Zero-bias peak in tunneling spectra of high-Tc superconductors and its splitting

✍ Scribed by Y. Asano; R. Sekiguchi; Y. Tanaka; H. Tsuchiura; S. Kashiwaya

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 368 KB
• Volume: 412-414
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2004.01.039

✦ Synopsis

Effects of impurities on the conductance in normal-metal/d-wave superconductor junctions are discussed. By using the single-site approximation, it is shown that the impurity scattering causes the split of the zero-bias conductance peak (ZBCP). So far, the split of the ZBCP at the zero magnetic field has been believed to be a strong evidence of the broken time reversal symmetry states at a surface of a high-T c superconductor. However we conclude that the impurity scattering is also responsible for the split of the ZBCP.