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相关论文: Spin-valley locking in Kekul\'e-distorted graphene…

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Aiming to understand the main spin relaxation mechanism in graphene, we investigate the spin relaxation with random Rashba field induced by both adatoms and substrate, by means of the kinetic spin Bloch equation approach. The charged…

介观与纳米尺度物理 · 物理学 2012-03-13 P. Zhang , M. W. Wu

We introduce a generalized Hamiltonian describing not only all topological phases observed experimentally in Kekul\'e graphene (KekGr) but predicting also new ones. These phases show features like a quadratic band crossing point, valley…

介观与纳米尺度物理 · 物理学 2021-11-12 Santiago Galván y García , Thomas Stegmann , Yonatan Betancur-Ocampo

Understanding spin physics in graphene is crucial for developing future two-dimensional spintronic devices. Recent studies show that efficient spin-to-charge conversions via either the inverse spin Hall effect or the inverse…

介观与纳米尺度物理 · 物理学 2022-01-05 C. K. Safeer , Franz Herling , Won Young Choi , Nerea Ontoso , Josep Ingla-Aynés , Luis E. Hueso , Fèlix Casanova

Ferroelectric Rashba semiconductors (FERSC) have recently emerged as a promising class of spintronics materials. The peculiar coupling between spin and polar degrees of freedom responsible for several exceptional properties, including…

材料科学 · 物理学 2019-07-10 H. Wang , P. Gopal , S. Picozzi , S. Curtarolo , M. Buongiorno Nardelli , J. Slawinska

We investigate the transport properties of a graphene layer in the presence of Rashba spin-orbit interaction. Quite generally, spin-orbit interactions induce spin splittings and modifications of the graphene bandstructure. We calculate…

介观与纳米尺度物理 · 物理学 2014-12-05 M. I. Alomar , David Sanchez

The exquisite distortion in a Kekul\'e-Y (Kek-Y) superlattice merges the two inequivalent Dirac cones (from the $K$- and the $K^\prime$- points) into the highest symmetric $\Gamma$-point in the hexagonal Brillouin zone. Here we report that…

介观与纳米尺度物理 · 物理学 2024-10-08 Sushmita Saha , Alestin Mawrie

Spintronics, or spin electronics, is aimed at efficient control and manipulation of spin degrees of freedom in electron systems. To comply with demands of nowaday spintronics, the studies of electron systems hosting giant spin-orbit-split…

材料科学 · 物理学 2014-11-05 S. V. Eremeev , I. A. Nechaev , P. M. Echenique , E. V. Chulkov

Magnetic proximity effects in Co/hBN/graphene heterostructures are systematically analyzed via first-principles calculations, demonstrating a pronounced localized spatial variation of the induced spin polarization of graphene's Dirac…

介观与纳米尺度物理 · 物理学 2026-01-13 Klaus Zollner , Lukas Cvitkovich , Riccardo Silvioli , Andreas V. Stier , Jaroslav Fabian

Theory of Rashba spin-orbit coupling in magnetic metals is worked out from microscopic Hamiltonian describing d-orbitals. When structural inversion symmetry is broken, electron hopping between $d$-orbitals generates chiral ordering of…

介观与纳米尺度物理 · 物理学 2013-01-07 Jin-Hong Park , Choong H. Kim , Hyun-Woo Lee , Jung Hoon Han

We study the effects of Rashba spin-orbit coupling on the spin torque induced by spin waves, which are the plane wave dynamics of magnetization. The spin torque is derived from linear response theory, and we calculate the dynamic spin…

材料科学 · 物理学 2015-12-21 Nobuyuki Umetsu , Daisuke Miura , Akimasa Sakuma

Using the Kubo formalism, the magnetic properties of the system in the linear regime have been investigated. Mainly the effect of non-magnetic substrate on the spin susceptibility is calculated. Results show that the Rashba coupling…

介观与纳米尺度物理 · 物理学 2015-07-20 Fatemeh Delkhosh , A. Phirouznia

We theoretically study electronic transport through a region with inhomogeneous Rashba spin-orbit (RSO) coupling placed between two normal regions in a monolayer graphene. The inhomogeneous RSO region is characterized by linearly varying…

介观与纳米尺度物理 · 物理学 2016-01-21 Leila Razzaghi , Mir Vahid Hosseini

In this work we have investigated the effect of Rashba splitting on the RKKY interaction in TI thin film both at finite and zero chemical potential. We find that the spin susceptibility of Rashba materials including TI thin film is strongly…

介观与纳米尺度物理 · 物理学 2017-07-14 Mahroo Shiranzaei , Fariborz Parhizgar , Hosein Cheraghchi

In this study, the Optical conductivity of substitutionary doped graphene is investigated in presence of the Rashba spin orbit coupling (RSOC). Calculations have been performed within the coherent potential approximation (CPA) beyond the…

介观与纳米尺度物理 · 物理学 2020-03-18 S. S. Sadeghi , A. Phirouznia , V. Fallahi

By means of density functional theory based calculations, we study the role of spin-orbit coupling in the new family of ABC hyperferroelectrics [Phys. Rev. Lett. 112, 127601 (2014)]. We unveil an extremely rich physics strongly linked to…

We demonstrate that the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in graphene can be strongly modified by a time-periodic driving field even in the weak drive regime. This effect is due to the opening of a dynamical band gap at the…

介观与纳米尺度物理 · 物理学 2020-08-19 Modi Ke , Mahmoud M. Asmar , Wang-Kong Tse

Spin-orbit coupling (SOC) combined with broken inversion symmetry play key roles in inducing Rashba effect. The combined spontaneous polarization and Rashba effect enable controlling a material's spin degrees of freedom electrically. In…

材料科学 · 物理学 2023-05-09 Amreen Bano , Dan Thomas Major

We study theoretically the quantum transport properties of the Dirac fermions with spin-orbit interactions (SOIs) in graphene by using the method of Schwinger proper time together with decomposition over Landau level poles and Kubo formula.…

介观与纳米尺度物理 · 物理学 2008-08-09 Kai-He Ding , Guanghui Zhou , Zhen-Gang Zhu

We study the Ruderman-Kittle-Kasuya-Yosida (RKKY) interaction in the presence of spin polarized two dimensional Dirac fermions. We show that a spin polarization along the z-axis mediates an anisotropic interaction which corresponds to a XXZ…

介观与纳米尺度物理 · 物理学 2015-06-12 F. Parhizgar , Reza Asgari , S. H. Abedinpour , M. Zareyan

In this work, we explore the strain and curvature effects on the electronic properties of a curved graphene structure, called the graphene wormhole. The electron dynamics is described by a massless Dirac fermion containing…

介观与纳米尺度物理 · 物理学 2024-09-13 J. E. G. Silva , Ö. Yeşiltaş , J. Furtado , A. A. Araújo Filho