Dislocation Mobility and Anomalous Shear Modulus Effect in ${}^4$He Crystals

Abdul N. Malmi-Kakkada, Oriol T. Valls, Chandan Dasgupta

We calculate the dislocation glide mobility in solid ${}^4$He within a model that assumes the existence of a superfluid field associated with dislocation lines. Prompted by the resul…