Publications in Scientific Journals:

M. Yogi, Y. Kitaoka, H. Mukuda, S. Hashimoto, T. Yasuda, R. Settai, T.D. Matsuda, Y. Haga, Y. Onuki, P. Rogl, E. Bauer:
"Novel superconductivity in CePt3Si: A 29Si-NMR study";
Physica B: Condensed Matter, 378-380 (2006), 359 - 360.

English abstract:
Physica B: Condensed Matter
Volumes 378-380 , 1 May 2006, Pages 359-360
Proceedings of the International Conference on Strongly Correlated Electron Systems - SCES 2005

Copyright 2006 Elsevier B.V. All rights reserved.

Novel superconductivity in CePt3Si: A 29Si-NMR study

M. Yogi a, Y. Kitaoka a, H. Mukuda a, S. Hashimoto b, T. Yasuda b, R. Settai b, T.D. Matsuda c, Y. Haga c, Y. Onuki b, c, P. Rogl d and E. Bauer e

a Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560 8531, Japan
b Graduate School of Science, Osaka University, Toyonaka, Osaka 560 0043, Japan
c Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319 1195, Japan
d Institut für Festkörperphysik, Technische Universität Wien, A 1040 Wien, Austria
e Institut für Physikalische Chemie, Universität Wien, A 1090 Wien, Austria

Available online 17 February 2006.


We report a Knight-shift (29K) study of 29Si of the noncentrosymmetric heavy-fermion superconductor CePt3Si. The spin part of 29K is deduced to be Ks=0.13-0.18% and 0.19-0.22% at respective fields of H=2.0061 and 0.8671 T. The 29Kc for the field direction H||c-axis unchanges across Tc, suggesting that a two-component order parameter composed of spin-singlet and spin-triplet pairing components is realized.

Keywords: Heavy fermion superconductivity; Antiferromagnetism; NMR; Knight shift

PACS classification codes: 74.70.Tx; 74.20.Rp; 76.30.−k; 76.60.Cp

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