Pseudo-Spin-Orbit Coupling in Graphene within Hydrogenic Impurity Context

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KANDEMİR B. S.

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, cilt.82, sa.9, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 82 Sayı: 9
  • Basım Tarihi: 2013
  • Doi Numarası: 10.7566/jpsj.82.094706
  • Dergi Adı: JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: graphene, impurities in graphene, spin-orbit interaction, QUANTUM, ELECTRONS
  • Ankara Üniversitesi Adresli: Evet

Özet

In graphene, we report the first theoretical demonstration of how a pseudo-spin-orbit interaction can be controlled by tuning a uniform magnetic field and/or by changing the strength of a long-range Coulomb-like impurity (adatom), as well as the gap parameter. In the impurity context, we find that the pseudo-spin-orbit interaction energy may be enhanced by increasing the strength of the magnetic field and/or by decreasing the band gap mass term. Additionally, it may be strongly enhanced by increasing the impurity strength.