title: Temperature-dependent fermi gap opening in the c(6x4)-C60/Ag(100) two-dimensional superstructure.
abstract: High-resolution angle-integrated photoemission of one monolayer of C (60) chemisorbed on Ag(100) shows the reversible opening of a gap at the Fermi level at temperatures 25< or =T< or =300 K. The gap reaches a maximum value of approximately 10 meV at T< or =70 K. This finding is the first evidence of an electronic phase transition in C60 monolayers and has implications on the ongoing debate about surface superconductivity in C60-based bulk materials.
authors: Laboratorio Nazionale TASC-INFM, Trieste, Italy.
authors: C
authors: C
authors: Cepek
authors: I
authors: I
authors: Vobornik
authors: A
authors: A
authors: Goldoni
authors: E
authors: E
authors: Magnano
authors: G
authors: G
authors: Selvaggi
authors: J
authors: J
authors: Kröger
authors: G
authors: G
authors: Panaccione
authors: G
authors: G
authors: Rossi
authors: M
authors: M
authors: Sancrotti