Journal article

Mapping of electron-Hole excitations in the charge-density-wave system 1T-TiSe2 using resonant inelastic x-ray scattering

  • Monney, Claude Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, Villigen PSI, Switzerland
  • Zhou, K. J. Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, Villigen PSI, Switzerland - Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, United Kingdom
  • Cercellier, H. Institut Néel, CNRS-UJF, Grenoble, France
  • Vydrova, Z. Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Garnier, Michael G. Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Monney, Gaël Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Strocov, V. N. Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, Villigen PSI, Switzerland
  • Berger, Helmuth EPFL, Institut de Physique de la Matière Condensée, Lausanne, Switzerland
  • Beck, Hans Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
  • Schmitt, T. Research Department Synchrotron Radiation and Nanotechnology, Paul Scherrer Institut, Villigen PSI, Switzerland
  • Aebi, Philipp Département de Physique and Fribourg Center for Nanomaterials, Université de Fribourg, Switzerland
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    24.07.2012
Published in:
  • Physical Review Letters. - 2012, vol. 109, p. 047401
English In high-resolution resonant inelastic x-ray scattering at the Ti L edge of the charge-density-wave system 1T-TiSe₂, we observe sharp low energy loss peaks from electron-hole pair excitations developing at low temperature. These excitations are strongly dispersing as a function of the transferred momentum of light. We show that the unoccupied bands close to the Fermi level can effectively be probed in this broadband material. Furthermore, we extract the order parameter of the charge-density-wave phase from temperature-dependent measurements.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/302442
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