arxiv: 1408.4305 · v1 · pith:G2NH662Xnew · submitted 2014-08-19 · ❄️ cond-mat.mtrl-sci

Magnetoresistive property study of direct and indirect band gap thermoelectric Bi-Sb alloys

Diptasikha Das , K. Malik , S. Bandyopadhyay , D. Das , S. Chatterjee , Aritra Banerjee This is my paper

classification ❄️ cond-mat.mtrl-sci

keywords fieldbandhighalloysbi-sbdirectindirectlinear

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We report magnetoresistive properties of direct and indirect band gap Bismuth-Antimony (Bi-Sb) alloys. Band gap increases with magnetic field. Large positive magnetoresistance (MR) approaching to 400 % is observed. Low field MR experiences quadratic growth and at high field it follows a nearly linear behavior without sign of saturation. Carrier mobility extracted from low field MR data, depicts remarkable high value. Correlation between MR and mobility is revealed. We demonstrate that the strong nearly linear MR at high field can be well understood by classical method, co-build by Parish and Littlewood.

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Magnetoresistive property study of direct and indirect band gap thermoelectric Bi-Sb alloys

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