Emergent Nodal Excitations due to the Coexistence of Superconductivity and Antiferromagnetism: Cases with and without Inversion Symmetry

Abstract

We argue the emergence of nodal excitations due to the coupling with static antiferromagnetic order in fully-gapped superconducting states in both cases with and without inversion symmetry. This line node structure is not accompanied with the sign change of the superconducting gap, in contrast to usual unconventional Cooper pairs with higher angular momenta. In the case without inversion symmetry, the stability of the nodal excitations crucially depends on the direction of the antiferromagnetic staggered magnetic moment. A possible realization of this phenomenon in CePt${}_3$Si is discussed.

4 pages, 7 figures

Cited by in corpus (17)

• Spin Triplet Superconducting State due to Broken Inversion Symmetry in Li_2Pt_3B
• Electron Correlation and Pairing States in Superconductors without Inversion Symmetry
• Superconductivity and Magnetism in Non-centrosymmetric System: Application to CePt_3Si
• Spontaneous multipole ordering by local parity mixing
• Magnetic Properties in Non-centrosymmetric Superconductors with and without Antiferromagnetic Order
• Symmetry protected line nodes in non-symmorphic magnetic space groups: Applications to UCoGe and UPd${}_2$Al${}_3$
• Enhanced triplet superconductivity in noncentrosymmetric systems
• Mechanism of antisymmetric spin polarization in centrosymmetric multiple-$Q$ magnets based on bilinear and biquadratic spin cross products
• 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
• 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
• Superconducting properties of the noncentrosymmetric superconductor TaOs
• Using Josephson junctions to determine the pairing state of superconductors without crystal inversion symmetry
• Odd-Parity Spin-Triplet Superconductivity in Centrosymmetric Antiferromagnetic Metals
• Pressure induced superconductivity in a CeRhSi${}_3$ single crystal -- the high pressure study
• Uniform and Staggered electric axial moment in zigzag chain