Superconductor-insulator transition in a disordered electronic system

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.R3756· OSTI ID:288186

Trivedi, N ^[1]; Scalettar, R T ^[2]; Randeria, M ^[1]

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1. Materials Science Division 223, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Department of Physics, University of California, Davis, California 95616 (United States)

We study an electronic model of a two-dimensional {ital s}-wave superconductor in a random potential using quantum Monte Carlo simulations. The superfluid density and the strength of the delta function in the optical conductivity are found to vanish beyond a critical disorder. We calculate the temperature-dependent resistivity {rho}{sub dc}({ital T}) for a highly disordered interacting Fermi system. Using this we identify the nonsuperconducting state as an insulator. {copyright} {ital 1996 The American Physical Society.}

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 288186
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 6; Other Information: PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
SUPERCONDUCTORS
TWO-DIMENSIONAL CALCULATIONS
PHASE TRANSFORMATIONS
ORDER-DISORDER MODEL
FERMIONS
MONTE CARLO METHOD
SUPERFLUIDITY
S WAVES