Superconductivity and non-Fermi liquid behavior near a nematic quantum critical point
Name
Superconductivity and non-Fermi liquid behavior near a nematic quantum critical point
Size
4.59 MB
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Unknown
Checksum (MD5)
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Author(s)
Lederer, Samuel
Schattner, Yoni
Berg, Erez
Kivelson, Steven A.
Date Issued
April 2017
Journal
Proceedings of the National Academy of Sciences
Publisher
National Academy of Sciences (U.S.)
Citation
Lederer, Samuel et al. “Superconductivity and Non-Fermi Liquid Behavior Near a Nematic Quantum Critical Point.” Proceedings of the National Academy of Sciences 114, 19 (April 2017): 4905–4910 © 2017 National Academy of Sciences
Version
Final published version
Abstract
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[subscript c] enclosing the nematic quantum critical point. For temperatures above T[subscript 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 lowfrequency optical conductivity, resulting in behavior consistent with "bad metal" phenomenology. Keywords: superconductivity; non-Fermi liquid; quantum criticality
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1073/pnas.1620651114
