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Phonon Superlattice Transport
PHYSICAL REVIEW B, no. 17 (1997): 10754-10757
Abstract
We predict in Si/Ge superlattices a dramatic high-temperature suppression of the perpendicular thermal transport. Total internal reflection confines the superlattice modes and significantly reduces the average group velocity at nonzero in-plane momenta. These consequences of the acoustic mismatch cause at high temperatures an order-of-mag...More
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