Tunneling Study of Andreev Bound States of High-Tc Superconductors
博士 === 國立清華大學 === 物理學系 === 88 === Tunneling into high-temperature superconductors is shown to be a powerful spectroscopic probe of the unconventional supercoducting states. The planar tunneling is performed on the (100), (110), and (001) oriented YBCO/Insulator/Normal metal planar junctions and on...
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| Format: | Others |
| Language: | en_US |
| Published: |
2000
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| Online Access: | http://ndltd.ncl.edu.tw/handle/12189846008737316182 |
| Summary: | 博士 === 國立清華大學 === 物理學系 === 88 === Tunneling into high-temperature superconductors is shown to be a powerful spectroscopic probe of the unconventional supercoducting states. The planar tunneling is performed on the (100), (110), and (001) oriented YBCO/Insulator/Normal metal planar junctions and on the point contact junctions of the (001)-oriented BSCCO single crystals. The quasi-particle spectra are shown in the c-axis oriented junctions. The zero-bias conductance peak (ZBCP) is observed in the conductance spectra of the ab-plane junctions with fairly reproducibility. The temperature and magnetic field dependence of the ZBCP are also measured. However, the field-induced splitting of the ZBCP expected by the theory is not observed in our experiments.
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