[Zurück]

E. Bauer, H. Kaldarar, A. Prokofiev, E. Royanian, A. Amato, J.G. Sereni, W. Brämer-Escamilla, I. Bonalde:
"Heavy Fermion Superconductivity and Antiferromagnetic Ordering in CePt₃Si without Inversion Symmetry";
Journal of the Physical Society of Japan, 76 (2007), 5; S. 051009-1 - 051009-15.

Heavy Fermion Superconductivity and Antiferromagnetic Ordering in CePt₃Si without Inversion Symmetry

Ernst Bauer*, Heinich Kaldarar, Andry Prokofiev, Esmael Royanian, Alex Amato 1, Julian Sereni 2, Werner Brämer-Escamilla 3, and Ismardo Bonalde 3
Institute of Solid State Physics, Vienna University of Technology, A-1040 Wien, Austria
1 Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
2 Lab. Bajas Temperaturas, Centro Atómico Bariloche (CNEA), 8400 S.C. de Bariloche, Argentina
3 Centro de Física, Instituto Venezolano de Investigaciones Científicas, Apartado 21874, Caracas 1020-A, Venezuela

Heavy fermion superconductivity in absence of inversion symmetry of the crystal structure is basically controlled by a Rashba-like antisymmetric spin orbit coupling which splits the Fermi surface and removes the spin degeneracy of electrons. The Fermi surface splitting originates a mixing of spin-singlet and spin-triplet states in the superconducting condensate. Such constraints are responsible for various uncommon features of the superconducting ground state and are discussed here in view of CePt₃Si, the first heavy fermion superconductor missing a centre of symmetry. We recall and discuss normal and superconducting properties of CePt₃Si and relate them to recently developed phenomenological theories.

KEYWORDS: CePt₃Si, superconductivity, long range magnetic order

*E-mail: bauer@ifp.tuwien.ac.at

CePt₃Si, superconductivity, long range magnetic order

http://dx.doi.org/10.1143/JPSJ.76.051009

http://jpsj.ipap.jp/link?JPSJ/76/051009