2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/17644We 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.5 pages, 5 figuresStrongly Correlated ElectronsSuperconductivitytext