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Fermi-liquid line shapes measured by angle-resolved photoemission spectroscopy on 1- T -TiTe sub 2

Journal Article · · Physical Review Letters; (United States)
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  1. Randall Laboratory, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)
  2. Ames Laboratory and Iowa State University, Ames, Iowa 50011 (United States)
  3. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  4. Institut fuer Experimentalphysik, Universitaet Kiel, W-2300 Kiel 1 (Germany)
We have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) on the layered compound 1-{ital T}-TiTe{sub 2}, whose low-energy properties are those of a normal metal, and analyzed the experimental line shapes in terms of the Fermi-liquid self-energy. We find excellent agreement between the measured and theoretical spectral weight distribution, while line profiles expected for other theoretical models such as the marginal Fermi liquid clearly fail to reproduce the experimental spectra. This demonstrates that ARPES line shapes are able to reflect the nature of an interacting electron system.
DOE Contract Number:
FG02-90ER45416
OSTI ID:
7165476
Journal Information:
Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 69:5; ISSN PRLTA; ISSN 0031-9007
Country of Publication:
United States
Language:
English