Field-induced spin exciton doublet splitting in dx2−y2-wave CeMIn5(M=Rh,Ir,Co) heavy-electron superconductors
Alireza Akbari, Peter Thalmeier
DOI 10.1103/PhysRevB.86.134516 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We investigate the spin exciton modes in the superconducting dx2−y2 state of CeMIn5 heavy-fermion compounds found at the antiferromagnetic wave vector by inelastic neutron scattering. We present a theoretical model that explains the field dependence for both field directions. We show that the recently observed splitting of the spin exciton doublet in CeCoIn5 into two nondegenerate modes for an in-plane field appears naturally in this model. This is due to the spin anisotropy of g factors and quasiparticle interactions, which lead to different resonant conditions for the dynamic susceptibility components. We predict that the splitting of the spin-resonance doublet becomes strongly nonlinear for larger fields when the energy of both split components decreases. For a field along the tetragonal axis, no splitting but only a broadening of the resonance is found in agreement with the experiment.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeCoIn5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.3 | Pressure not reported | unknown |
Similar papers
Angle-resolved and resonant photoemission spectroscopy on heavy-fermion superconductors Ce2CoIn8 and Ce2RhIn8
similarity 0.95S. Raj et al.
Source status unknown — claims are unverified
Magnetotransport properties governed by antiferromagnetic fluctuations in the heavy-fermion superconductor CeIrIn5
similarity 0.95Y. Nakajima et al.
Source status unknown — claims are unverified
Evidence of d-wave pairing symmetry of the gap of the heavy-fermion superconductor CeIrIn5 from magnetic-penetration-depth measurements
similarity 0.95D. Vandervelde et al.
Source status unknown — claims are unverified
Tandem Pairing in Heavy-Fermion Superconductors
similarity 0.95Rebecca Flint & Piers Coleman
Source status unknown — claims are unverified
Paramagnetic effects in vortex lattice field distribution in strongly type-II superconductors
similarity 0.94V. P. Michal & V. P. Mineev
Source status unknown — claims are unverified
Exotic heavy-fermion superconductivity in atomically thin CeCoIn5 films
similarity 0.94L. Peng et al.
Source status unknown — claims are unverified