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A calculation of phonon drag thermopower for a 2DEG subjected to an in-plane magnetic field

1992; IOP Publishing; Volume: 4; Issue: 46 Linguagem: Inglês

10.1088/0953-8984/4/46/012

1361-648X

Hui Tang, P N Butcher,

Thermal properties of materials

The phonon drag contribution Sgxx to the thermopower is calculated for a 2DEG by using Boltzmann equations for both electrons and phonons. The system has a parabolic confining potential and is subjected to an in-plane magnetic induction field B and the temperature gradient is parallel to B. A quasi-phonon model is proposed which greatly simplifies the calculation of Sg. Qualitative comparison is made between the theoretical predictions and experimental data.