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We investigate a novel way to manipulate the spin polarized transmission in a two terminal zigzag graphene nanoribbon in presence of Rashba spin-orbit (SO) interaction with circular shaped cavity engraved into it. A usual technique to…

Mesoscale and Nanoscale Physics · Physics 2018-12-13 Sudin Ganguly , Saurabh Basu , Santanu K. Maiti

We use a combination of experimental techniques to demonstrate a general occurrence of spin-orbit interaction (SOI) in graphene on transition metal dichalcogenide (TMD) substrates. Our measurements indicate that SOI is ultra-strong and…

Mesoscale and Nanoscale Physics · Physics 2016-11-02 Zhe Wang , Dong-Keun Ki , Jun Yong Khoo , Diego Mauro , Helmuth Berger , Leonid S. Levitov , Alberto F. Morpurgo

Silicene is a buckled monolayer of silicon. Its electronic properties are distinct from both the conventional two dimensional electron gas and the famous graphene due to strong spin orbit interaction and the buckled structure. Silicene has…

Mesoscale and Nanoscale Physics · Physics 2013-01-10 M. Tahir , U. Schwingenschlogl

The lack of some spatial symmetries in planar devices with Rashba spin-orbit interaction opens the possibility of producing spin polarized electrical currents in absence of external magnetic field or magnetic impurities. We study how the…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 Leonor Chico , A. Latgé , Luis Brey

The ability to control heat transport with electrical signals has been an outstanding challenge due to the lack of efficient electrothermal materials. Previous attempts have mainly concentrated on phase-change and layered materials and…

We present a theoretical study of spin-velocity injection (SVI) of a pure spin current (PSC) induced by a linearly polarized light that impinges normally on the surface of two 50\% hydrogenated noncentrosymmetric two-dimensional (2D)…

Mesoscale and Nanoscale Physics · Physics 2017-11-15 Reinaldo Zapata-Peña , Bernardo S. Mendoza , Anatoli I. Shkrebtii

In spintronics, the ability to transport magnetic information often depends on the existence of a spin current traveling between two different magnetic objects acting as source and probe. A large fraction of this information never reaches…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 F. S. M. Guimarães , A. T. Costa , R. B. Muniz , M. S. Ferreira

Atomically thin two-dimensional layer of honeycomb crystalline carbon known as graphene is a promising system for electronics. It has a point-like Fermi surface, which is very sensitive to external potentials. In particular, Zeeman magnetic…

Mesoscale and Nanoscale Physics · Physics 2014-11-18 M. Khodas , I. A. Zaliznyak , D. E. Kharzeev

Coupling graphene's excellent electron and spin transport properties with higher spin-orbit coupling material allows tackling the hurdle of spin manipulation in graphene, due to the proximity to van-der-Waals layers. Here we use magneto…

Mesoscale and Nanoscale Physics · Physics 2022-03-08 Chithra H. Sharma , Pai Zhao , Lars Tiemann , Marta Prada , Arti Dangwal Pandey , Andreas Stierle , Robert. H. Blick

We analyze the origin of spin-orbit coupling (SOC) in fluorinated graphene using Density Functional Theory (DFT) and a tight-binding model for the relevant orbitals. As it turns out, the dominant source of SOC is the atomic spin-orbit of…

Mesoscale and Nanoscale Physics · Physics 2016-03-16 R. M. Guzmán-Arellano , A. D. Hernández-Nieves , C. A. Balseiro , Gonzalo Usaj

A semi-classical description of the intrinsic spin-Hall effect (SHE) is presented which is relevant for a wide class of systems. A heuristic model for the SHE is developed, starting with a fully quantum mechanical treatment, from which we…

Mesoscale and Nanoscale Physics · Physics 2010-05-28 T. Fujita , M. B. A. Jalil , S. G. Tan

Driving non-superconducting materials into a superconducting state through specific modulation is a key focus in the field of superconductivity. Pressure is a powerful method that can switch a three-dimensional (3D) material between…

Superconductivity · Physics 2026-01-06 Tian Yan , Ru Zheng , Jin-Hua Sun , Fengjie Ma , Xun-Wang Yan , Miao Gao , Tian Cui , Zhong-Yi Lu

Electrical tunability of spin polarization has been a focus in spintronics. Here, we report that the trigonal warping (TW) effect, together with spin-orbit coupling (SOC), can lead to two distinct magnetoelectric effects in low-dimensional…

Materials Science · Physics 2018-02-14 Da-Shuai Ma , Zhi-Ming Yu , Hui Pan , Yugui Yao

The induced-proximity effects of nearly commensurate lattice structure of a graphene layer on Ni(111) and Co(0001) substrates in the AC stacking configuration are addressed through an analytical tight-binding approach within the…

Mesoscale and Nanoscale Physics · Physics 2019-06-05 Mayra Peralta , Ernesto Medina , Francisco Mireles

Topological insulators (TIs) are emerging materials for next-generation low-power nanoelectronic and spintronic device applications. TIs possess non-trivial spin-momentum locking features in the topological surface states in addition to the…

Mesoscale and Nanoscale Physics · Physics 2024-10-11 Anamul Md. Hoque , Lars Sjöström , Dmitrii Khokhriakov , Bing Zhao , Saroj P. Dash

The Rashba-Edelstein effect (REE), which generates interfacial spin polarization and subsequent spin current, is a compelling spin-charge conversion mechanism for spintronics applications, since it is not limited by the elemental spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2023-12-13 Jing Li , Andrew H. Comstock , Aeron McConnell , Dali Sun , Xiaoshan Xu

We report the spin to charge current conversation in an intrinsic topological insulator (TI) $(Bi_{0.22}Sb_{0.78})_2Te_3$ film at room temperature. The spin currents are generated in a thin layer of permalloy (Py) by two different…

Mesoscale and Nanoscale Physics · Physics 2017-12-06 J. B. S. Mendes , O. Alves-Santos , J. Holanda , R. P. Loreto , C. I. L. de Araujo , Cui-Zu Chang , J. S. Moodera , A. Azevedo , S. M. Rezende

Graphene nanoribbons (GNRs) have been proposed as potential building blocks for field effect transistor (FET) devices due to their quantum confinement bandgap. Here, we propose a novel GNR device concept, enabling the control of both charge…

Mesoscale and Nanoscale Physics · Physics 2017-03-03 Peter Vancso , Imre Hagymasi , Levente Tapaszto

We theoretically investigate spin transport at the interface between the ferromagnetic insulator(FI) and a superconductor(SC). Considering a simple FI-SC interface model, we derive formulas for the spin current and spin-current noise…

Mesoscale and Nanoscale Physics · Physics 2019-04-24 T. Kato , Y. Ohnuma , M. Matsuo , J. Rech , T. Jonckheere , T. Martin

The spin polarization induced by the spin Hall effect (SHE) in thin films typically points out of the plane. This is rooted on the specific symmetries of traditionally studied systems, not in a fundamental constraint. Recently, experiments…

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