Anomalous orbital magnetism in Dirac-electron systems: Role of pseudospin paramagnetism

Mikito Koshino, Tsuneya Ando

Research output: Contribution to journalArticlepeer-review

126 Citations (Scopus)

Abstract

The orbital diamagnetic susceptibility is calculated in monolayer and bilayer graphenes with band gap as well as in three-dimensional Dirac systems. It is demonstrated that the pseudospin degree of freedom such as valleys produces paramagnetic susceptibility analogous to contribution from real spin, and it dominates over the Landau diamagnetism. The pseudospin paramagnetism explains the origin of a singular diamagnetism which is present only in the band-gap region and disappears rapidly inside the conduction and valence bands.

Original languageEnglish
Article number195431
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number19
DOIs
Publication statusPublished - 2010 May 25

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Anomalous orbital magnetism in Dirac-electron systems: Role of pseudospin paramagnetism'. Together they form a unique fingerprint.

Cite this