Quantum diffusion in irregular crystals containing two-level tunnel systems |
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Authors: | L. L. Buishvili L. Z. Zakharov A. I. Tugushi |
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Affiliation: | (1) Institute of Physics of the Georgian Academy of Sciences, USA;(2) Tbilisi State University, USSR |
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Abstract: | The quantum diffusion problem for admixture particles interacting with two-level tunnel systems (TLS) is investigated. It is shown that for the temperature range 0 < T 1 K (where 0 is the mean value of the energy level disturbance for admixture particles in the neighboring wells), and the TLS concentration is ND 1027 m–3, the quantum diffusion coefficient for the admixture particles is determined by their interaction with the TLS's.Dedicated to the memory of Dmitri Nikolajevich ZubarevTranslated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 106, No. 3, pp. 489–497, March, 1996.Translated by A. R. Shirikyan. |
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