Volume 84, Number 2, October 2008
|Number of page(s)||5|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||14 October 2008|
Effect of disorder on a Pomeranchuk instability
Department of Physics, Royal Holloway, University of London - Egham, Surrey TW20 0EX, UK, EU
2 School of Physics and Astronomy, University of Birmingham - Birmingham B15 2TT, UK, EU
Accepted: 9 September 2008
We study the effect of weak and dilute disorder on the order parameter equation and transition temperature of a Pomeranchuk-type Fermi-surface instability using replica mean-field theory. We consider the example of a phase transition to a type Fermi surface distortion, and show that, in the regime where such a transition is second order, the transition temperature is reduced by disorder in essentially the same way as that for a d-wave superconductor. We argue that observing this disorder dependence of metal-to-metal transition is a useful indicator of a finite angular momentum Fermi surface distortion.
PACS: 71.10.Ay – Fermi-liquid theory and other phenomenological models / 71.23.-k – Electronic structure of disordered solids
© EPLA, 2008
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