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We demonstrate that a homogeneous spin polarization in one-dimensional structures of finite length in the presence of Bychkov-Rashba spin-orbit coupling decays spontaneously toward a persistent spin helix. The analysis of formation of spin…

Mesoscale and Nanoscale Physics · Physics 2011-06-16 V. A. Slipko , I. Savran , Y. V. Pershin

The existence of spin-currents in absence of any driving external fields is commonly considered an exotic phenomenon appearing only in quantum materials, such as topological insulators. We demonstrate instead that equilibrium spin currents…

Mesoscale and Nanoscale Physics · Physics 2022-01-20 Andrea Droghetti , Ivan Rungger , Angel Rubio , Ilya V. Tokatly

The Rashba and Dresselhaus spin-orbit (SO) interactions in 2D electron gases act as effective magnetic fields with momentum-dependent directions, which cause spin decay as the spins undergo arbitrary precessions about these…

Mesoscale and Nanoscale Physics · Physics 2017-07-26 Florian Dettwiler , Jiyong Fu , Shawn Mack , Pirmin J. Weigele , J. Carlos Egues , David D. Awschalom , Dominik M. Zumbühl

Spintronics in halide perovskites has drawn significant attention in recent years, due to highly tunable spin-orbit fields and intriguing interplay with lattice symmetry. Spin lifetime -- a key parameter that determines the applicability of…

Materials Science · Physics 2023-10-25 Junqing Xu , Kejun Li , Uyen N. Huynh , Jinsong Huang , Ravishankar Sundararaman , Valy Vardeny , Yuan Ping

Spin textures with nontrivial topology, such as vortices and skyrmions, have attracted attention as a source of unconventional magnetic, transport, and optical phenomena. Recently, a new generation of topological spin textures has been…

Strongly Correlated Electrons · Physics 2021-11-08 Satoru Hayami , Yukitoshi Motome

Non-Hermitian systems have been discussed mostly in the context of open systems and nonequilibrium. Recent experimental progress is much from optical, cold-atomic, and classical platforms due to the vast tunability and clear identification…

Mesoscale and Nanoscale Physics · Physics 2024-01-25 Xiao-Xiao Zhang , Naoto Nagaosa

The discovery of hidden spin polarization (HSP) in centrosymmetric nonmagnetic crystals, i.e., spatially distributed spin polarization originated from local symmetry breaking, has promised an expanded material pool for future spintronics.…

Materials Science · Physics 2023-01-04 Weizhao Chen , Mingqiang Gu , Jiayu Li , Panshuo Wang , Qihang Liu

In a semiconductor, collective excitations of spin textures usually decay rather fast due to D'yakonov-Perel' spin relaxation. The latter arises from spin-orbit coupling, which induces wave-vector-dependent spin rotations that, in…

Mesoscale and Nanoscale Physics · Physics 2020-07-01 Daisuke Iizasa , Makoto Kohda , Ulrich Zülicke , Junsaku Nitta , Michael Kammermeier

Spin-orbit coupling (SOC) in conjunction with broken inversion symmetry acts as a key ingredient for several intriguing quantum phenomena viz. persistent spin textures, topological surface states and Rashba-Dresselhaus (RD) effects. The…

Materials Science · Physics 2021-09-28 Preeti Bhumla , Deepika Gill , Sajjan Sheoran , Saswata Bhattacharya

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…

Materials Science · Physics 2015-02-18 Xiuwen Zhang , Qihang Liu , Jun-Wei Luo , Arthur. J. Freeman , Alex Zunger

We review the theoretical motivations and experimental status of searches for stable massive particles (SMPs) which could be sufficiently long-lived as to be directly detected at collider experiments. The discovery of such particles would…

High Energy Physics - Phenomenology · Physics 2009-09-29 M. Fairbairn , A. C. Kraan , D. A. Milstead , T. Sjostrand , P. Skands , T. Sloan

Hidden spin polarization (HSP) emerges in centrosymmetric crystals where visible spin splittings in the real space can be observed because of the lack of inversion symmetry in each local sector. Starting from tight-binding models, we…

Materials Science · Physics 2020-11-18 Shan Guan , Jun-Wei Luo

Optical spin textures with nontrivial topology hold promise for structured light and photonic information processing, yet their generation typically relies heavily on externally structured light with care. This raises questions about their…

Optics · Physics 2026-02-23 Di Liu , Han Liu , Zheng Xi

It is recently noted that in certain centrosymmetric compounds, spin-orbit interaction couples each local sector that lacks inversion symmetry and thus leads to visible spin polarization effects in the real space, dubbed as 'hidden spin…

Mesoscale and Nanoscale Physics · Physics 2021-06-23 Yingjie Zhang , Pengfei Liu , Hongyi Sun , Hu Xu , Qihang Liu

Thermalization phenomena, while ubiquitous in quantum systems, have traditionally been viewed as obstacles to be mitigated. In this study, we demonstrate the ability, instead, to harness thermalization to dynamically engineer and stabilize…

Long spin coherence times of carriers are essential for implementing quantum technologies using semiconductor devices for which, however, a possible obstacle is spin relaxation. For the spin dynamics, decisive features are the band…

Positioned between crystalline solids and liquids, disordered many-particle systems which are stealthy and hyperuniform represent new states of matter that are endowed with novel physical and thermodynamic properties. Such stealthy and…

Statistical Mechanics · Physics 2016-02-10 Eli Chertkov , Robert A. DiStasio , Ge Zhang , Roberto Car , Salvatore Torquato

Three-dimensional topological crystalline insulators were recently predicted and observed in the SnTe class of IV-VI semiconductors, which host metallic surface states protected by crystal symmetries. In this work, we study thin films of…

Mesoscale and Nanoscale Physics · Physics 2014-01-31 Junwei Liu , Timothy H. Hsieh , Peng Wei , Wenhui Duan , Jagadeesh Moodera , Liang Fu

We investigate the persistent spin currents in one- and two-dimensional electron systems with spin-orbit interaction in thermodynamics equilibrium at absolute zero temperature. The persistent spin current is the intrinsic one which is…

Mesoscale and Nanoscale Physics · Physics 2008-03-18 Xiang Zhou , Cheng-Zheng Hu , Zhenyu Zhang , Ling Miao , Xia Wang

Defects with associated electron and nuclear spins in solid-state materials have a long history relevant to quantum information science going back to the first spin echo experiments with silicon dopants in the 1950s. Since the turn of the…