On the mobility of vacancies in solid 4He
N. E. DyuminB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, KharkovN. V. ZuevB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, KharkovS. V. SvatkoB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, Kharkov
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It is shown that the experimental results concerning the self-diffusion coefficient in low-density fcc 4He can be described noncontradictorily by using the quantum mobility of bivacancies. The diffusion coefficient, energy gap and the width of the vacancion energy band are determined.
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