title: Muon-spin-rotation measurements of the penetration depth of the infinite-layer electron-doped Sr0.9La0.1CuO2 cuprate superconductor.
abstract: Muon-spin-rotation (muSR) measurements of the in-plane penetration depth lambda(ab) have been performed in the infinite-layer electron-doped Sr0.9La0.1CuO2 high-T(c) superconductor (HTS). Absence of the magnetic rare-earth ions in this compound allowed us to measure for the first time the absolute value of lambda(ab)(0) in electron-doped HTSs using muSR. We found lambda(ab)(0)=116(2) nm. The zero-temperature depolarization rate sigma(0) proportional, variant 1/lambda(2)(ab)(0)=4.6(1) micros(-1) is more than 4 times higher than expected from the Uemura line. Therefore, this electron-doped HTS does not follow the Uemura relation found for hole-doped HTSs.
authors.affiliation: Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
authors.forename: A
authors.initials: A
authors.lastname: Shengelaya
authors.forename: R
authors.initials: R
authors.lastname: Khasanov
authors.forename: D G
authors.initials: DG
authors.lastname: Eshchenko
authors.forename: D
authors.initials: D
authors.lastname: Di Castro
authors.forename: I M
authors.initials: IM
authors.lastname: Savić
authors.forename: M S
authors.initials: MS
authors.lastname: Park
authors.forename: K H
authors.initials: KH
authors.lastname: Kim
authors.forename: Sung-Ik
authors.initials: SI
authors.lastname: Lee
authors.forename: K A
authors.initials: KA
authors.lastname: Müller
authors.forename: H
authors.initials: H
authors.lastname: Keller