Non-Fermi Glasses: Localized Descendants of Fractionalized Metals

S. A. Parameswaran, S. Gopalakrishnan

Research output: Contribution to journalArticlepeer-review

Abstract

Non-Fermi liquids are metals that cannot be adiabatically deformed into free fermion states. We argue for the existence of "non-Fermi glasses," phases of interacting disordered fermions that are fully many-body localized (MBL), yet cannot be deformed into an Anderson insulator without an eigenstate phase transition. We explore the properties of such non-Fermi glasses, focusing on a specific solvable example. At high temperature, non-Fermi glasses have qualitatively similar spectral features to Anderson insulators. We identify a diagnostic based on ratios of correlators that sharply distinguishes between the two phases even at infinite temperature. Our results and diagnostic should generically apply to the high-temperature behavior of MBL descendants of fractionalized phases.

Original languageEnglish (US)
Article number146601
JournalPhysical review letters
Volume119
Issue number14
DOIs
StatePublished - Oct 4 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Non-Fermi Glasses: Localized Descendants of Fractionalized Metals'. Together they form a unique fingerprint.

Cite this