Supertransport by Superclimbing Dislocations in ${}^4$He: When All Dimensions Matter

Abstract

The unique superflow-through-solid effect observed in solid Helium-4 and attributed to the quasi-one-dimensional superfluidity along the dislocation cores exhibits two extraordinary features: (i) an exponentially strong suppression of the flow by a moderate increase in pressure, and (ii) an unusual temperature dependence of the flow rate with no analogy to any known system and in contradiction with the standard Luttinger liquid paradigm. Based on ab initio and model simulations, we argue that the two features are closely related: Thermal fluctuations of the shape of a superclimbing edge dislocation induce large, correlated, and asymmetric stress fields acting on the superfluid core. The critical flux is most sensitive to strong rare fluctuations and hereby acquires a sharp temperature dependence observed in experiments.

replaced by updated version accepted by PRL

References in corpus (4)

• Worm Algorithm and Diagrammatic Monte Carlo: A New Approach to Continuous-Space Path Integral Monte Carlo Simulations
• Luttinger Liquid in the Core of Screw Dislocation in Helium-4
• Observation of Unusual Mass Transport in Solid hcp 4He
• Phase transition of one dimensional bosons with strong disorder

Cited by in corpus (9)

• Transverse Quantum Fluids
• Universal Correlations as Fingerprints of Transverse Quantum Fluids
• Absence of off-diagonal long-range order in hcp ${}^4$He dislocation cores
• Superclimbing modes in transverse quantum fluids: signature statistical and dynamical features
• Transverse Quantum Superfluids
• Autonomous dynamics of two-dimensional insulating domain with superclimbing edges
• The solid phase of He-4: A Monte Carlo simulation study
• Comment on "Absence of Off-Diagonal Long- Range Order in hcp ${}^4$He Dislocation Cores"
• Friedel oscillations in one-dimensional 4He