Theory of phase dynamics in intrinsic Josephson junctions with multigap superconducting layers |
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| Authors: | Y. Ota M. Machida T. Koyama |
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| Affiliation: | 1. CCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan;2. Institute for Materials Research, Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai 980-8577, Japan;3. CREST (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;4. JST-TRIP, 5 Sanbancho Chiyoda-ku, Tokyo 102-0075, Japan;1. Superconductivity Research Laboratory/ISTEC, Tokyo, Japan;2. Waseda University, Tokyo, Japan |
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| Abstract: | We construct a theory of dynamical behavior in intrinsic Josephson junction stacks with multigap superconducting layers. The theory predicts the existence of two kinds of phase modes, one of which is the Josephson-plasma mode and other of which is the Leggett’s mode. We discuss a cooperative phenomena induced by inter-band Josephson coupling in addition to capacitive and inductive couplings between the superconducting layers. |
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