Superfluid Interfaces in Quantum Solids

Abstract

One scenario for the non-classical moment of inertia of solid He-4 discovered by Kim and Chan [Nature 427, 225 (2004)] is the superfluidity of micro-crystallite interfaces. On the basis of the most simple model of a quantum crystal--the checkerboard lattice solid--we show that the superfluidity of interfaces between solid domains can exist in a wide range of parameters. At strong enough inter-particle interaction, a superfluid interface becomes an insulator via a quantum phase transition. Under the conditions of particle-hole symmetry, the transition is of the standard U(1) universality class in 3D, while in 2D the onset of superfluidity is accompanied by the interface roughening, driven by fractionally charged topological excitations.

4 revtex4 pages

References in corpus (8)

• Worm algorithms for classical statistical models
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• Phase separation in supersolids
• Nature of the quantum phase transitions in the two-dimensional hardcore boson model
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Cited by in corpus (36)

• Supersolids: what and where are they ?
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• Disorder and the Supersolid State of Solid ${}^4$He
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• Superfluidity of Grain Boundaries in Solid Helium-4
• The fate of vacancy-induced supersolidity in 4He
• What makes a crystal supersolid ?
• Pressure-driven flow of solid helium
• Supersolid Helium at High Pressure
• Supersolid phases in the one dimensional extended soft core Bosonic Hubbard model
• Annealing Effect for Supersolid Fraction in ${}^4$He
• Nonclassical Rotational Inertia in Single Crystal Helium
• Intrinsic and dislocation induced elastic behavior of solid helium
• Quantum and thermal transitions out of the supersolid phase of a 2D quantum antiferromagnet
• Supersolidity from defect-condensation in the extended boson Hubbard model
• Squeezing superfluid from a stone: Coupling superfluidity and elasticity in a supersolid
• Superfluidity of Dense ${}^4$He in Vycor
• Supersolids in confined fermions on one-dimensional optical lattices
• Disorder-induced superfluidity
• Minimal Model for Disorder-induced Missing Moment of Inertia in Solid ${}^4$He
• Theory for supersolid ${}^4$He
• A glass anomaly in the shear modulus of solid ${}^4$He
• Temperature-dependence of small harmonically trapped atom systems with Bose, Fermi and Boltzmann statistics
• Search for supersolidity in 4He in low-frequency sound experiments
• Transverse Quantum Fluids
• Possible role of 3He impurities in solid 4He
• Quarter-filled supersolid and solid phases in the extended Bose-Hubbard model
• Superfluid-Insulator and Roughening Transitions in Domain Walls
• Density-wave-type supersolid of two-dimensional tilted dipolar bosons
• Mott Insulator - Superfluid Transitions in a Two Band Model at Finite Temperature and Possible Application to Supersolid 4He
• Theory of Supersolids beyond Mean-Field
• Surface instability and isotopic impurities in quantum solids
• Transverse Quantum Superfluids
• Quantum simulation of 3He impurities and of 4He interstitials in solid 4He
• The role of glass dynamics in the anomaly of the dielectric function of solid helium