Theory of non-Fermi liquid near a diagonal electronic nematic state on a square lattice | Zendy

Ying-Jer Kao | Zendy; HaeYoung Kee | Zendy

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Theory of non-Fermi liquid near a diagonal electronic nematic state on a square lattice

Author(s) -

Ying-Jer Kao,

HaeYoung Kee

Publication year - 2007

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.76.045106

Subject(s) - condensed matter physics , square lattice , fermi liquid theory , physics , liquid crystal , diagonal , fermi surface , quantum critical point , isotropy , quantum oscillations , critical point (mathematics) , fermi level , quantum mechanics , quantum phase transition , phase transition , electron , ising model , geometry , mathematics , superconductivity

We study effects of Fermi surface fluctuations on a single-particle life timenear the diagonal electronic nematic phase on a two-dimensional square lattice.It has been shown that there exists a quantum critical point (QCP) between thediagonal nematic and isotropic phases. We study the longitudinal fluctuationsof the order parameter near the critical point, where the singular forwardscattering leads to a non-Fermi liquid behavior over the whole Fermi surfaceexcept along the k_x- and k_y-directions. We will also discuss the temperatureand chemical potential dependence of the single-particle decay rate.Comment: 4 pages, 3 figures, revtex

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