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The sound velocity in superconductors
Булыженков И.Э. (Bulyzhenkov I.E.), Ивлев Б.И. (lvlev B.I.) The sound velocity in superconductors // Sov. Phys. - JETP. 1976. 44(3): 613-617.

Категории: Исследование, Авторский указатель

The sound velocity in superconductors
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Аннотация

We consider the influence of non-linear etTects, which arise when sound propagates in a superconductor, on the temperature dependence of the sound speed. We show that the experimentally observed change in this behavior with increasing sound wave amplitUde can be explained if we invoke a specific heating of the electron gas. Moreover, we show that' the minimum in the temperature dependence of the velocity of transverse sound remains also in the "dirty" limit, in contrast to the result obtained using the two-fluid model of a superconductor.

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