期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：2017
卷号：114
期号：19
页码：4905-4910
DOI：10.1073/pnas.1620651114
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Using determinantal quantum Monte Carlo, we compute the properties of a lattice model with spin 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–antinodal 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.
