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Strong-coupling d-wave superconductivity in PuCoGa.sub.5./sub. probed by point-contact spectroscopy

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    0383996 - FZÚ 2013 RIV GB eng J - Journal Article
    Daghero, D. - Tortello, M. - Ummarino, G.A. - Griveau, J.C. - Colineau, E. - Eloirdi, R. - Shick, Alexander - Kolorenč, Jindřich - Lichtenstein, A.I. - Caciuffo, R.
    Strong-coupling d-wave superconductivity in PuCoGa5 probed by point-contact spectroscopy.
    Nature Communications. Roč. 3, Apr (2012), "786-1"-"786-8". E-ISSN 2041-1723
    R&D Projects: GA ČR(CZ) GAP204/10/0330; GA AV ČR IAA100100912
    Institutional research plan: CEZ:AV0Z10100520
    Keywords : superconductivity * PuCoGa5 * magnetism
    Subject RIV: BM - Solid Matter Physics ; Magnetism
    Impact factor: 10.015, year: 2012
    http://www.nature.com/ncomms/journal/v3/n4/full/ncomms1785.html

    We report on point-contact spectroscopy measurements in PuCoGa5, a moderate heavy-fermion superconductor with a record high critical temperature Tc = 18.5 K. The results prove that the wavefunction of the paired electrons has a d-wave symmetry, with four lobes and nodes, and show that the pairing is likely to be mediated by spin fluctuations. Electronic structure calculations, which take into account the full structure of the f-orbital multiplets of Pu, provide a hint of the possible origin of these fluctuations.
    Permanent Link: http://hdl.handle.net/11104/0213768

     
     
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