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Crossover from non-Fermi liquid to Fermi liquid behavior close to a quantum critical point: A brief review

✍ Scribed by P. Schlottmann

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 321 KB
Volume: 404
Category: Article
ISSN: 0921-4526
DOI: 10.1016/j.physb.2009.07.043

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✦ Synopsis

The nesting of the Fermi surfaces of an electron and a hole pocket separated by a nesting vector Q and the interaction between electrons gives rise to itinerant antiferromagnetism. The order can gradually be suppressed by mismatching the nesting and a quantum critical point is obtained as the N eel temperature tends to zero. We review our results on the specific heat, the quasi-particle linewidth, the electrical resistivity, the amplitudes of de Haas-van Alphen oscillations and the dynamical spin susceptibility.

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