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Related papers: Band-structure topologies of graphene: spin-orbit …

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Using ab-initio methods, we show that the uniform deformation either leaves graphene (semi)metallic or opens up a small gap yet only beyond the mechanical breaking point of the graphene, contrary to claims in the literature based on…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 I. I. Naumov , A. M. Bratkovsky

We show that intervalley coupling can be induced in twisted bilayer graphene (TBG) by aligning the bottom graphene layer with either of two types of commensurate insulating triangular Bravais lattice substrate. The intervalley coupling…

Mesoscale and Nanoscale Physics · Physics 2026-04-07 Bo-Ting Chen , Michael G. Scheer , Biao Lian

We determine the band structure of graphene under strain using density functional calculations. The ab-initio band strucure is then used to extract the best fit to the tight-binding hopping parameters used in a recent microscopic model of…

Mesoscale and Nanoscale Physics · Physics 2009-11-08 R. M. Ribeiro , Vitor M. Pereira , N. M. R. Peres , P. R. Briddon , A. H. Castro Neto

Diverse emergent correlated electron phenomena have been observed in twisted graphene layers due to electronic interactions with the moir\'e superlattice potential. Many electronic structure predictions have been reported exploring this new…

Mesoscale and Nanoscale Physics · Physics 2023-06-29 J. E. Nunn , A. McEllistrim , A. Weston , A. Garcia-Ruiz , M. D. Watson , M. Mucha-Kruczynski , C. Cacho , R. Gorbachev , V. I. Fal'ko , N. R. Wilson

We study the electronic structure of graphene with a single substitutional vacancy using a combination of the density-functional, tight-binding, and impurity Green's function approaches. Density functional studies are performed with the…

Mesoscale and Nanoscale Physics · Physics 2012-08-09 B. R. K. Nanda , M. Sherafati , Z. Popović , S. Satpathy

We investigate the effect of electron- $\mathrm{A}_{1g}$ phonon coupling on the gapless electronic band dispersion of the pristine graphene. The electron-phonon interaction is introduced through a Kekul\'{e}-type distortion giving rise to…

Mesoscale and Nanoscale Physics · Physics 2013-10-29 B. S. Kandemir , A. Mogulkoc

The naturally weak spin-orbit coupling in Graphene can be largely enhanced by adatom deposition (e.g. Weeks et al. Phys. Rev. X 1, 021001 (2011)). However, the dynamics of the adatoms also induces a coupling between phonons and the electron…

Mesoscale and Nanoscale Physics · Physics 2015-07-29 Jhih-Shih You , Daw-Wei Wang , Miguel A. Cazalilla

Chirality is one of the key features governing the electronic properties of single- and bilayer graphene: the basics of this concept and its consequences on transport are presented in this review. By breaking the inversion symmetry, a band…

We study theoretically the effect of spin-orbit coupling and sublattice asymmetry in graphene on the spin polarization of photoelectrons. We show that sublattice asymmetry in graphene not only opens a gap in the band structure but in case…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Peter Rakyta , Andor Kormanyos , Jozsef Cserti

We introduce a $p_{z}-d$ coupling model Hamiltonian for the $\pi$-graphene/Au bands that predicts a rather large intrinsic spin-orbit (SO) coupling as are being reported in recent experiments and DFT studies. Working within the analytical…

Materials Science · Physics 2019-10-03 Alejandro Lopez , Luis Colmenarez , Mayra Peralta , Francisco Mireles , Ernesto Medina

We report that the {\pi}-electrons of graphene can be spin-polarized to create a phase with a significant spin-orbit gap at the Dirac point (DP) using a graphene-interfaced topological insulator hybrid material. We have grown epitaxial…

We discuss the effect of the spin-orbit interaction on the band structure, wave functions and low temperature conductance of long quasi-one-dimensional electron systems patterned in two-dimensional electron gases (2DEG). Our model for these…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. V. Moroz , C. H. W. Barnes

We propose a procedure for extraction of the Fermi surface for a two-dimensional electron gas with a strong Rashba spin-orbit coupling from conductance microscopy. Due to the interplay between the effective spin-orbit magnetic field and the…

Mesoscale and Nanoscale Physics · Physics 2016-02-05 K. Kolasiński , H. Sellier , B. Szafran

The aim of this work is to describe the spin magnetization of graphene with Rashba spinorbit coupling and Zeeman effect. It is shown that the magnetization depends critically on the spin-orbit coupling l that is controlled with an external…

Strongly Correlated Electrons · Physics 2017-08-28 Federico Escudero , Lucas Sourrouille , Juan Sebastián Ardenghi , Paula Jasen

Electronic band structure for electrons bound on periodic minimal surfaces is differential-geometrically formulated and numerically calculated. We focus on minimal surfaces because they are not only mathematically elegant (with the surface…

Materials Science · Physics 2009-11-07 H. Aoki , M. Koshino , D. Takeda , H. Morise

We study the magnetic-field dependence of Landau levels in graphene proximitized by large spin-orbit coupling materials, such as transition-metal dichalcogenides or topological insulators. In addition to the Rashba coupling, two types of…

Mesoscale and Nanoscale Physics · Physics 2020-10-28 Tobias Frank , Jaroslav Fabian

We study the ground state properties of an ABA-stacked trilayer graphene. The low energy band structure can be described by a combination of both a linear and a quadratic particle-hole symmetric dispersions, reminiscent of monolayer- and…

Mesoscale and Nanoscale Physics · Physics 2012-03-08 Ralph van Gelderen , Lih-King Lim , C. Morais Smith

Spin electronic structure of graphene pi-states and Pt 5d-states for the Graphene/Pt interface has been investigated. Here, we report a large induced spin-orbit splitting (~70-100 meV) of graphene pi-states with formation of non-degenerated…

Mesoscale and Nanoscale Physics · Physics 2013-12-30 A. M. Shikin , A. A. Rybkina , A. G. Rybkin , I. I. Klimovskikh , P. N. Skirdkov , K. A. Zvezdin , A. K. Zvezdin

Graphene- the wonder material has attracted a great deal of attention from varied fields of condensed matter physics, materials science and chemistry in recent times. Its 2D atomic layer structure and unique electronic band structure makes…

Materials Science · Physics 2011-08-23 Deep Jariwala , Anchal Srivastava , Pulickel Ajayan

In this report we give a brief introduction on the occurrence of topologically protected one-dimensional electronic states in group IV two-dimensional graphene-like materials. We discuss the effect of spin-orbit coupling on the electronic…

Mesoscale and Nanoscale Physics · Physics 2023-11-28 H. J. W. Zandvliet , J. D. Verbakel , Q. Yao , K. Sotthewes , P. Bampoulis
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