Excitations in antiferromagnetic cores of superconducting vortices
Henrik Bruus, Kasper Astrup Eriksen, Michael Hallundbæk, Per Hedegård
DOI 10.1103/PhysRevB.59.4349 · 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 study excitations of the predicted antiferromagnetically ordered vortex cores in the superconducting phase of the newly proposed SO(5) model of strongly correlated electrons. Using experimental data from the literature we show that the susceptibilities in the spin sector and the charge sector are nearly equal, and likewise for the stiffnesses. In the case of strict equality SO(5) symmetry is possible, and we find that if present the vortices give rise to an enhanced neutron scattering cross section near the so called π resonance at 41 meV. In the case of broken SO(5) symmetry two effects are predicted. Bound excitations can exist in the vortex cores with “high” excitation energies slightly below 41 meV, and the massless Goldstone modes corresponding to the antiferromagnetic ordering of the core can acquire a mass and show up as core excitation with “low” excitation energies around 2 meV.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Neutron diffraction from the vortex lattice in the heavy-fermion superconductor UPt3
similarity 0.97R. N. Kleiman et al.
Source status unknown — claims are unverified
Indication for an antiferromagnetic exchange interaction in high-Tc superconductors
similarity 0.97T. Dahm
Source status unknown — claims are unverified
Influence of quenched disorder on the square-to-rhombohedral structural transformation of the vortex lattice of type-II superconductors
similarity 0.97D. P. Li et al.
Source status unknown — claims are unverified
Vortex lattice transition in d-wave superconductors
similarity 0.97Jun’ichi Shiraishi et al.
Source status unknown — claims are unverified
Electronic Spectra and Their Relation to the (π,π) Collective Mode in High- Tc Superconductors
similarity 0.97J. C. Campuzano et al.
Source status unknown — claims are unverified
Coexistence of magnetism and superconductivity in a t−J bilayer
similarity 0.96Amal Medhi et al.
Source status unknown — claims are unverified