Topological structure of the inter-band phase difference soliton in two-band superconductivity |
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| Authors: | Y. Tanaka A. Iyo K. Tokiwa T. Watanabe A. Crisan A. Sundaresan N. Terada |
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| Affiliation: | 1. National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan;2. Tokyo University of Science, Noda, Japan;3. University of Birmingham, Birmingham, United Kingdom;4. National Institute of Materials Physics, Bucharest, Romania;5. Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, India;6. Kagoshima University, Kagoshima, Japan |
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| Abstract: | Two-component superconductivity based on the two-band superconductor has a functional topology such as an inter-band phase difference soliton (i-soliton) to realize topological electronics (topolonics). Many gauge field theories are applied to investigate the topology of two-band superconductivity. To ease experimental and electronics applications, these theories should be refined. Weinberg–Salam theory and SU(2) (two-dimensional special unitary symmetry) gauge field theory are proper starting points. An effective extra force field because of the crystal structure and inter-band Josephson interaction, rather than spontaneous symmetry breaking, simplifies the conventional gauge field theory. |
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| Keywords: | i-Soliton Weinberg&ndash Salam model Yang&ndash Mills theory SU(2) |
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