Ground state magnetization of conduction electrons in graphene with Zeeman effect

F. ESCUDERO; J. S. ARDENGHI; L. SOURROUILLE; P. JASEN

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2016 vol. 429 p. 294 - 298

0304-8853

In this work we address the ground state magnetization in graphene, consideringthe Zeeman effect and taking into account the conduction electrons in the longwavelength approximation. We obtain analytical expressions for the magnetizationat T=0 K, where the oscillations given by the de Haas van Alphen (dHvA) effect arepresent. We find that the Zeeman effect modifies the magnetization by introducingnew peaks associated with the spin splitting of the Landau levels. These peaks arevery small for typical carrier densities in graphene, but become more importantfor higher densities. The obtained results provide insight of the way in which theZeeman effect modifies the magnetization, which can be useful to control andmanipulate the spin degrees of freedom.