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arXiv · 1101.1221

Nematic Quantum Criticality Without Order

Hiroyuki Yamase·Pawel Jakubczyk·Walter Metzner
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Abstract

We consider a two-dimensional interacting Fermi system which displays a nematic phase within mean-field theory. The system is analyzed using a non-perturbative renormalization-group scheme. We find that order-parameter fluctuations can suppress the nematic order obtained in mean-field theory even at zero temperature. For a suitable choice of parameters a quantum critical point surrounded by a disordered phase can be realized, giving rise to quantum critical behavior in the absence of an ordered regime in the phase diagram.

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Hiroyuki Yamase, Pawel Jakubczyk, Walter Metzner. 2011-01-06. Nematic Quantum Criticality Without Order. https://doi.org/10.1103/physrevb.83.125121

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