Nodeless superconductivity in the infinite-layer electron-doped Sr_0.9La_0.1CuO_2 cuprate superconductor

Authors :: Khasanov, R.
Shengelaya, A.
Maisuradze, A.
Di Castro, D.
Savić, I. M.
Weyeneth, S.
Park, M. S.
Jang, D. J.
Lee, S. -I.
Keller, H.
Source :: Phys. Rev. B 77, 184512 (2008)
Publication Year :: 2008
Abstract: We report on measurements of the in-plane magnetic penetration depth \lambda_{ab} in the infinite-layer electron-doped high-temperature cuprate superconductor Sr_0.9La_0.1CuO_2 by means of muon-spin rotation. The observed temperature and magnetic field dependences of \lambda_{ab} are consistent with the presence of a substantial s-wave component in the superconducting order parameter in good agreement with the results of tunneling, specific heat, and small-angle neutron scattering experiments.<br />Comment: 6 pages, 5 figures

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