title: Multiband One-Dimensional Electronic Structure and Spectroscopic Signature of Tomonaga-Luttinger Liquid Behavior in K_{2}Cr_{3}As_{3}.
abstract: We present angle-resolved photoemission spectroscopy measurements of the quasi-one-dimensional superconductor K_{2}Cr_{3}As_{3}. 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.
authors.affiliation: Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom.
authors.forename: M D
authors.initials: MD
authors.lastname: Watson
authors.affiliation: State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Feng
authors.affiliation: Department of Physical Chemistry, Fritz-Haber-Institut of the Max Planck Society, Faradayweg 4-6, Berlin 14915, Germany.
authors.forename: C W
authors.initials: CW
authors.lastname: Nicholson
authors.affiliation: Department of Physics, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
authors.forename: C
authors.initials: C
authors.lastname: Monney
authors.affiliation: Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom.|SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife KY16 9SS, United Kingdom.
authors.forename: J M
authors.initials: JM
authors.lastname: Riley
authors.affiliation: Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom.
authors.forename: H
authors.initials: H
authors.lastname: Iwasawa
authors.affiliation: Department of Physics, Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom.|ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom.
authors.forename: K
authors.initials: K
authors.lastname: Refson
authors.affiliation: Department of Physics, Royal Holloway, University of London, Egham, Surrey TW20 0EX, United Kingdom.
authors.forename: V
authors.initials: V
authors.lastname: Sacksteder
authors.affiliation: ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom.|Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, P.O. Box 524, Auckland Park 2006, South Africa.
authors.forename: D T
authors.initials: DT
authors.lastname: Adroja
authors.affiliation: State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
authors.forename: J
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Diamond Light Source, Harwell Campus, Didcot, OX11 0DE, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: Hoesch