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相关论文: Electrically Controlled Spin Injection from Giant …

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We report the successful extraction of spin polarized current from the organic-based room temperature ferrimagnetic semiconductor V[TCNE]x (x~2, TCNE: tetracyanoethylene; TC ~ 400 K, EG ~ 0.5 eV, s ~ 10-2 S/cm) and its subsequent injection…

材料科学 · 物理学 2015-05-19 Lei Fang , K. Deniz Bozdag , Chia-Yi Chen , P. A. Truitt , A. J. Epstein , E. Johnston-Halperin

The typical bulk model describing 2D topological insulators (TI) consists of two types of spin-orbit terms, the so-called Dirac term which induces out-of plane spin polarization and the Rashba term which induces in-plane spin polarization.…

介观与纳米尺度物理 · 物理学 2014-01-16 Dietrich G. Rothe , Ewelina M. Hankiewicz

Spin-dependent transport through an endohedral fullerene Co@C$_{60}$ dimer with gold electrodes is explored theoretically using density functional and extended H\"{u}ckel theory. Density of states spin polarizations up to 95%, due to…

介观与纳米尺度物理 · 物理学 2013-05-01 Alireza Saffarzadeh , George Kirczenow

We present a proposal for a fully electrically controllable quantum dot based spin current injector. The device consists of a quantum dot that is strongly coupled to a ferromagnetic electrode on one side and weakly coupled to a nonmagnetic…

介观与纳米尺度物理 · 物理学 2012-10-23 Szabolcs Csonka , Ireneusz Weymann , Gergely Zarand

Electrical manipulation of spin textures inside antiferromagnets represents a new opportunity for developing spintronics with superior speed and high device density. Injecting spin currents into antiferromagnets and realizing efficient…

The aim of the paper is to study the electron spin direction dependence on momentum due to the presence of Rashba spin-orbit coupling in the pseudo-gap phase of Bi2212 bilayer. The non-trivial spin texture in k-space is found tuneable by…

超导电性 · 物理学 2022-05-25 Udai Prakash Tyagi , Partha Goswami

We investigated spin injection by spin pumping from a spin-injector(NiFe) into a spin-sink to detect spin fluctuations in the spin-sink. By scanning the ordering-temperature of several magnetic transitions, we found that enhanced spin…

Generation and manipulation of exciton polaritons with controllable spin could deeply impact spintronic applications, quantum simulations, and quantum information processing, but is inherently challenging due to the charge neutrality of the…

光学 · 物理学 2024-04-23 Yutao Wang , Giorgio Adamo , Son Tung Ha , Jingyi Tian , Cesare Soci

We study spin control for an electron confined in a flake of silicene. We find that the lowest-energy conduction-band levels are split by the diagonal intrinsic spin-orbit coupling into Kramers doublets with a definite projection of the…

介观与纳米尺度物理 · 物理学 2018-04-30 Bartlomiej Szafran , Alina Mrenca-Kolasinska , Bartlomiej Rzeszotarski , Dariusz Zebrowski

The spin-splitting energy bands induced by the relativistic spin-orbit interaction in solids provide a new opportunity to manipulate the spin-polarized electrons on the sub-picosecond time scale. Here, we report one such example in a bulk…

强关联电子 · 物理学 2018-04-11 Yuto Kinoshita , Noriaki Kida , Tatsuya Miyamoto , Manabu Kanou , Takao Sasagawa , Hiroshi Okamoto

The emergent induction of spiral magnets that was proposed [Jpn. J. Appl. Phys. 58, 120909 (2019)] and recently demonstrated [Nature 586, 232 (2020)] is shown to be further extended by a comprehensive treatment of the Rashba spin-orbit…

介观与纳米尺度物理 · 物理学 2021-03-05 Jun'ichi Ieda , Yuta Yamane

We propose a device concept, based on monolayer stanene, able to provide highly polarized spin currents (up to a $98\%$) with voltage-controlled spin polarization operating at room temperature and with small operating voltage ($0.3$ V). The…

介观与纳米尺度物理 · 物理学 2019-04-22 Enrique G. Marin , Damiano Marian , Giuseppe Iannaccone , Gianluca Fiori

Efficient manipulation of magnetic order with electric current pulses is desirable for achieving fast spintronic devices. The Rashba-Edelstein effect, wherein a spin polarization is electrically induced in noncentrosymmetric systems,…

材料科学 · 物理学 2024-07-01 Leandro Salemi , Marco Berritta , Ashis K. Nandy , Peter M. Oppeneer

Employing unbiased large-scale time-dependent density-matrix renormalization-group simulations, we demonstrate the generation of a charge-current vortex via spin injection in the Rashba system. The spin current is polarized perpendicular to…

介观与纳米尺度物理 · 物理学 2021-04-16 Florian Lange , Satoshi Ejima , Junji Fujimoto , Tomonori Shirakawa , Holger Fehske , Seiji Yunoki , Sadamichi Maekawa

Spintronics is an approach to electronics in which the spin of the electrons is exploited to control the electric resistance R of devices. One basic building block is the spin-valve, which is formed if two ferromagnetic electrodes are…

介观与纳米尺度物理 · 物理学 2016-08-16 Sangeeta Sahoo , Takis Kontos , Jürg Furer , Christian Hoffmann , Matthias Gräber , Audrey Cottet , Christian Schönenberger

The search for novel spintronic devices brings about new ways to control switching in magnetic thin-films. In this work we experimentally demonstrate a device based on thermoelectrically controlled exchange coupling. The read out signal…

材料科学 · 物理学 2013-11-27 S. Andersson , V. Korenivski

The broken inversion symmetry at the surface of a metallic film (or, more generally, at the interface between a metallic film and a different metallic or insulating material) greatly amplifies the influence of the spin-orbit interaction on…

介观与纳米尺度物理 · 物理学 2015-06-23 I. V. Tokatly , E. E. Krasovskii , G. Vignale

The generation of spin current and spin polarization in 2DEG Rashba system is considered, in which the spin-orbital coupling (SOC) is modulated by an ac gate voltage. By using non-Abelian gauge field method, we show the presence of an…

介观与纳米尺度物理 · 物理学 2020-06-18 Cong Son Ho , Mansoor B. A. Jalil , Seng Ghee Tan

Manipulating the electron spin with the aid of spin-orbit coupling (SOC) is an indispensable element of spintronics. Electrostatically gating a material with strong SOC results in an effective magnetic field which can in turn be used to…

It has recently been shown that electronic transport in zigzag graphene nanoribbons becomes spin-polarized upon application of an electric field across the nanoribbon width. However, the electric fields required to experimentally induce…

材料科学 · 物理学 2012-02-06 Bryan M. Wong , Simon H. Ye , Greg O'Bryan