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We consider graphene on monolayer WSe$_2$ and the spin-orbit coupling induced by the transition-metal dichalcogenide substrate for application to spin-active devices. We study quantum dots and graphene quantum rings as tunable spin filters…

Mesoscale and Nanoscale Physics · Physics 2018-07-27 Alina Mrenca-Kolasinska , Bartlomiej Rzeszotarski , Bartlomiej Szafran

We theoretically study graphene nanoribbons in the presence of spatially varying magnetic fields produced e.g. by nanomagnets. We show both analytically and numerically that an exceptionally large Rashba spin orbit interaction (SOI) of the…

Mesoscale and Nanoscale Physics · Physics 2013-02-04 Jelena Klinovaja , Daniel Loss

In a recent paper [Phys. Rev. Lett. 101, 106601], I. V. Tokatly addresses a non Abelian formulation of spin orbit interaction in condensed matter, restricting to a gauge symmetric scenario. In this comment we draw attention on the relevance…

Mesoscale and Nanoscale Physics · Physics 2016-08-14 Alexander López , Ernesto Medina , Nelson Bolívar , Bertrand Berche

We have mapped the Dirac point in exfoliated monolayer and bilayer graphene using spatially resolved scanning tunneling spectroscopy (STS) measurements at low temperature. The Dirac point shifts in energy at different locations in graphene.…

Mesoscale and Nanoscale Physics · Physics 2011-02-02 A. Deshpande , W. Bao , Z. Zhao , C. N. Lau , B. J. LeRoy

van der Waals heterostructures assembled from atomically thin crystals are ideal model systems to study spin-orbital coupled transport because they exhibit a strong interplay between spin, lattice and valley degrees of freedom that can be…

Mesoscale and Nanoscale Physics · Physics 2021-08-18 Carmen Monaco , Aires Ferreira , Roberto Raimondi

Graphene is an ideal platform to study many-body effects due to its semimetallic character and the possibility to dope it over a wide range. Here we study the width of graphene's occupied $\pi$-band as a function of doping using…

Strongly Correlated Electrons · Physics 2016-08-10 Søren Ulstrup , Malte Schüler , Marco Bianchi , Felix Fromm , Christian Raidel , Thomas Seyller , Tim Wehling , Philip Hofmann

The intertwining relations between superpartner Hamiltonians are the main ingredients of well known Supersymmetrical Quantum Mechanics (SUSY QM). In the present paper, the generalized form of intertwining is used for investigation of a…

Mesoscale and Nanoscale Physics · Physics 2019-09-17 M. V. Ioffe , D. N. Nishnianidze , E. V. Prokhvatilov

The different physical properties of multilayered graphene or graphite relative to single layer graphene result from the Dirac spins symmetry in graphene and the Pauli spin symmetry in graphite. The Dirac symmetry in multilayers of graphene…

Materials Science · Physics 2011-10-28 Reginald B. Little , Glenn J. Gex , Muhammad Ansari , James W. Mitchell

In graphene, we report the first theoretical demonstration of how the intrinsic spin orbit interaction can be deduced from the theory and how it can be controlled by tuning a uniform magnetic field, and/or by changing the strength of a long…

Mesoscale and Nanoscale Physics · Physics 2019-07-09 B. S. Kandemir

The paper presents the author view on spin-rooted properties of graphene supported by numerous experimental and calculation evidences. Dirac fermions of crystalline graphene and local spins of graphene molecules are suggested to meet a…

Materials Science · Physics 2016-12-28 Elena F. Sheka

Noncommutative geometric construction of gravity in the two sheeted spacetime can be viewed as a discretized version of a Kaluza-Klein theory. In this paper, we show that it is possible to incorporate the nonabelian gauge fields in the same…

General Relativity and Quantum Cosmology · Physics 2020-09-25 Viet Ai Nguyen , Du Tien Pham

The effect of Rashba spin-orbit interaction and anisotropic strain on the electronic, optical and thermodynamic properties of artificial graphene-like superlattice composed of InAs-GaAs quantum dots has been considered theoretically. The…

Mesoscale and Nanoscale Physics · Physics 2019-11-27 Vram Mughnetsyan , Aram Manaselyan , Manuk Barseghyan , Albert Kirakosyan , David Laroze

We consider two ways of introducing minimal Abelian gauge interactions into the model presented in [1]. They are different only if the second central charge of the planar Galilei group is nonzero. One way leads to standard gauge…

High Energy Physics - Theory · Physics 2009-11-07 J. Lukierski , P. C. Stichel , W. J. Zakrzewski

We investigate the effect that the intrinsic spin-orbit and the inter- and intra-layer Rashba interactions have on the energy spectrum of either an unbiased or a biased graphene bilayer. We find that under certain conditions, a Dirac cone…

Mesoscale and Nanoscale Physics · Physics 2010-04-01 Ralph van Gelderen , C. Morais Smith

We study the pseudo spin-orbital (SO) effects experienced by massive Dirac particles in graphene, which can potentially be of a larger magnitude compared to the conventional Rashba SO effects experienced by particles in a 2DEG semiconductor…

Mesoscale and Nanoscale Physics · Physics 2012-02-21 S. G. Tan , M. B. A. Jalil , Dax Enshan Koh , Hwee Kuan Lee , Y. H. Wu

A beam of linearly polarized light transmitted through magnetically biased graphene can have its axis of polarization rotated by several degrees after passing the graphene sheet. This large Faraday effect is due to the action of the…

Materials Science · Physics 2016-07-06 Jürgen Schiefele , Luis Martin-Moreno , Francisco Guinea

We theoretically investigate the nonlinear response of bent graphene, in the presence of artificially-enhanced spin-orbit coupling, which can occur either via adatom deposition, or by placing the sheet of bent graphene in contact with a…

Mesoscale and Nanoscale Physics · Physics 2022-11-09 Arttu Nieminen , Marco Ornigotti

We use both continuum and lattice models to study the energy-momentum dispersion and the dynamics of a wave packet for an electron moving in graphene in the presence of spin-orbit couplings and either a single potential barrier or a…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Ranjani Seshadri , Diptiman Sen

Twisted bilayer graphene is an excellent example of highly correlated system demonstrating a nearly flat electron band, the Mott transition and probably a spin liquid state. Besides the one-electron picture, analysis of Dirac points is…

Strongly Correlated Electrons · Physics 2018-06-28 V. Yu. Irkhin , Yu. N. Skryabin

Proximity effects are one of the pillars of exotic phenomena and technological applications of two dimensional materials. However, the interactions nature depends strongly on the materials involved, their crystalline symmetries, and…

Mesoscale and Nanoscale Physics · Physics 2022-01-11 Armando Pezo , Zeila Zanolli , Nils Wittemeier , Pablo Ordejon , Adalberto Fazzio , Stephan Roche , Jose H. Garcia