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Scientific article
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English

Doping Nature of Native Defects in 1T-TiSe2

Published inPhysical review letters, vol. 112, no. 19, 197001
Publication date2014
Abstract

The transition-metal dichalcogenide 1T-TiSe2 is a quasi-two-dimensional layered material with a charge density wave (CDW) transition temperature of TCDW ≈ 200 K. Self-doping effects for crystals grown at different temperatures introduce structural defects, modify the temperature-dependent resistivity, and strongly perturbate the CDW phase. Here, we study the structural and doping nature of such native defects combining scanning tunneling microscopy or spectroscopy and ab initio calculations. The dominant native single atom dopants we identify in our single crystals are intercalated Ti atoms, Se vacancies, and Se substitutions by residual iodine and oxygen.

Keywords
  • STM/STS
  • Dichalcogenide
  • Doping atoms
Research group
Citation (ISO format)
HILDEBRAND, B. et al. Doping Nature of Native Defects in 1<em>T</em>-TiSe<sub>2</sub>. In: Physical review letters, 2014, vol. 112, n° 19, p. 197001. doi: 10.1103/PhysRevLett.112.197001
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Article (Published version)
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ISSN of the journal0031-9007
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Technical informations

Creation06/13/2014 2:05:00 PM
First validation06/13/2014 2:05:00 PM
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