Excitation-assisted disordering of GeTe and related solids with resonant bonding

A. V. Kolobov, P. Fons, J. Tominaga, M. Hase

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

GeTe and related phase-change alloys are characterized by resonant bonding, where the same p-orbitals are used to form bonds on both sides of the atom. In this work, we propose that inversion of the phase of the wave functions associated with electronic excitation plays a crucial role in structural phenomena, varying from ferroelectric-to-paraelectric phase transition to amorphization. A special case of coherent phase-flips may generate layer-by-layer evaporation and fabrication of graphene-like layer structures of phase-change materials if appropriate excitation conditions are satisfied for single crystal excitation.

Original languageEnglish
Pages (from-to)10248-10253
Number of pages6
JournalJournal of Physical Chemistry C
Volume118
Issue number19
DOIs
Publication statusPublished - 2014 May 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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