Critical charge fluctuations and emergent coherence in a strongly correlated excitonic insulator
Abstract
Excitonic insulator is a coherent electronic phase that results from the formation of a macroscopic population of bound particle-hole pairs—excitons. With only a few candidate materials known, the collective excitonic behavior is challenging to observe, being obscured by crystalline lattice effects. Here we use polarization-resolved Raman spectroscopy to reveal the quadrupolar excitonic mode in the candidate zero-gap semiconductor Ta2NiSe5...
Paper Details
Title
Critical charge fluctuations and emergent coherence in a strongly correlated excitonic insulator
Published Date
May 25, 2021
Journal
Volume
6
Issue
1
Pages
52
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