Fizika Nizkikh Temperatur: Volume 48, Number 6 (June 2022), p. 487-510    ( to contents , go back )

Supersolid induced by dislocations with superfluid cores (Review Article)

D. V. Fil

Institute for Single Crystals of National Academy of Sciences of Ukraine, Kharkiv 61072, Ukraine
V. N. Karazin Kharkiv National University, Kharkiv 61022, Ukraine
E-mail: dmitriifil@gmail.com

S. I. Shevchenko

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine Kharkiv 61103, Ukraine
E-mail: shevchenko@ilt.kharkov.ua
pos Анотація:612

Received 17 January, 2022, published online April 25, 2022

Abstract

Dislocation model of the supersolid state of 4He was proposed in 1987 by one of the authors of the review. The model obtained strong support by numerous experimental and theoretical investigations from 2007 to date. In these investigations, the validity of the idea put forward in 1987 was confirmed, and new conceptions of superclimb of dislocations and of the giant isochoric compressibility or the syringe effect were proposed. In this paper, we review main achievements of theoretical and experimental studies of dislocation-induced supersolid and present current understanding of this phenomenon.

Key words: superfluidity, supersolid, dislocations, solid He.

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