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The disordered Fermi‐liquid fixed point and its instabilities
Author(s) -
Belitz D.,
Kirkpatrick T.R.
Publication year - 1999
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/(sici)1521-3889(199911)8:7/9<765::aid-andp765>3.0.co;2-b
Subject(s) - condensed matter physics , superconductivity , physics , fermi liquid theory , quantum critical point , quantum phase transition , fixed point , scaling , fermi gamma ray space telescope , quantum , phase transition , quantum mechanics , mathematics , geometry , mathematical analysis
The concept of a disordered Fermi‐liquid fixed point is introduced and used to understand various properties of disordered metals within a unifying framework. Corrections to scaling near this fixed point give what are commonly called weak‐localization effects. Various instabilities of the disordered Fermi‐liquid phase are discussed. These include two distinct types of superconducting‐to‐normal‐metal quantum phase transitions. First, the quantum phase transition from a disordered metal to a conventional superconductor in bulk materials is considered. Second, a quantum phase transition in two dimensions from metallic‐like behavior to a novel type of disorder induced, spin‐triplet, even‐parity, superconductivity is treated. The paper is concluded with a discussion of the nature of the ground state of two‐dimensional, disordered electron systems.