Impurity-induced resonant state in a pseudogap state of a high-Tc superconductor
H. V. Kruis, I. Martin, A. V. Balatsky
DOI 10.1103/PhysRevB.64.054501 · Physical Review B
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Abstract
We predict a resonance-impurity state generated by the substitution of one Cu atom with a nonmagnetic atom, such as Zn, in the pseudogap state of a high-Tc superconductor. The precise microscopic origin of the pseudogap is not important for this state to be formed, in particular this resonance will be present even in the absence of superconducting fluctuations in the normal state. In the presence of superconducting fluctuations, we predict the existence of a counterpart impurity peak on a symmetric bias. The nature of this impurity resonance is similar to the previously studied resonance in the d-wave superconducting state.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2212 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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