Large displacement of germanium atoms in crystalline Ge2 Sb2 Te5

S. Shamoto, N. Yamada, T. Matsunaga, Th Proffen, J. W. Richardson, Jaiho Chung, T. Egami

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Local structure of NaCl-type crystalline Ge2 Sb2 Te5 has been studied by the atomic pair distribution function analysis of pulsed neutron powder diffraction data. We have found the large displacement of germanium atoms in this crystalline phase. Usually, such a large lattice distortion has disadvantages for the electric conductivity. The electronic band structure, however, implies that this significant distortion in addition to the lattice defect at Na site reduces only thermal conductivity, while the highly ordered tellurium atoms at Cl site keep high electric conductivity.

Original languageEnglish
Article number081904
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume86
Issue number8
DOIs
Publication statusPublished - 2005 Feb 21
Externally publishedYes

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germanium
conductivity
tellurium
atoms
thermal conductivity
distribution functions
neutrons
defects
electronics
diffraction

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Shamoto, S., Yamada, N., Matsunaga, T., Proffen, T., Richardson, J. W., Chung, J., & Egami, T. (2005). Large displacement of germanium atoms in crystalline Ge2 Sb2 Te5. Applied Physics Letters, 86(8), 1-3. [081904]. https://doi.org/10.1063/1.1861976

Large displacement of germanium atoms in crystalline Ge2 Sb2 Te5. / Shamoto, S.; Yamada, N.; Matsunaga, T.; Proffen, Th; Richardson, J. W.; Chung, Jaiho; Egami, T.

In: Applied Physics Letters, Vol. 86, No. 8, 081904, 21.02.2005, p. 1-3.

Research output: Contribution to journalArticle

Shamoto, S, Yamada, N, Matsunaga, T, Proffen, T, Richardson, JW, Chung, J & Egami, T 2005, 'Large displacement of germanium atoms in crystalline Ge2 Sb2 Te5', Applied Physics Letters, vol. 86, no. 8, 081904, pp. 1-3. https://doi.org/10.1063/1.1861976
Shamoto S, Yamada N, Matsunaga T, Proffen T, Richardson JW, Chung J et al. Large displacement of germanium atoms in crystalline Ge2 Sb2 Te5. Applied Physics Letters. 2005 Feb 21;86(8):1-3. 081904. https://doi.org/10.1063/1.1861976
Shamoto, S. ; Yamada, N. ; Matsunaga, T. ; Proffen, Th ; Richardson, J. W. ; Chung, Jaiho ; Egami, T. / Large displacement of germanium atoms in crystalline Ge2 Sb2 Te5. In: Applied Physics Letters. 2005 ; Vol. 86, No. 8. pp. 1-3.
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