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Seebeck coefficients in nanoscale junctions: Effects of electron-vibration scattering and local heating

Bailey C. Hsu, Yu-Shen Liu, Sheng Hsien Lin, and Yu-Chang Chen
Phys. Rev. B 83, 041404(R) – Published 25 January 2011

Abstract

We report first-principles calculations of inelastic Seebeck coefficients in an aluminum monatomic junction. We compare the elastic and inelastic Seebeck coefficients with and without local heating. In the low-temperature regime, the signature of normal modes in the profiles of the inelastic Seebeck effects is salient. The inelastic Seebeck effects are enhanced by the normal modes and further magnified by local heating. In the high-temperature regime, the inelastic Seebeck effects are weakly suppressed due to the quasiballistic transport.

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  • Received 29 September 2010

DOI:https://doi.org/10.1103/PhysRevB.83.041404

© 2011 American Physical Society

Authors & Affiliations

Bailey C. Hsu1, Yu-Shen Liu1,4, Sheng Hsien Lin2,3, and Yu-Chang Chen1,*

  • 1Department of Electrophysics, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
  • 2Department of Applied Chemistry, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
  • 3Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan
  • 4College of Physics and Engineering, Changshu Institute of Technology, Suzhou 215500, China

  • *yuchangchen@mail.nctu.edu.tw

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Issue

Vol. 83, Iss. 4 — 1 January 2011

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