin BFO film by applying external electric-field. Up-spin carriers appear to the surface with positive field while…

材料科学 · 物理学 2013-02-01 Hong-Jian Feng

Topological aspects of superconductivity in quantum spin-Hall systems (QSHSs) such as thin layers of three-dimensional topological insulators (3D Tis) or two-dimensional Tis are in the focus of current research. We examine hybrid…

介观与纳米尺度物理 · 物理学 2015-11-04 R. W. Reinthaler , G. Tkachov , E. M. Hankiewicz

Quantum spin-liquid van der Waals magnets such as TaS$_2$, TaSe$_2$, and RuCl$_3$ provide a natural platform to explore new exotic phenomena associated with spinon physics, whose properties can be controlled by exchange proximity with…

强关联电子 · 物理学 2021-09-28 Guangze Chen , J. L. Lado

Superconducting spintronics in hybrid superconductor/ferromagnet (S-F) heterostructures provides an exciting potential new class of device. The prototypical super-spintronic device is the superconducting spin-valve, where the critical…

The recently discovered two-dimensional (2D) magnetic insulator CrI$_3$ is an intriguing case for basic research and spintronic applications since it is a ferromagnet in the bulk, but an antiferromagnet in bilayer form, with its magnetic…

介观与纳米尺度物理 · 物理学 2020-05-12 Kapildeb Dolui , Marko D. Petrovic , Klaus Zollner , Petr Plechac , Jaroslav Fabian , Branislav K. Nikolic

The magnetic correlations at the superconductor/ferromagnet (S/F) interfaces play a crucial role in realizing dissipation-less spin-based logic and memory technologies, such as triplet-supercurrent spin-valves and "{\pi}" Josephson…

We present the electronic structure of Sr_{1-(x+y)}La_{x+y}Ti_{1-x}Cr_{x}O_{3} investigated by high-resolution photoemission spectroscopy. In the vicinity of Fermi level, it was found that the electronic structure were composed of a Cr 3d…

强关联电子 · 物理学 2009-11-11 H. Iwasawa , K. Yamakawa , T. Saitoh , J. Inaba , T. Katsufuji , M. Higashiguchi , K. Shimada , H. Namatame , M. Taniguchi

The study of the response of superconducting hybrid structures with magnetic materials to microwave irradiation is necessary for the development of effective superconducting spintronic devices. The role of the magnetic proximity effect…

超导电性 · 物理学 2024-10-22 Dmitriy Seleznyov , Yaroslav Turkin , Natalia Pugach , Lingling Tao

Topological insulators embody a new state of matter characterized entirely by the topological invariants of the bulk electronic structure rather than any form of spontaneously broken symmetry. Unlike the 2D quantum Hall or quantum…

The boundary modes of topological insulators are protected by the symmetries of the non-trivial bulk electronic states. Unless these symmetries are broken, they can give rise to novel phenomena, such as the quantum spin Hall effect in…

介观与纳米尺度物理 · 物理学 2020-07-10 Berthold Jäck , Yonglong Xie , B. Andrei Bernevig , Ali Yazdani

Focusing on the efficient probe and manipulation of single-particle spin states, we investigate the coupled spin and orbital dynamics of a spin 1/2 particle in a harmonic potential subject to ultrastrong spin-orbit interaction and external…

介观与纳米尺度物理 · 物理学 2014-01-21 C. Echeverria-Arrondo , E. Ya. Sherman

We study the spin-orbit torques (SOTs) in Co/Cu/Co magnetic trilayers based on first-principles density-functional theory calculations in the case where the applied electric field lies in-plane, i.e., parallel to the interfaces. We assume…

介观与纳米尺度物理 · 物理学 2018-07-31 Frank Freimuth , Stefan Blügel , Yuriy Mokrousov

We apply the quantum Singwi-Tosi-Land-Sjolander (QSTLS) theory for a study of many-body effects in the quasi-two-dimensional (Q2D) electron liquid (EL) in GaAs/AlxGa1-xAs heterojunctions. The effect of the layer thickness is included…

介观与纳米尺度物理 · 物理学 2007-05-23 Nguyen Thanh Son , Nguyen Quoc Khanh

Time-dependent spin density functional theory (TD-SDFT) allows the theoretical description of spin and magnetization dynamics in electronic systems from first quantum mechanical principles. TD-SDFT accounts for electronic interaction…

材料科学 · 物理学 2024-10-04 Jenna L. Bologa , Carsten A. Ullrich

The control of unconventional magnetism, which displays ferromagnetism-like properties with compensated magnetization, has drawn intense attention for advancing antiferromagnetic spintronics. Here, through symmetry analysis, we propose a…

材料科学 · 物理学 2025-07-15 Yongqian Zhu , Mingqiang Gu , Yuntian Liu , Xiaobing Chen , Yuhui Li , Shixuan Du , Qihang Liu

Proximity effects allow for the adjustment of magnetic properties in a physically elegant way. If two thin ferromagnetic (FM) films are brought into contact, electronic coupling alters their magnetic exchange interaction at their interface.…

We study spin switching effects in finite-size superconducting multivalve structures. We examine $\rm F_1F_2SF_3$ and $\rm F_1F_2SF_3F_4$ hybrids where a singlet superconductor ($\rm S$) layer is sandwiched among ferromagnet ($\rm F$)…

超导电性 · 物理学 2018-03-09 Mohammad Alidoust , Klaus Halterman

Single electron spins in semiconductor quantum dots (QDs) are a versatile platform for quantum information processing, however controlling decoherence remains a considerable challenge. Recently, hole spins have emerged as a promising…