On the Chemical Bonding of Amorphous Sb2Te3

Felix C. Mocanu, Konstantinos Konstantinou, Juraj Mavračić, Stephen R. Elliott

Tutkimustuotos: LetterScientificvertaisarvioitu

1 Sitaatiot (Scopus)

Abstrakti

An analysis of the electronic structure and chemical bonding in glassy Sb2Te3 is carried out by means of density functional theory calculations, on a computer model generated by ab initio molecular dynamics. A significant antibonding character of electronic states below the Fermi level is observed, which is the characteristic feature of phase-change memory materials. Near-linear chains, with alternating long and short bonds, are found to be an important geometric structural pattern related to this antibonding signature. The electronic structure and chemical bonding analysis, herein, reveals an emergent character of hypervalent interactions in the amorphous phase of Sb2Te3. The intimate link between these near-linear chains, hypervalent interactions, and the fast-switching properties of this technologically important material provides valuable information for the future development of phase-change memory materials.

AlkuperäiskieliEnglanti
Artikkeli2000485
Sivumäärä7
JulkaisuPhysica Status Solidi - Rapid Research Letters
Vuosikerta15
Numero3
DOI - pysyväislinkit
TilaJulkaistu - maalisk. 2021
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Julkaisufoorumi-taso

  • Jufo-taso 1

!!ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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