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
S. I. Shevchenko
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine Kharkiv 61103, Ukraine
Received 17 January, 2022, published online April 25, 2022
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.