Ab-initio calculations and structural studies of (SiTe)2(Sb2Te3)n (n: 1, 2, 4 and 6) phase-change superlattice films

Y. Saito, J. Tominaga, P. Fons, A. V. Kolobov, T. Nakano

研究成果: Article査読

26 被引用数 (Scopus)

抄録

(SiTe)2(Sb2Te3)n phase-change superlattices were investigated theoretically and experimentally. Ab-initio first principle simulations predicted that the (SiTe)2(Sb2Te3)n structures are stable and possess a Dirac semimetal-like band structure. Calculation of the Z2 invariant indicated that the structure was topologically nontrivial. (SiTe)2(Sb2Te3)n superlattice structures derived from first-principles were successfully fabricated on a Si substrate by RF-magnetron sputtering. XRD and TEM indicated that the superlattice films were highly oriented with the 00X planes of Sb2Te3 and the superlattice normal to the substrate surface. The (SiTe)2(Sb2Te3)n superlattice is suggested as new material system for interfacial phase-change memory applications.

本文言語English
ページ(範囲)302-306
ページ数5
ジャーナルPhysica Status Solidi - Rapid Research Letters
8
4
DOI
出版ステータスPublished - 2014 4月
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学

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