Multiband one-dimensional electronic structure and spectroscopic signature of Tomonaga-Luttinger liquid behavior in K2Cr3As3
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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.
Watson , M D , Feng , Y , Nicholson , C W , Monney , C , Riley , J M , Iwasawa , H , Refson , K , Sacksteder , V , Adroja , D T , Zhao , J & Hoesch , M 2017 , ' Multiband one-dimensional electronic structure and spectroscopic signature of Tomonaga-Luttinger liquid behavior in K 2 Cr 3 As 3 ' Physical Review Letters , vol. 118 , no. 9 , 097002 . https://doi.org/10.1103/PhysRevLett.118.097002
Physical Review Letters
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