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تسجيل مستخدم جديدSuperconductivity and non-Fermi liquid behavior near a nematic quantum critical point
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Using determinantal quantum Monte Carlo, we compute the properties of a lattice model with spin $frac 1 2$ itinerant electrons tuned through a quantum phase transition to an Ising nematic phase. The nematic fluctuations induce superconductivity with a broad dome in the superconducting $T_c$ enclosing the nematic quantum critical point. For temperatures above $T_c$, we see strikingly non-Fermi liquid behavior, including a nodal - anti nodal dichotomy reminiscent of that seen in several transition metal oxides. In addition, the critical fluctuations have a strong effect on the low frequency optical conductivity, resulting in behavior consistent with bad metal phenomenology.
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