Influence of Deformation on Pb1−xInxTe1−yIy and Pbx1−−ySnxInyTe Films

Taras Parashchuk, Leonid Chernyak, Sergey Nemov, Zinovi Dashevsky

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Herein, the original technique for transport measurements at one-axis deformation is applied for the characterization of In-doped n-type Pb1−xSnxTe thin films on a mica substrate. The main advantage of the developed setup is the possibility of obtaining a significantly higher pressure compared with bulk samples. A systematic study of the transport properties as a function of pressure for In-doped PbTe and PbSnTe films is conducted. A huge deformation of up to ≈6% without sample destruction is obtained within one-axis deformation and an applied pressure of up to ≈30 kbar for Pb1−xInxTe1−yIy and Pb1−x−ySnxInyTe thin films. This allowed us to determine the position of the In resonance level in the band spectrum of the PbSnTe compound as a function of the pressure. The In impurity level is moving up with the application of pressure. Such a conclusion is confirmed by the Hall effect and electrical conductivity measurements for Pb1−xSnxTe films doped with In and can be explained by the fact that In impurity wave functions are strongly localized and interact weakly with Bloch states of PbSnTe and with each other.

Original languageEnglish
Article number2000304
JournalPhysica Status Solidi (B): Basic Research
Volume257
Issue number12
DOIs
StatePublished - 1 Dec 2020

Keywords

  • indium quasi-local levels
  • lead chalcogenides
  • one-axis deformation
  • thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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