Heavy fermion superconductivity and antiferromagnetic ordering in CePt <inf>3</inf>Si without inversion symmetry

Abstract:

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. ©2007 The Physical Society of Japan.

Año de publicación:

2007

Keywords:

• Superconductivity
• Long range magnetic order
• CePt Si 3

Fuente:

scopus

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