title: Fluctuations and phase separation in a quasi-one-dimensional system.
abstract: Phase transitions in a quasi-one-dimensional surface system on a metal substrate are investigated as a function of temperature. Upon cooling the system shows a loss of long-range order, fluctuations, and a transition into an inhomogeneous ground state due to competition of local adsorbate-adsorbate interactions with an incommensurate charge density wave. This agrees with a general phase diagram for correlated systems and high-temperature superconductors. The model surface system allows direct imaging of the fluctuations and the glassy inhomogeneous ground state by scanning tunneling microscopy.
authors.affiliation: Institute of Physical Chemistry, University of Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria.
authors.forename: Enrico
authors.initials: E
authors.lastname: Doná
authors.forename: Thomas
authors.initials: T
authors.lastname: Loerting
authors.forename: Simon
authors.initials: S
authors.lastname: Penner
authors.forename: Mariana
authors.initials: M
authors.lastname: Minca
authors.forename: Alexander
authors.initials: A
authors.lastname: Menzel
authors.forename: Erminald
authors.initials: E
authors.lastname: Bertel
authors.forename: Johannes
authors.initials: J
authors.lastname: Schoiswohl
authors.forename: Steven
authors.initials: S
authors.lastname: Berkebile
authors.forename: Falko P
authors.initials: FP
authors.lastname: Netzer
authors.forename: Rinaldo
authors.initials: R
authors.lastname: Zucca
authors.forename: Josef
authors.initials: J
authors.lastname: Redinger