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All-electric devices for the generation and filtering of spin currents are of crucial importance for spintronics experiments and applications. Here we consider a quantum dot between two metallic leads in the presence of spin-orbit coupling,…

介观与纳米尺度物理 · 物理学 2011-06-08 Valentina Brosco , Markus Jerger , Pablo San-Jose , Gergely Zarand , Alexander Shnirman , Gerd Schön

We demonstrate a scalable new ferromagnetic resonance (FMR) technique based on the spin-orbit interaction. An alternating current drives FMR in uniform ferromagnetic structures patterned from the dilute magnetic semiconductors (Ga,Mn)As and…

介观与纳米尺度物理 · 物理学 2015-05-20 D. Fang , H. Kurebayashi , J. Wunderlich , K. Vyborny , L. P. Zarbo , R. P. Campion , A. Casiraghi , B. L. Gallagher , T. Jungwirth , A. J. Ferguson

A proposal of a spin separator based on the spin Zeeman effect in Y-shaped nanostructure with a quantum point contact is presented. Our calculations show that the appropriate tuning of the quantum point contact potential and the external…

介观与纳米尺度物理 · 物理学 2014-06-12 P. Wojcik , M. Woloszyn , B. J. Spisak , J. Adamowski

We propose a spin-mechanical device to control and detect spin currents by mechanical torque. Our hybrid nano-electro-mechanical device, which contains a nanowire with a ferromagnetic-nonmagnetic interface, is designed to measure or induce…

介观与纳米尺度物理 · 物理学 2009-11-11 P. Mohanty , G. Zolfagharkhani , S. Kettemann , P. Fulde

Spin torque and spin Hall effect nanooscillators generate high intensity spin wave auto oscillations on the nanoscale enabling novel microwave applications in spintronics, magnonics, and neuromorphic computing. For their operation, these…

介观与纳米尺度物理 · 物理学 2019-06-19 M. Haidar , A. A. Awad , M. Dvornik , R. Khymyn , A. Houshang , J. Akerman

Spintronics, a transformative field of research, leverages the spin of electron to revolutionize electronic devices, offering significant advantages over traditional charge-based systems. This chapter highlights the critical role of novel…

材料科学 · 物理学 2025-02-03 A. Sud , A. Kumar , M. Cubukcu

Impressive advances in the field of molecular spintronics allow one to study electron transport through individual magnetic molecules embedded between metallic leads in the purely quantum regime of single electron tunneling. Besides…

强关联电子 · 物理学 2019-09-05 Alessandro Chiesa , Emilio Macaluso , Paolo Santini , Stefano Carretta , Eva Pavarini

Magnetic skyrmions, topologically protected vortex-like configurations in spin textures, are of wide conceptual and practical appeal for quantum information technologies, notably in relation to the making of so-called race-track memory…

介观与纳米尺度物理 · 物理学 2019-09-04 Emil Viñas Boström , Claudio Verdozzi

The coherent spin-polarized electron transport through a zigzag-edge graphene flake (ZGF), sandwiched between two semi-infinite armchair graphene nanoribbons, is investigated by means of Landauer-Buttiker formalism. To study the edge…

介观与纳米尺度物理 · 物理学 2015-05-27 A. Saffarzadeh , R. Farghadan

Spin-1/2 electrons are scattered through one or two diamond-like loops, made of quantum dots connected by one-dimensional wires, and subject to both an Aharonov-Bohm flux and (Rashba and Dresselhaus) spin-orbit interactions. With some…

介观与纳米尺度物理 · 物理学 2015-05-27 Amnon Aharony , Yasuhiro Tokura , Guy Z. Cohen , Ora Entin-Wohlman , Shingo Katsumoto

We investigate the spin transport through strongly anisotropic noncollinear magnetic molecules and find that the noncollinear magnetization acts as a spin-switching device for the current. Moreover, spin currents are shown to offer a viable…

介观与纳米尺度物理 · 物理学 2013-05-29 Alessandro Soncini , Liviu F. Chibotaru

We design spin filters for particles with potentially arbitrary spin S (= 1/2, 1, 3/2,....) using a one-dimensional periodic chain of magnetic atoms as a quantum device. Describing the system within a tight-binding formalism we present an…

介观与纳米尺度物理 · 物理学 2016-08-02 Biplab Pal , Rudolf A. Römer , Arunava Chakrabarti

Junctions composed of two crossed graphene nanoribbons (GNRs) have been theoretically proposed as electron beam splitters where incoming electron waves in one GNR can be split coherently into propagating waves in \emph{two} outgoing…

介观与纳米尺度物理 · 物理学 2022-07-13 Sofia Sanz , Nick Papior , Géza Giedke , Daniel Sánchez-Portal , Mads Brandbyge , Thomas Frederiksen

We propose a setup which allows to couple the electron spin degree of freedom to the mechanical motions of a nanomechanical system not involving any of the ferromagnetic components. The proposed method employs the strain induced spin-orbit…

介观与纳米尺度物理 · 物理学 2007-05-23 A. G. Mal'shukov , C. S. Tang , C. S. Chu , K. A. Chao

The understanding and calculation of spin transport are essential elements for the development of spintronics devices. Here, we propose a simple method to calculate analytically the spin accumulations, spin currents and magnetoresistances…

介观与纳米尺度物理 · 物理学 2015-06-09 W. Savero Torres , A. Marty , P. Laczkowski , L. Vila , M. Jamet , J-P. Attané

Magnetically ordered, electrically insulating materials pave the way towards novel spintronic devices. In these materials the flow of magnetic excitations such as magnons results in pure spin currents. These spin currents can be driven by…

应用物理 · 物理学 2017-12-25 Matthias Althammer , Sebastian T. B. Goennenwein , Rudolf Gross

Two types of spintronic devices on the base of magnetic nanostructures containing silicon dioxide films with cobalt nanoparticles SiO2(Co) on GaAs substrate - magnetic sensors and field-effect transistor governed by applied magnetic field -…

介观与纳米尺度物理 · 物理学 2011-12-09 L. V. Lutsev , A. I. Stognij , N. N. Novitskii , A. S. Shulenkov

On-chip micromagnets enable electrically controlled quantum gates on electron spin qubits. Extending the concept to a large number of qubits is challenging in terms of providing large enough driving gradients and individual addressability.…

介观与纳米尺度物理 · 物理学 2023-04-12 Michele Aldeghi , Rolf Allenspach , Gian Salis

A device enabling mechanically-controlled spin and electric transport in mesoscopic structures is proposed. It is based on the transfer of electrons through weak links formed by suspended nanowires, on which the charge carriers experience a…

介观与纳米尺度物理 · 物理学 2014-07-09 R. I. Shekhter , O. Entin-Wohlman , A. Aharony

Altermagnets, a recently identified class of magnetic materials, possess a spin-split Fermi surface that results in the so-called spin splitter effect, enabling the generation of a spin current transverse to the injection direction and…

介观与纳米尺度物理 · 物理学 2025-04-17 Konstantinos Sourounis , Aurélien Manchon