Josephson Effect in d-Wave Superconductor Junctions in a Lattice Model
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概要
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Josephson current between two d-wave superconductors is calculated by using a lattice model. Here we consider two types of junctions, i. e, the parallel junction and the mirror-type junction. The maximum Josephson current (J_c) shows a wide variety of temperature (T) dependence depending on the misorientation angles and the types of junctions. When the misorientation angles are not zero, the Josephson current has anomalous temperature dependencies because of a zero energy state (ZES) at the interfaces. In the case of mirror-type junctions, J_c has a non monotonic temperature dependence. These results are consistent with previous results based on the quasiclassical theory [Y Tanaka and S Kashiwaya Phys Rev B 56 (1997) 892]. On the other hand, we find that the ZES disappears in several junctions because of the Eriedel oscillations of the wave function, which is peculiar to the lattice model. In such junctions, the temperature dependence of J_c is close to the Ambegaokar-Baratoff's relation.
- 社団法人日本物理学会の論文
- 2003-09-15
著者
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Kashiwaya S
Nanoelectronics Research Institute (neri) National Institute Of Advanced Industrial Science And Tech
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Asano Y
Hokkaido Univ. Sapporo Jpn
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Inoue Jun-ichiro
Department Of Applied Physics Nagoya University
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Asano Yuzo
Institute Of Applied Physics University Of Tsukuba
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Inoue J
Nagoya Univ. Nagoya
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ASANO Yasuhiro
Department of Applied Physics,Nagoya University
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ASANO Yoshihiro
NTT Electrical communications Laboratories
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Koikegami S
Jsps Tokyo
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Asano Y
Fukui Univ. Technol. Fukui
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Asano Yasuhiro
Department Of Applied Physics And Chemistry Fukui University Of Technology
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TANAKA Yukio
Department of Applied Physics, Nagoya University
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Inoue J
Department Of Basic Science University Of Tokyo:core Research For Evolutional Science And Technology
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Asano T
Hokkaido Univ. Sapporo
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TSUCHIURA Hiroki
SISSA
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SHIRAI Shota
Department of Applied Physics, Nagoya University
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TANUMA Yasunari
Department of Applied Physics, Nagoya University
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KASHIWAYA Satoshi
National Institute of Advanced Industrial Science and Technology
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Shirai S
Department Of Applied Physics Nagoya University
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Kawabata Shiro
Nanotechnology Research Institute Aist
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Tsuchiura H
International School For Advanced Studies (sissa)
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Inoue Junichiro
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Tanaka Yukio
Department Of Applied Physics Nagoya University
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Hirai Takashi
Department Of Applied Physics Nagoya University
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Inoue Junichiro
Department of Applied Physics, Nagoya University
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Inoue Jun-ichiro
Department of Applied Physics, Nagoya University
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INOUE Jun-Ichiro
Department of Applies Physics, Nagoya University
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