Multiband One-Dimensional Electronic Structure and Spectroscopic Signature of Tomonaga-Luttinger Liquid Behavior in K2Cr3As3

Matthew Watson, Y Feng, C Nicholson, C Monney, J Riley, H Iwasawa, Keith Refson, Vincent Sacksteder , D Adroja, J Zhao, Moritz Hoesch

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We present Angle-Resolved Photoemission Spectroscopy measurements of the quasi-one dimensional super-conductor K2 Cr3As3 . 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
Pages (from-to)1-6
Number of pages6
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 1 Mar 2017

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