title: Extremely small energy gap in the quasi-one-dimensional conducting chain compound SrNbO3.41.
abstract: Resistivity, optical, and angle-resolved photoemission experiments reveal unusual one-dimensional electronic properties of highly anisotropic SrNbO3.41. Along the conducting chain direction, we find an extremely small energy gap of only a few meV at the Fermi level. A discussion in terms of typical 1D instabilities (Peierls, Mott-Hubbard) shows that neither seems to provide a satisfactory explanation for the unique properties of SrNbO3.41.
authors.affiliation: Forschungszentrum Karlsruhe, Institut für Festkörperphysik, D-76021 Karlsruhe, Germany.
authors.forename: C A
authors.initials: CA
authors.lastname: Kuntscher
authors.forename: S
authors.initials: S
authors.lastname: Schuppler
authors.forename: P
authors.initials: P
authors.lastname: Haas
authors.forename: B
authors.initials: B
authors.lastname: Gorshunov
authors.forename: M
authors.initials: M
authors.lastname: Dressel
authors.forename: M
authors.initials: M
authors.lastname: Grioni
authors.forename: F
authors.initials: F
authors.lastname: Lichtenberg
authors.forename: A
authors.initials: A
authors.lastname: Herrnberger
authors.forename: F
authors.initials: F
authors.lastname: Mayr
authors.forename: J
authors.initials: J
authors.lastname: Mannhart