Quasiparticle resonance states around a magnetic impurity in a two-dimensional f-wave superconductor
Xian-Jun Zuo, Jin An, Chang-De Gong
DOI 10.1103/PhysRevB.77.144512 · Physical Review B
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Abstract
An investigation of the resonance states induced by a magnetic impurity in two-dimensional f-wave superconductors (2D FSCs) near 1∕3 filling is reported in this paper. Based on the t−t′−J−V model, the competitions and coexistence among the charge order, spin order, and f-wave superconducting order are studied by self-consistently solving the Bogoliubov–de Gennes equations. Surprisingly, for the spin order, local ferromagnetism is induced in both sublattices while the coupling between the two sublattices is antiferromagnetic. Moreover, the calculated local density of states shows that above a critical effective field, a localized resonance state is created at the impurity site. Further experiments of magnetic impurity substitution in 2D FSCs are expected to check these predictions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| NaxCoO2.yH2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure not reported | onset |
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