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Multiband One-Dimensional Electronic Structure and Spectroscopic Signature of Tomonaga-Luttinger Liquid Behavior in K 2 Cr 3 As 3

DOI: 10.1103/PhysRevLett.118.097002 DOI Help

Authors: Matthew D. Watson (Diamond Light Source) , Yu Feng (State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China) , Christopher Nicholson (Fritz-Haber-Institute) , Claude Monney (University of Zurich) , Jonathon Riley (University of St Andrews, U.K.) , Hideaki Iwasawa (Diamond Light Source) , Keith Refson (Department of Physics, Royal Holloway, University of London, U.K.) , Vincent Sacksteder (Department of Physics, Royal Holloway, University of London, U.K.) , Devashibhai Adroja (ISIS) , Jun Zhao (State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China) , Moritz Hoesch (Diamond Light Source)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review Letters , VOL 118 , PAGES 097002

State: Published (Approved)
Published: March 2017
Diamond Proposal Number(s): 13797 , 14572

Open Access Open Access

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.

Journal Keywords: ARPES, one-dimensional systems, K2Cr3As3

Subject Areas: Physics


Instruments: I05-ARPES

Documents:
PhysRevLett.118.pdf