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Pressure dependent thermoelectric power of MgB$_2$ superconductor

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arxiv cond-mat/0104454 v1 pith:AY4NFN2K submitted 2001-04-24 cond-mat.str-el cond-mat.supr-con

E. S. Choi , W. Kang , J. Y. Kim , Min-Seok Park , C. U. Jung , Heon-Jung Kim , Sung-Ik Lee This is my paper · ORCID
classification cond-mat.str-elcond-mat.supr-con
keywords pressuretemperaturecarriersdependencepowersuperconductorthermoelectricactivation
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abstract

We have measured temperature dependence of thermoelectric power (TEP) on MgB$_2$ superconductor under hydrostatic pressure. The sign and temperature dependence of TEP shows metallic hole carriers are dominant with activation type contribution at higher temperature. TEP increases with pressure while $T_c$ decrease with ratio -0.136 K/kbar. The data are discussed in consideration of carriers from different bands and anisotropy of compressibility.

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