Pressure dependent thermoelectric power of MgB2 superconductor
E. S. Choi, W. Kang, J. Y. Kim, Min-Seok Park, C. U. Jung, Heon-Jung Kim, Sung-Ik Lee
Abstract
We have measured temperature dependence of thermoelectric power (TEP) on MgB2 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 Tc 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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