Screening currents in a normal metal backed by a superconductor |
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| Affiliation: | 1. Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Republic of Korea;2. State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;3. High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China;4. Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China;1. Tokyo Institute of Technology, Yokohama 226-8502, Japan;2. RIKEN Center for Life Science Technologies, Yokohama 230-0045, Japan;3. Japan Superconductor Technology Inc., Kobe 651-2271, Japan;4. National Institute for Materials Science, Tsukuba 305-0003, Japan;5. Sophia University, Yotsuya, 102-8584, Japan |
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| Abstract: | The Meissner effect in a normal metal N in which superconductivity is induced by contact with a superconductor S, has been studied by an r.f. permeability method. It is found that, when N itself is a superconductor below some critical temperature TcN, a magnetic field can be screened, up to temperatures significantly higher than TcN. |
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