Thermal transport properties of MgB2 - art. no. 020505

The thermal transport properties and magnetic susceptibility of MgB2 have b een studied. The thermoelectric power with a positive sign shows a nearly T -linear increase up to similar to 150 K but shows a saturated behavior at h igher temperatures, which suggests the existence of two types of charge car rier. The magnetic susceptibility above T-c shows a Pauli paramagnetism but shows a substantial T dependence which should include the information of t he band structure of MgB2. The thermal conductivity shows a suppression bel ow T-c without a clear anomaly at T-c which is a result of the reduction of the normal charge carrier concentration below T-c.