title: Finite-size effects: hydrogen in Fe/V(001) superlattices.
abstract: We investigate the effect of finite size on phase boundaries of hydride formation in ultrathin metallic films, using Fe/V(001) superlattices as a model system. The critical temperature is determined to scale linearly with the inverse thickness of the V layers. The decrease of the ordering temperature with decreasing layer thickness arises from the missing H neighbors at the interfaces, analogous to observed finite-size effects in magnetic layers and nanosized ice crystals.
authors.affiliation: Division of Materials Physics, Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
authors.forename: Xiao
authors.initials: X
authors.lastname: Xin
authors.affiliation: Division of Materials Physics, Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
authors.forename: Gunnar K
authors.initials: GK
authors.lastname: Pálsson
authors.affiliation: Division of Materials Physics, Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
authors.forename: Max
authors.initials: M
authors.lastname: Wolff
authors.affiliation: Division of Materials Physics, Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.
authors.forename: Björgvin
authors.initials: B
authors.lastname: Hjörvarsson