Title: | Zero-bias anomaly in the tunneling spectroscopy of high-Tc superconducting films |
Authors: | Kao, RT Wang, SJ Juang, JY Wu, KH Uen, TM Gou, YS 交大名義發表 電子物理學系 National Chiao Tung University Department of Electrophysics |
Issue Date: | 1-Aug-1997 |
Abstract: | The Coulomb staircase structure observed in the tunneling current-voltage characteristics (IVC's) of superconducting YBa2Cu3O7-delta(YBCO) films have been found to exhibit an extra feature of zero-bias anomaly (ZBA), with Delta V-0 approximate to 1.5 Delta V-n when the bias voltage exceeded a certain threshold value. Where Delta V-0 and Delta V-n (which remains essentially constant) are the widths of the voltage step across zero bias and other higher order steps, respectively. Comparisons made with TlBa2Ca2Cu3O9+/-delta (Tl-1223) films under similar conditions indicate that the effects of surface layer polarization might be the primary reason responsible for the ZBA observed in YBCO films. |
URI: | http://dx.doi.org/10.1016/S0921-4534(97)00853-8 http://hdl.handle.net/11536/388 |
ISSN: | 0921-4534 |
DOI: | 10.1016/S0921-4534(97)00853-8 |
Journal: | PHYSICA C |
Volume: | 282 |
Issue: | |
Begin Page: | 1493 |
End Page: | 1494 |
Appears in Collections: | Conferences Paper |
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