Quantum creep in a Bi2Sr2CaCu2Ox single crystal
| Autor: | V.N. Zavaritsky, A. Amann, K. Aupke, P. Visani, Ana Celia Mota, T. Teruzzi |
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| Rok vydání: | 1993 |
| Předmět: |
Physics
Superconductivity Condensed matter physics Energy Engineering and Power Technology Condensed Matter Physics Electronic Optical and Magnetic Materials Coherence length Creep Electrical resistivity and conductivity Condensed Matter::Superconductivity Electrical and Electronic Engineering Anisotropy Quantum Single crystal Quantum tunnelling |
| Zdroj: | Physica C: Superconductivity. 209:255-258 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/0921-4534(93)90918-g |
| Popis: | According to the theory of quantum collective creep (QCC) of Blatter, Geshkenbein and Vinokur, the quantum creep rate is enhanced in superconductors with short coherence length ξ, high normal state resistivity ϱn, weak collective pinning and strong anisotropy. We have investigated quantum tunneling in a single crystal of the highly anisotropic Bi2Sr2CaCu2Ox. In the configuration with the external field parallel to the c-axis we measure tunneling rates at T = 7 mK which are a factor of 4 to 5 higher than our previous measurements in Y1Ba2Cu4Oy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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