Superfluid-insulator transition in disordered boson systems

Conference · Thu Oct 01 00:00:00 EDT 1992 · Journal of Low Temperature Physics; (United States)

OSTI ID:7173951

Trivedi, N ^[1]; Ullah, S ^[2]

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1. Argonne National Lab., IL (United States)
2. James Franck Inst., Chicago, IL (United States)

The authors review the localization problem in two dimensions for interacting bosons in a random potential. This problem is intimately related to the study of [sup 4]He adsorbed in porous media, Josephson junction arrays, disordered superconducting films and vortex glasses. Using path integral Monte Carlo techniques, the authors find a superfluid, a localized or Bose glass' insulator with gapless excitations, and (at commensurate densities) a Mott insulator with a finite gap to excitations.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7173951
• Report Number(s): CONF-9206305-Pt.1; CODEN: JLTPAC; TRN: 92-037909
• Journal Information: Journal of Low Temperature Physics; (United States), Vol. 89:1-2; Conference: Symposium on quantum fluids and solids, University Park, PA (United States), 15-19 Jun 1992; ISSN 0022-2291
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HELIUM 4
ADSORPTION
JOSEPHSON JUNCTIONS
MATHEMATICAL MODELS
TYPE-II SUPERCONDUCTORS
BOSE-EINSTEIN CONDENSATION
BOSONS
INTERACTIONS
MONTE CARLO METHOD
PHASE TRANSFORMATIONS
SUPERCONDUCTING FILMS
EVEN-EVEN NUCLEI
FILMS
HELIUM ISOTOPES
ISOTOPES
JUNCTIONS
LIGHT NUCLEI
NUCLEI
SORPTION
STABLE ISOTOPES
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
665420* - Superfluidity- (1992-)
665411 - Basic Superconductivity Studies- (1992-)
665412 - Superconducting Devices- (1992-)