Identification of Non-unitary triplet pairing in a heavy Fermion superconductor UPt_3

Abstract

A NMR experiment recently done by Tou et al. on a heavy Fermion superconductor UPt${}_3$ is interpreted in terms of a non-unitary spin-triplet pairing state which we have been advocating. The proposed state successfully explains various aspects of the seemingly complicated Knight shift behaviors probed for major orientations, including a remarkable d-vector rotation under weak fields. This entitles UPt${}_3$ as the first example that a charged many body system forms a spin-triplet odd-par ity pairing at low temperatures and demonstrates unambiguously that the putative spin-orbit coupling in UPt${}_3$ is weak.

arXiv comment4 pages, 2 eps figures, to be published in J. Phys. Soc. Jpn. 67 (1998) No.4

References in corpus (3)

• Phase diagram of UPt${}_3$ in the $E_{1g}$ model
• Transverse Sound Revisited: A Directional Probe of the A-Phase of $UP{t}_3$
• Influence of a magnetic field on the antiferromagnetic order in UPt_3

Cited by in corpus (19)

• Evaluation of Spin-Triplet Superconductivity in Sr2RuO4
• Theory of Superconductivity in Strongly Correlated Electron Systems
• Dual neutral variables and knot solitons in triplet superconductors
• Spin domain formation in spinor Bose-Einstein condensation
• Microscopic Identification of the D-vector in Triplet Superconductor Sr_2RuO_4
• Identification of the Orbital Pairing Symmetry in UPt_3
• Quantum polarization spectroscopy of ultracold spinor gases
• Magnetic skyrmions and their lattices in triplet superconductors
• Magnetic skyrmion lattices in heavy fermion superconductor UPt3
• Theory of spin-polarized superconductors -- an analogue of superfluid ${}^3$He A-phase
• Non-unitary triplet superconductivity tuned by field-controlled magnetization --URhGe, UCoGe and UTe${}_2$--
• Positive Muon Knight Shift Measurements in U_{0.965}Th_{0.035}Be_{13} Single Crystals
• Nonunitary Superconductivity in Complex Quantum Materials
• Josephson Current between Triplet and Singlet Superconductors
• Anomalous Field-Angle Dependence of the Specific Heat of Heavy-Fermion Superconductor UPt3
• Clear Reduction in Spin Susceptibility and Superconducting Spin Rotation for $H\parallel a$ in the Early-Stage Sample of Spin-Triplet Superconductor UTe${}_2$
• Magnetic Field Effects on Neutron Diffraction in the Antiferromagnetic Phase of $UP{t}_3$
• Non-unitary multiorbital superconductivity from competing interactions in Dirac materials
• Orbital symmetry of a triplet pairing in a heavy Fermion superconductor UPt_3