Local Density of States around a Magnetic Impurity in High- Tc Superconductors Based on the t−J Model
Hiroki Tsuchiura, Yukio Tanaka, Masao Ogata, Satoshi Kashiwaya
DOI 10.1103/PhysRevLett.84.3165 · Physical Review Letters
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Abstract
The local density of states (LDOS) around a magnetic impurity in high- Tc superconductors is studied using the two-dimensional t−J model with a realistic band structure. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov–de Gennes theory. In sharp contrast with the nonmagnetic impurity case, the LDOS near the magnetic impurity shows two resonance peaks reflecting the presence of spin-dependent resonance states. It is also shown that these resonance states are approximately localized around the impurity. The present results have an immediate connection with the scanning tunneling spectroscopy observation of Bi2Sr2Ca(Cu1−xNi[Zn]x)2O8+δ.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2Ca(Cu1-xNix)2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2Ca(Cu1-xZnx)2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+δ 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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