Magnetization in pristine graphene with Zeeman splitting and variable spin-orbit coupling

FEDERICO ESCUDERO; LUCAS SOURROUILLE; JUAN SEBASTIAN ARDENGHI; PAULA JASEN

SUPERLATTICES AND MICROSTRUCTURES

ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2017 vol. 101 p. 537 - 546

0749-6036

The aim of this work is to describe the spin magnetization of graphene with Rashba spin-orbit coupling and Zeeman effect. It is shown that the magnetization depends critically onthe spin-orbit coupling l that is controlled with an external electric field. In turn, by manipulating the density of charge carriers, it is shown that spin up and down Landaulevels mix introducing jumps in the spin magnetization. Two magnetic oscillations phasesare described that can be tunable through the applied external fields. The maximum and minimum of the oscillations can be alternated by taking into account how the energylevels are filled when the Rashba-spin-orbit coupling is turned on. The results obtained are of importance to design superlattices with variable spin-orbit coupling with differentconfigurations in which spin oscillations and spin filters can be developed.