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Disorder quenching of the charge density wave in ZrTe3

DOI: 10.1103/PhysRevLett.122.017601 DOI Help

Authors: Moritz Hoesch (Diamond Light Source) , Liam Gannon (Diamond Light Source; University of Oxford) , Kenya Shimada (Hiroshima Synchrotron Radiation Center, Hiroshima University) , Benjamin J. Parrett (Diamond Light Source; University College London) , Matthew D. Watson (Diamond Light Source) , Timur K. Kim (Diamond Light Source) , Xiangde Zhu (Brookhaven National Laboratory) , Cedomir Petrovic (Brookhaven National Laboratory)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physical Review Letters , VOL 122

State: Published (Approved)
Published: January 2019
Diamond Proposal Number(s): 8776 , 11039 , 13797 , 17065

Abstract: The charge density wave (CDW) in ZrTe3 is quenched in samples with a small amount of Te isoelectronically substituted by Se. Using angle-resolved photoemission spectroscopy we observe subtle changes in the electronic band dispersions and Fermi surfaces upon Se substitution. The scattering rates are substantially increased, in particular for the large three-dimensional Fermi surface sheet. The quasi-one-dimensional band is unaffected by the substitution and still shows a gap at low temperature, which starts to open from room temperature. Long-range order is, however, absent in the electronic states as in the periodic lattice distortion. The competition between superconductivity and the CDW is thus linked to the suppression of long-range order of the CDW.

Keywords: Band gap; Charge density waves; Electron-phonon coupling; Fermi surface; Impurities in superconductors; Multiband superconductivity; Nesting; Peierls transition; Superconducting phase transition; Superconductivity

Subject Areas: Physics, Materials

Beamlines: I05-ARPES , I19-Small Molecule Single Crystal Diffraction