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This work introduces a pair of novel universal MJ spintronic models that precisely mirror the complex spin textures observed in spintronic materials. The spin-orbit coupled (SOC) Hamiltonians H_MJ1 and H_MJ2 reveal a range of novel and…

材料科学 · 物理学 2025-07-29 Manish Kumar Mohanta , Puru Jena

Chiral crystals, due to the lack of inversion and mirror symmetries, exhibit unique spin responses to external fields, enabling physical effects rarely observed in high-symmetry systems. Here, we show that materials from the chiral…

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…

材料科学 · 物理学 2021-09-28 Preeti Bhumla , Deepika Gill , Sajjan Sheoran , Saswata Bhattacharya

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…

介观与纳米尺度物理 · 物理学 2022-01-20 Andrea Droghetti , Ivan Rungger , Angel Rubio , Ilya V. Tokatly

Device concepts in semiconductor spintronics make long spin lifetimes desirable, and the requirements put on spin control by schemes of quantum information processing are even more demanding. Unfortunately, due to spin-orbit coupling…

介观与纳米尺度物理 · 物理学 2017-01-10 John Schliemann

Two-dimensional tungsten-based transition metal dichalcogenides (TMDCs), $MX_{2}$ ($M$: W, Mo; $X$: S, Se, Te) monolayers (MLs) with a $1T'$ structure, serve as significant-gap quantum spin Hall insulators. However, due to the…

介观与纳米尺度物理 · 物理学 2025-04-23 Moh. Adhib Ulil Absor , Muhammad Arifin , Iman Santoso , Harsojo

Spatial, momentum and energy separation of electronic spins in condensed matter systems guides the development of novel devices where spin-polarized current is generated and manipulated. Recent attention on a set of previously overlooked…

Persistent spin textures with collinear spin polarization are promising platforms for spintronics applications. However, their typically relativistic spin-orbit origin leads to weak spin splittings and fragile spin coherence. Here, we…

介观与纳米尺度物理 · 物理学 2026-03-13 Warlley H. Campos , F. C. Fobasso Mbognou , Anna Birk Hellenes , Joseph Poata , Taikang Chen , Jan Priessnitz , Libor Šmejkal

Energy-saving spintronics are believed to be implementable on the systems hosting persistent spin helix (PSH) since they support an extraordinarily long spin lifetime of carriers. However, achieving the PSH requires a unidirectional spin…

强关联电子 · 物理学 2019-09-11 Moh. Adhib Ulil Absor , Fumiyuki Ishii

Spin transistors based on a semiconducting channel attached to ferromagnetic electrodes suffer from fast spin decay and extremely low spin injection/detection efficiencies. Here, we propose an alternative all-in-one spin device whose…

Spin textures, i.e., the distribution of spin polarization vectors in reciprocal space, exhibit diverse patterns determined by symmetry constraints, resulting in a variety of spintronic phenomena. Here, we propose a universal theory to…

材料科学 · 物理学 2024-09-24 Yuntian Liu , Jiayu Li , Pengfei Liu , Qihang Liu

High-resolution tunneling electron spin transport properties (longitudinal spin current (LSC) and spin transfer torque (STT) maps) of topologically distinct real-space magnetic skyrmionic textures are reported by employing a 3D-WKB combined…

材料科学 · 物理学 2020-10-27 Krisztián Palotás , Levente Rózsa , Eszter Simon , László Szunyogh

This article reviews steady-state spin densities and spin currents in materials with strong spin-orbit interactions. These phenomena are intimately related to spin precession due to spin-orbit coupling which has no equivalent in the steady…

介观与纳米尺度物理 · 物理学 2015-05-13 Dimitrie Culcer

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…

介观与纳米尺度物理 · 物理学 2020-07-01 Daisuke Iizasa , Makoto Kohda , Ulrich Zülicke , Junsaku Nitta , Michael Kammermeier

Finding stimuli capable of driving an imbalance of spin-polarised electrons within a solid is the central challenge in the development of spintronic devices. However, without the aid of magnetism, routes towards this goal are highly…

Spin-orbit torque (SOT) has been extensively studied as a key mechanism in spintronics applications. However, conventional SOT materials limit the spin polarization direction to the in-plane orientation, which is suboptimal for efficient…

介观与纳米尺度物理 · 物理学 2025-03-20 Yifei Yang , Jian-Ping Wang

Spin textures in k-space arising from spin-orbit coupling in non-centrosymmetric crystals find numerous applications in spintronics. We present a mechanism that leads to appearance of k-space spin texture due to spontaneous symmetry…

强关联电子 · 物理学 2016-06-24 J. Kunes , D. Geffroy

Spin-orbit coupling (SOC) is a relativistic effect, where an electron moving in an electric field experiences an effective magnetic field in its rest frame. In crystals without inversion symmetry, it lifts the spin degeneracy and leads to…

Materials with large unidirectional Rashba spin-orbit coupling (SOC), resulting in persistent-spin helix states with small spin-precession length, are critical for advancing spintronics. We demonstrate a design principle achieving it…

材料科学 · 物理学 2024-10-22 Sunny Gupta , Manoj N. Mattur , Boris I. Yakobson

Spin coating is an out-of-equilibrium technique for producing polymer films and colloidal crystals quickly and reproducibly. In this review, we present an overview of theoretical and experimental studies of the spin coating of colloidal…