Quantum oscillations in the thermal transport properties of tin

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Abstract
Large amplitude quantum oscillations from orbits delta 1, delta 2 and tau are reported in the thermal magnetoresistance and thermoelectric EMF of tin. The principal oscillations, from delta 1, correspond to the oscillations introduced into the electrical magnetoresistance by magnetic breakdown. These oscillations are accounted for, in detail, by introducing into the theory of thermal transport properties the conductivity tensors which successfully explained the electrical resistance oscillations. The field and temperature dependences of the amplitude of oscillations in the thermal effects were markedly different to those for electrical resistance. From them several estimates of the cyclotron mass of delta 1, at 22 degrees from the c axis, were found to be consistent with each other and in agreement with cyclotron resonance, at 0.12 m0.

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