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Thermoelectric Properties of Bi1-xSbx Nanowire Arrays

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Abstract

We present here a thermoelectric transport property study of Bi1−xSbx alloy nanowires embedded in a dielectric matrix. Temperature-dependent resistance measurements exhibit nonmonotonic trends as the antimony mole fraction (x) increases, and a theoretical model is presented to explain the features that are related to the unusual band structure of Bi1−xSbx systems. Seebeck coefficient measurements are performed on nanowires with different diameters and compositions, showing enhanced thermopower over bulk Bi. The magneto-Seebeck coefficient of these nanowires also exhibits an unusual field dependence that is absent in bulk samples.

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Authors and Affiliations

  1. Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    Yu-Ming Lin & Mildred S. Dresselhaus

  2. Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    Stephen B. Cronin & Mildred S. Dresselhaus

  3. Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    Oded Rabin

  4. Department of Chemical Engineering Massachusetts Institute of Technology, Cambridge, MA, 02139, USA

    Jackie Y. Ying

Authors
  1. Yu-Ming Lin
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  2. Stephen B. Cronin
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  3. Oded Rabin
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  4. Jackie Y. Ying
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  5. Mildred S. Dresselhaus
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Lin, YM., Cronin, S.B., Rabin, O. et al. Thermoelectric Properties of Bi1-xSbx Nanowire Arrays. MRS Online Proceedings Library 691, 106 (2001). https://doi.org/10.1557/PROC-691-G10.6

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  • DOI: https://doi.org/10.1557/PROC-691-G10.6

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