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Quantum diffusion in irregular crystals containing two-level tunnel systems

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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 ω0 < T ≲ 1 K (where ω0 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.

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Authors and Affiliations

  1. Institute of Physics of the Georgian Academy of Sciences, USA

    L. L. Buishvili, L. Z. Zakharov & A. I. Tugushi

  2. Tbilisi State University, USSR

    L. L. Buishvili, L. Z. Zakharov & A. I. Tugushi

Authors
  1. L. L. Buishvili
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  2. L. Z. Zakharov
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  3. A. I. Tugushi
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Additional information

Dedicated to the memory of Dmitriί Nikolajevich Zubarev

Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 106, No. 3, pp. 489–497, March, 1996.

Translated by A. R. Shirikyan.

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Buishvili, L.L., Zakharov, L.Z. & Tugushi, A.I. Quantum diffusion in irregular crystals containing two-level tunnel systems. Theor Math Phys 106, 401–407 (1996). https://doi.org/10.1007/BF02071484

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  • DOI: https://doi.org/10.1007/BF02071484

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