Non-centrosymmetric Superconductivity and Antiferromagnetic Order: Microscopic discussion of CePt${}_3$Si

Abstract

The influence of antiferromagnetic order on the superconductivity in the non-centrosymmetric heavy fermion compound CePt${}_3$Si and related materials is discussed. Based on our RPA analysis for the extended Hubbard model two phases could be stabilized by a spin fluctuation induced pairing, with either dominantly p-wave or d-wave symmetry. The antiferromagnetic order plays an essential role for the low-energy physics, in particular, for the appearance of line nodes in the gap and the enhancement of spin susceptibility below $T_{\mathrm{c}}$. Various properties and possible phase diagrams under pressure are analyzed. The present experimental situation suggests that the p-wave phase is most likely realized in CePt${}_3$Si.

To appear in J. Phys. Soc. Jpn. Vol.76 (2007) No.4

References in corpus (1)

• Interlayer spin-singlet pairing induced by magnetic interactions in an antiferromagnetic superconductor

Cited by in corpus (12)

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• Superconductivity and Magnetism in Non-centrosymmetric System: Application to CePt_3Si
• Magnetic Properties in Non-centrosymmetric Superconductors with and without Antiferromagnetic Order
• FFLO Superconductivity near the Antiferromagnetic Quantum Critical Point
• Enhanced triplet superconductivity in noncentrosymmetric systems
• Charge current driven by spin dynamics in disordered Rashba spin-orbit system
• Microscopic Mechanism and Pairing Symmetry of Superconductivity in the Noncentrosymmetric Heavy Fermion Systems CeRhSI${}_3$ and CeIrSi${}_3$
• Impurity resonance states in noncentrosymmetric superconductor $CeP{t}_{3}Si$: a probe for Cooper-pairing symmetry
• Anomalous Spin Response in Non-centrosymmetric Compounds
• Theory of Fulde-Ferrell-Larkin-Ovchinnikov state of superconductors with and without inversion symmetry: Hubbard model approach
• Specific Heat Study of Magnetic and Superconducting Transitions in CePt3Si
• AC/DC Susceptibility of the Heavy-Fermion Superconductor CePt3Si under Pressure