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題 名 | Quasi-Particle Tunneling of D-Wave Superconductors |
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作 者 | Cheng,Hong-wen; Chang,Li-fu; Chi,C. C.; Wu,M. K.; | 書刊名 | Chinese Journal of Physics |
卷 期 | 36:2(Part2) 民87.04 |
頁 次 | 頁232-237 |
分類號 | 337.473 |
關鍵詞 | 超導體; |
語 文 | 英文(English) |
英文摘要 | There are apparently contradicting evidence about the high-Tc superconducting order parameter symmetry from the experimental studies of Josephson currents. Although there are far more experimental studies about the quasi-particle tunneling of high-Tc superconductors in various geometries, it is difficult to extract the nature of the order parameter because of lacking theoretical comparison. We calculate I-V curves and dI/dV-V curves of quasi-particle tunneling from high-Tc superconductor to normal metal. The normal state of the high-Tc superconductor is assumed to be that of a 2-D tight-binding model. Numerical results along different crystalline directions for the d-wave symmetry are carried out. The differences in the conductance spectra are emphasized and compared with available experimental data. |
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