Quenched Dislocation Enhanced Supersolid Ordering

TL;DR

This paper uses Landau theory to show that quenched dislocations can enable the supersolid to normal solid transition, predicting how transition temperature, superfluid density, and specific heat depend on dislocation spacing and temperature.

Contribution

It introduces a theoretical framework demonstrating how quenched dislocations facilitate the supersolid transition and provides testable predictions for experimental validation.

Findings

Dislocations can induce the SS to NS transition.

Transition temperature depends on dislocation spacing.

Predictions applicable to various systems like ferromagnets.

Abstract

I show using Landau theory that quenched dislocations can facilitate the supersolid (SS) to normal solid (NS) transition, making it possible for the transition to occur even if it does not in a dislocation-free crystal. I make detailed predictions for the dependence of the SS to NS transition temperature T_c(L), superfluid density %\rho_S(T, L), and specific heat C(T,L) on temperature T and dislocation spacing L, all of which can be tested against experiments. The results should also be applicable to an enormous variety of other systems, including, e.g., ferromagnets.