Multiband one-dimensional electronic structure and spectroscopic signature of Tomonaga-Luttinger liquid behavior in K2Cr3As3

M. D. Watson, Y. Feng, C. W. Nicholson, C. Monney, J. M. Riley, H. Iwasawa, K. Refson, V. Sacksteder, D. T. Adroja, J. Zhao, M. Hoesch

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

We present angle-resolved photoemission spectroscopy measurements of the quasi-one-dimensional superconductor K2Cr3As3. We find that the Fermi surface contains two Fermi surface sheets, with linearly dispersing bands not displaying any significant band renormalizations. The one-dimensional band dispersions display a suppression of spectral intensity approaching the Fermi level according to a linear power law, over an energy range of ∼200 meV. This is interpreted as a signature of Tomonoga-Luttinger liquid physics, which provides a new perspective on the possibly unconventional superconductivity in this family of compounds.

Original languageEnglish
Article number097002
Number of pages6
JournalPhysical Review Letters
Volume118
Issue number9
DOIs
Publication statusPublished - 3 Mar 2017

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