New Journal of Physics (Jan 2023)

Probing a Bose metal via electrons: inescapable non-Fermi liquid scattering and pseudogap physics

  • Xinlei Yue(岳辛磊),
  • Anthony Hegg,
  • Xiang Li(李翔),
  • Wei Ku(顧威)

DOI
https://doi.org/10.1088/1367-2630/acce5b
Journal volume & issue
Vol. 25, no. 5
p. 053007

Abstract

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Non-Fermi liquid behavior and pseudogap formation are among the most well-known examples of exotic spectral features observed in several strongly correlated materials such as the hole-doped cuprates, nickelates, iridates, ruthenates, ferropnictides, doped Mott organics, transition metal dichalcogenides, heavy fermions, d - and f -electron metals, etc. We demonstrate that these features are inevitable consequences when fermions couple to an unconventional Bose metal (Hegg et al 2021 Proc. Natl. Acad. Sci. 118 ) mean field consisting of lower-dimensional coherence. Not only do we find both exotic phenomena, but also a host of other features that have been observed e.g. in the cuprates including nodal anti-nodal dichotomy and pseudogap asymmetry (symmetry) in momentum (real) space. Obtaining these exotic and heretofore mysterious phenomena via a mean field offers a simple, universal, and therefore widely applicable explanation for their ubiquitous empirical appearance.

Keywords