title: Electric-field-effect modulation of the transition temperature, mobile carrier density, and in-plane penetration depth of NdBa2Cu3O7-delta thin films.
abstract: We explore the relationship between the critical temperature T(c), the mobile areal carrier density n(2D), and the zero-temperature magnetic in-plane penetration depth lambda(ab)(0) in very thin underdoped NdBa(2)Cu(3)O(7-delta) films near the superconductor to insulator transition using the electric-field-effect technique. Having established consistency with a Kosterlitz-Thouless transition, we observe that T(KT) depends linearly on n(2D), the signature of a quantum superconductor to insulator transition in two dimensions with znu(over)=1, where z is the dynamic and nu is the critical exponent of the in-plane correlation length.
authors.affiliation: DPMC, University of Geneva, 24 quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
authors.forename: D
authors.initials: D
authors.lastname: Matthey
authors.forename: N
authors.initials: N
authors.lastname: Reyren
authors.forename: J-M
authors.initials: JM
authors.lastname: Triscone
authors.forename: T
authors.initials: T
authors.lastname: Schneider