We measured typical quasi-one-dimensional organic metals (Bechgaard salts), using high resolution angle-resolved photoemission spectroscopy. We observe neither quasiparticle features near the chemical potential nor traces of a Fermi surface. The spectra, indicating a deep pseudogap around the Fermi energy, are incompatible with a Fermi liquid picture. None of the alternative interpretations we explored can fully explain the experimental data.
Title
Absence of quasiparticles in the photoemission spectra of quasi-one-dimensional Bechgaard salts
Published in
Physical Review Letters
Volume
79
Issue
20
Pages
3982-3985
Date
1997
ISSN
0031-9007
Note
Univ calif los angeles,dept phys,los angeles,ca 90095. univ calif los angeles,dept chem,los angeles,ca 90095. univ wisconsin,dept phys,madison,wi 53706. univ bayreuth,d-95440 bayreuth,germany. Zwick, F, ECOLE POLYTECH FED LAUSANNE,INST PHYS APPL,CH-1015 LAUSANNE,SWITZERLAND.
ISI Document Delivery No.: YF786
Record creation date
2006-10-03