Stability of germanene under tensile strain

Thaneshwor P. Kaloni, Udo Schwingenschlögl

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

The stability of germanene under biaxial tensile strain and the accompanying modifications of the electronic properties are studied by density functional theory. The phonon spectrum shows that up to 16% strain the germanene lattice is stable, where the Dirac cone shifts towards higher energy and hole-doped Dirac states are achieved. The latter is due to weakening of the Ge-Ge bonds and reduction of the s-p hybridization. Our calculated Grüneisen parameter shows a similar dependence on the strain as reported for silicene (which is different from that of graphene). © 2013 Elsevier B.V. All rights reserved.
Original languageEnglish (US)
Pages (from-to)137-140
Number of pages4
JournalChemical Physics Letters
Volume583
DOIs
StatePublished - Sep 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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