Thermal metal in network models of a disordered two-dimensional superconductor

J. T. Chalker; N. Read; V. Kagalovsky; V. Kagalovsky; B. Horovitz; Y. Avishai; A. W. Ludwig

Thermal metal in network models of a disordered two-dimensional superconductor

J. T. Chalker, N. Read, V. Kagalovsky, V. Kagalovsky, B. Horovitz, Y. Avishai, A. W. Ludwig

Department of Physics

Research output: Contribution to journal › Article › peer-review

82 Scopus citations

Abstract

We study the symmetry class for localization which arises from models of noninteracting quasiparticles in disordered superconductors that have neither time-reversal nor spin-rotation invariance. Two-dimensional systems in this category, which is known as class D, can display phases with three different types of quasiparticle dynamics: metallic, localized, or with a quantized (thermal) Hall conductance. Correspondingly, they can show a variety of delocalization transitions. We illustrate this behavior by investigating numerically the phase diagrams of network models with the appropriate symmetry and show the appearance of the metallic phase.

Original language	English
Article number	012506
Pages (from-to)	125061-125064
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	1
State	Published - 1 Jan 2002

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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AU - Chalker, J. T.

AU - Read, N.

AU - Kagalovsky, V.

AU - Horovitz, B.

AU - Avishai, Y.

AU - Ludwig, A. W.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - We study the symmetry class for localization which arises from models of noninteracting quasiparticles in disordered superconductors that have neither time-reversal nor spin-rotation invariance. Two-dimensional systems in this category, which is known as class D, can display phases with three different types of quasiparticle dynamics: metallic, localized, or with a quantized (thermal) Hall conductance. Correspondingly, they can show a variety of delocalization transitions. We illustrate this behavior by investigating numerically the phase diagrams of network models with the appropriate symmetry and show the appearance of the metallic phase.

AB - We study the symmetry class for localization which arises from models of noninteracting quasiparticles in disordered superconductors that have neither time-reversal nor spin-rotation invariance. Two-dimensional systems in this category, which is known as class D, can display phases with three different types of quasiparticle dynamics: metallic, localized, or with a quantized (thermal) Hall conductance. Correspondingly, they can show a variety of delocalization transitions. We illustrate this behavior by investigating numerically the phase diagrams of network models with the appropriate symmetry and show the appearance of the metallic phase.

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ER -

Thermal metal in network models of a disordered two-dimensional superconductor

Abstract

ASJC Scopus subject areas

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