First principles study of metal/Bi2Te3 interfaces: Implications to reduce contact resistance

Ka Xiong, Weichao Wang, Husam Niman Alshareef, Rahul P. Gupta, John B. White, Bruce E. Gnade, Kyeongjae Cho*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We investigate the band offsets and stability for Ni/Bi2Te 3 and Co/Bi2Te3 interfaces by first principles calculations. It is found that the surface termination strongly affects the band offsets. Ni and Co are found to form Ohmic contacts to Bi2Te 3. The interface formation energies for Co/Bi2Te 3 interfaces are much lower than those of Ni/Bi2Te 3 interfaces. Our calculations are consistent with the experimental data.

Original languageEnglish (US)
Title of host publicationMaterials and Devices for Thermal-to-Electric Energy Conversion
Pages103-108
Number of pages6
StatePublished - Dec 1 2009
Event2009 MRS Spring Meeting: Materials and Devices for Thermal-to-Electric Energy Conversion - San Francisco, CA, United States
Duration: Apr 13 2009Apr 17 2009

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1166
ISSN (Print)0272-9172

Other

Other2009 MRS Spring Meeting: Materials and Devices for Thermal-to-Electric Energy Conversion
CountryUnited States
CitySan Francisco, CA
Period04/13/0904/17/09

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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