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The use of the spin of the electron as the ultimate logic bit - in what has been dubbed spintronics - can lead to a novel way of thinking about information flow. At the same time single layer graphene has been the subject of intense…

介观与纳米尺度物理 · 物理学 2015-05-13 A. R. Rocha , T. B. Martins , A. Fazzio , A. J. R. da Silva

We investigate magnetic properties of the $s$ = 1/2 compound K$_{2}$Cu$_{3}$(MoO$_{4}$)$_{4}$ by combining magnetic susceptibility, magnetization, specific heat, and electron spin resonance (ESR) with density functional calculations. Its…

Novel spin transport behavior is theoretically shown to result from replacing the usual metal (or poly-silicon) gate in a silicon field-effect transistor with a ferromagnet, separated from the semiconductor by an ultra-thin oxide. The…

介观与纳米尺度物理 · 物理学 2009-11-10 J. P. McGuire , C. Ciuti , L. J. Sham

Half-metals have fully spin polarized charge carriers at the Fermi surface. Such polarization usually occurs due to strong electron--electron correlations. Recently [Phys. Rev. Lett. {\bf{119}}, 107601 (2017)], we have demonstrated…

强关联电子 · 物理学 2018-11-13 A. L. Rakhmanov , A. O. Sboychakov , K. I. Kugel , A. V. Rozhkov , Franco Nori

In antiferromagnetic spintronics, accessing the spin degree of freedom is essential for generating spin currents and manipulating magnetic order, which generally requires lifting spin degeneracy. This is typically achieved through…

介观与纳米尺度物理 · 物理学 2026-04-24 Bo Li , Ding-Fu Shao , Alexey A. Kovalev

Although the development of spintronic devices has advanced significantly over the past decade with the use of ferromagnetic materials, the extensive implementation of such devices has been limited by the notable drawbacks of these…

材料科学 · 物理学 2022-11-04 Kang Wang , Vineetha Bheemarasetty , Junhang Duan , Shiyu Zhou , Gang Xiao

Antiferromagnetic (AFM) materials have potential advantages for spintronics due to their robustness, ultrafast dynamics, and magnetotransport effects. However, the missing spontaneous polarization and magnetization hinders the efficient…

材料科学 · 物理学 2023-08-29 San-Dong Guo , Guang-Zhao Wang , Yee Sin Ang

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

Quasiperiodicity has long been known to be a potential platform to explore exotic phenomena, realizing an intricate middle point between ordered solids and disordered matter. In particular, quasiperiodic structures are promising playgrounds…

超导电性 · 物理学 2021-03-22 Maryam Khosravian , J. L. Lado

Spintronics in ferromagnetic metals is built on a complementary set of phenomena in which magnetic configurations influence transport coefficients and transport currents alter magnetic configurations. In this Letter we propose that…

介观与纳米尺度物理 · 物理学 2007-05-23 A. S. Nunez , R. A. Duine , A. H. MacDonald

Antiferromagnetic spintronics offers the potential for higher-frequency operations and improved insensitivity to magnetic fields compared to ferromagnetic spintronics. However, previous electrical techniques to detect antiferromagnetic…

We consider the antiferromagnetic spin-1/2 $XXZ$ Heisenberg model on a frustrated diamond-chain lattice in a $z$- or $x$-aligned external magnetic field. We use the strong-coupling approach to elaborate an effective description in the…

强关联电子 · 物理学 2015-02-17 Johannes Richter , Olesia Krupnitska , Taras Krokhmalskii , Oleg Derzhko

We investigate the electronic and magnetic properties of graphene channels ($2$--$4$~nm wide) embedded within fluorographene, focusing on two distinct interfaces: the fully fluorinated $\alpha$ interface and the half-fluorinated $\beta$…

介观与纳米尺度物理 · 物理学 2024-10-01 R. M. Guzmán-Arellano , A. D. Hernández-Nieves , F. M. Peeters , Gonzalo Usaj

We report the direct measurement of antiferromagnetic spin polarization at the oxygen sites in the multiferroic TbMn2O5, through resonant soft x-ray magnetic scattering. This supports recent theoretical models suggesting that the oxygen…

Altermagnets offer a unique pathway to functional spintronics by combining vanishing magnetization with large spin splitting. Here, we demonstrate that the canonical d-wave altermagnet KV2Se2O can deliver giant tunneling magnetoresistance…

材料科学 · 物理学 2026-02-26 Bin Liu , Pei-Hao Fu , Yu-Xuan Sun , Xiao-Lin Zhang , Si-Cong Zhu , Xiang-Long Yu , Hua Wu , Yuan-Zhi Shao

Unlike the two-terminal device, in which the time-reversal invariant spin-orbit interaction alone cannot polarize the spins, such a polarization can be generated when electrons from one source reservoir flow into two (or more) separate…

介观与纳米尺度物理 · 物理学 2017-02-21 Shlomi Matityahu , Amnon Aharony , Ora Entin-Wohlman , Carlos A. Balseiro

Altermagnetic (AM) materials have recently attracted significant interest due to the non-relativistic momentum-dependent spin splitting of their electronic band structure which may be useful for antiferromagnetic (AFM) spintronics. So far,…

材料科学 · 物理学 2024-09-04 Kartik Samanta , Ding-Fu Shao , Evgeny Y. Tsymbal

Spintronics is expected as the next-generation technology based on the novel notch of spin degree of freedom of electrons. Half metals, a class of materials which behave as a metal in one spin direction and an insulator in the opposite spin…

材料科学 · 物理学 2011-08-19 Xiao HU

An approach is proposed for evaluating dipolar and multipolar inter-site interactions in strongly correlated materials. This approach is based on the single-site dynamical mean-field theory (DMFT) in conjunction with the atomic…

强关联电子 · 物理学 2016-09-13 L. V. Pourovskii

By using non-equilibrium Green's function (NEGF) method and tight-binding (TB) approximation, we investigated a perfect control on spin transport in a zigzag $\alpha^{\prime}$-boron nanoribbon ($\alpha^{\prime}$-BNR) as the must…

介观与纳米尺度物理 · 物理学 2022-10-17 Zahra Askarpour , Mohsen Farokhnezhad , Fahimeh norouzi , Mahdi Esmaeilzadeh