title: Two-dimensional magnetic and superconducting phases in metal-insulator La(2-x)Sr(x)CuO(4) superlattices measured by muon-spin rotation.
abstract: We show, by means of low-energy muon-spin rotation measurements, that few-unit-cells thick La(2)CuO(4) layers synthesized digitally by molecular beam epitaxy are antiferromagnetically ordered. Below a thickness of about 5 CuO(2) layers the long-range ordered state breaks down, and a magnetic state appears with enhanced quantum fluctuations and a reduced spin stiffness. This magnetic state can exist in close proximity (few Å) to high-temperature superconducting layers, without transmitting supercurrents.
authors.affiliation: Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland. andreas.suter@psi.ch
authors.forename: A
authors.initials: A
authors.lastname: Suter
authors.forename: E
authors.initials: E
authors.lastname: Morenzoni
authors.forename: T
authors.initials: T
authors.lastname: Prokscha
authors.forename: B M
authors.initials: BM
authors.lastname: Wojek
authors.forename: H
authors.initials: H
authors.lastname: Luetkens
authors.forename: G
authors.initials: G
authors.lastname: Nieuwenhuys
authors.forename: A
authors.initials: A
authors.lastname: Gozar
authors.forename: G
authors.initials: G
authors.lastname: Logvenov
authors.forename: I
authors.initials: I
authors.lastname: Božović