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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

Quantum spins, referred to the spin operator preserved by full SU(2) symmetry in the absence of the magnetic anistropy, have been proposed to host exotic interactions with superconductivity4. However, spin orbit coupling and crystal field…

The entanglement in one-dimensional random XY spin systems where the impurities of exchange couplings and the external magnetic fields are considered as random variables is investigated by solving the different spin-spin correlation…

Quantum Physics · Physics 2009-11-13 C. J. Shan , W. W. Cheng , T. K. Liu , Y. X. Huang , H. Li

Density functional calculations are performed to study the magnetic order of the severely distorted square planar cupric oxide (CuO) and local spin disorder in it in the presence of the transition metal impurities M (= Cr, Mn, Fe, Co and…

Strongly Correlated Electrons · Physics 2017-04-05 B. G. Ganga , P. N. Santhosh , B. R. K. Nanda

The tunable band structure and nontrivial topology of multilayer rhombohedral graphene lead to a variety of correlated electronic states with isospin orders-meaning ordered states in the combined spin and valley degrees of freedom-dictated…

The effective interaction between magnetic impurities in metals that can lead to various magnetic ground states often competes with a tendency for electrons near impurities to screen the local moment (Kondo effect). The simplest system…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 N. J. Craig , J. M. Taylor , E. A. Lester , C. M. Marcus , M. P. Hanson , A. C. Gossard

The effects of intrinsic spin-orbit and Coulomb interactions on low-energy properties of finite width graphene armchair ribbons are studied by means of a Dirac Hamiltonian. It is shown that metallic states subsist in the presence of…

Strongly Correlated Electrons · Physics 2012-02-01 Mahdi Zarea , Nancy Sandler

We investigate the effect of edge defects (vacancies) and impurities (substitutional dopants) on the robustness of spin-polarization in graphene nanoribbons (GNRs) with zigzag edges, using density-functional-theory calculations. We found…

Materials Science · Physics 2009-11-13 Bing Huang , Feng Liu , Jian Wu , Bing-Lin Gu , Wenhui Duan

We address the nature and possible observable consequences of singular one-electron states that appear when strong defects are introduced in the metallic family of graphene, namely, metallic carbon nanotubes and nanotori. In its simplest…

Mesoscale and Nanoscale Physics · Physics 2014-06-04 H. Santos , David Soriano , J. J. Palacios

Large spin-orbital proximity effects have been predicted in graphene interfaced with a transition metal dichalcogenide layer. Whereas clear evidence for an enhanced spin-orbit coupling has been found at large carrier densities, the type of…

Spin-orbit coupling (SOC) can provide essential tools to manipulate electron spins in two-dimensional materials like graphene, which is of great interest for both fundamental physics and spintronics application. In this paper, we report the…

Mesoscale and Nanoscale Physics · Physics 2021-10-12 Shimin Cao , Chuanwu Cao , Shibing Tian , Jian-Hao Chen

The electronic properties of low-dimensional materials can be engineered by doping, but in the case of graphene nanoribbons (GNR) the proximity of two symmetry-breaking edges introduces an additional dependence on the location of an…

Mesoscale and Nanoscale Physics · Physics 2010-10-05 S. R. Power , V. M. de Menezes , S. B. Fagan , M. S. Ferreira

Inclusion of spin-dependent interactions in graphene in the vicinity of the Dirac points can be posed in terms of non-Abelian gauge potentials. Such gauge potentials being surrogates of physical electric fields and material parameters, only…

Mesoscale and Nanoscale Physics · Physics 2015-09-04 Bertrand Berche , Nelson Bolí var , Alexander López , Ernesto Medina

In this study, we investigate the isolated magnetic interactions between two identical Fe atoms divacantly-substituted into graphene. Using density functional theory, we simulated the electronic and magnetic properties for a supercell of…

Strongly Correlated Electrons · Physics 2019-10-02 R. Putnam , A. V. Balatsky , J. T. Haraldsen

The Hamiltonian for nanocones with curvature induced spin orbit coupling have been derived. The effect of curvature induced spin orbit coupling on the electronic properties of graphitic nanocones is considered. Energy spectra for different…

Mesoscale and Nanoscale Physics · Physics 2015-11-10 R. Pincak , J. Smotlacha , M. Pudlak

We propose encapsulating type-A antiferromagnetic semiconductors between graphene layers to realize a gate-tunable synthetic antiferromagnet with nonrelativistic spin splitting, enabling efficient spintronic transport via graphene. Ab…

Mesoscale and Nanoscale Physics · Physics 2026-03-24 Marko Milivojević , Martin Gmitra

Spin-mechanical coupling is vital in diverse fields including spintronics, sensing and quantum transduction. Two-dimensional (2D) magnetic materials provide a unique platform for investigating spin-mechanical coupling, attributed to their…

Mesoscale and Nanoscale Physics · Physics 2024-08-07 Fan Fei , Yulu Mao , Wuzhang Fang , Wenhao Liu , Jack P. Rollins , Aswin L. N. Kondusamy , Bing Lv , Yuan Ping , Ying Wang , Jun Xiao

Indirect exchange interaction between magnetic impurities in one dimensional systems is a matter of long discussions since Kittel has established that in the asymptotic limit it decays as the inverse of distance x between the impurities. In…

Mesoscale and Nanoscale Physics · Physics 2019-03-29 Joelson F. Silva , E. Vernek

Exchange bias is a unidirectional magnetic anisotropy that often arise from interfacial interaction of a ferromagnetic and antiferromagnetic layers. In this article, we show that a metallic layer with spin-orbit coupling can induces an…

Mesoscale and Nanoscale Physics · Physics 2024-11-26 Adam B. Cahaya , Ansell Alvarez Anderson , Anugrah Azhar , Muhammad Aziz Majidi

We introduce a spin-orbit coupling scheme, where a retro-reflected laser beam selectively diffracts two spin components in opposite directions. Spin sensitivity is provided by sweeping through a magnetic-field sensitive transition while…

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