Quantized magneto-thermopower in tunnel-coupled ballistic channels: sign reversal andoscillations

Abstract

The quantized electron-diffusion thermoelectric powerS is studied for a general one-dimensional band structure in ballistic channels withapplications to a single-quantum-well channel and tunnel-coupled double-quantum-wellchannels in a perpendicular magnetic field. We find a field-induced sign reversal ofS and oscillations in double-well channels.