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Title: Phase-Slip Avalanches in the Superflow of {sup 4}He through Arrays of Nanosize Apertures

Abstract

In response to recent experiments by the Berkeley group, we construct a model of superflow through an array of nanosize apertures that incorporates two basic ingredients: (1) disorder associated with each aperture having its own random critical velocity, and (2) effective interaperture coupling, mediated through the bulk superfluid. As the disorder becomes weak there is a transition from a regime where phase slips are largely independent to a regime where interactions lead to system-wide avalanches of phase slips. We explore the flow dynamics in both regimes, and make connections to the experiments.

Authors:
; ;  [1]
  1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080 (United States)
Publication Date:
OSTI Identifier:
20951280
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 17; Other Information: DOI: 10.1103/PhysRevLett.98.175301; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; APERTURES; CRITICAL VELOCITY; HELIUM 4; NANOSTRUCTURES; RANDOMNESS; SUPERFLUIDITY

Citation Formats

Pekker, David, Barankov, Roman, and Goldbart, Paul M. Phase-Slip Avalanches in the Superflow of {sup 4}He through Arrays of Nanosize Apertures. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.175301.
Pekker, David, Barankov, Roman, & Goldbart, Paul M. Phase-Slip Avalanches in the Superflow of {sup 4}He through Arrays of Nanosize Apertures. United States. doi:10.1103/PHYSREVLETT.98.175301.
Pekker, David, Barankov, Roman, and Goldbart, Paul M. Fri . "Phase-Slip Avalanches in the Superflow of {sup 4}He through Arrays of Nanosize Apertures". United States. doi:10.1103/PHYSREVLETT.98.175301.
@article{osti_20951280,
title = {Phase-Slip Avalanches in the Superflow of {sup 4}He through Arrays of Nanosize Apertures},
author = {Pekker, David and Barankov, Roman and Goldbart, Paul M.},
abstractNote = {In response to recent experiments by the Berkeley group, we construct a model of superflow through an array of nanosize apertures that incorporates two basic ingredients: (1) disorder associated with each aperture having its own random critical velocity, and (2) effective interaperture coupling, mediated through the bulk superfluid. As the disorder becomes weak there is a transition from a regime where phase slips are largely independent to a regime where interactions lead to system-wide avalanches of phase slips. We explore the flow dynamics in both regimes, and make connections to the experiments.},
doi = {10.1103/PHYSREVLETT.98.175301},
journal = {Physical Review Letters},
number = 17,
volume = 98,
place = {United States},
year = {Fri Apr 27 00:00:00 EDT 2007},
month = {Fri Apr 27 00:00:00 EDT 2007}
}