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Weak localization and the Mooij rule in disordered metals
Author(s) -
Park MiAe,
Savran Kerim,
Kim YongJihn
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200301654
Subject(s) - electrical resistivity and conductivity , condensed matter physics , residual resistivity , superconductivity , residual , thermal conductivity , temperature coefficient , coupling constant , constant (computer programming) , weak localization , phonon , coupling (piping) , conductivity , electron , materials science , physics , thermodynamics , quantum mechanics , mathematics , magnetic field , metallurgy , algorithm , computer science , programming language , magnetoresistance
Weak localization leads to the same correction to both the conductivity and the McMillan's electron–phonon coupling constant λ (and λ tr , transport electron–phonon coupling constant). Consequently the temperature dependence of the thermal electrical resistivity is decreasing as the conductivity is decreasing due to weak localization, which results in the decrease of the temperature coefficient of resistivity (TCR) with increasing the residual resistivity. When λ and λ tr are approaching zero, only the residual resistivity part remains and it gives rise to the negative TCR. Accordingly, the Mooij rule is a manifestation of weak localization correction to the conductivity and the electron–phonon interaction. This understanding provides a new means of probing the phonon‐mechanism in exotic superconductors and an opportunity of fabricating new novel devices.