| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Overdoped High Current Density Bi2-xPbxSr2CaCu2O8+δ Intrinsic Josephson Junction Mesas and Their Switching Current Distributions |
Minoru SUZUKI, Kenji HAMADA, Ryota TAKEMURA, Masayuki OHMAKI, Itsuhiro KAKEYA |
| Department of Electronic Science and Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto 615-8510, Japan |
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| Cite this article: |
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Minoru SUZUKI, Kenji HAMADA, Ryota TAKEMURA et al 2010 Chin. Phys. Lett. 27 087406 |
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Abstract Small and thin mesa structures of intrinsic Josephson junctions 1-2 μm on a side and 1.5-7.5 nm in thickness are fabricated from single crystals of Bi2-xPbxSr2CaCu2O8+δ with a nominal Pb content x from 0.2 to 0.5. The Josephson critical current density jc is found to be pronouncedly large, ranging from 10 to 50 kA/cm2. Switching current probability measurements for these mesa samples show an indication of a crossover to the macroscopic quantum tunneling region.
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| Keywords:
74.72.-h
74.50.+r
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Received: 07 June 2010
Published: 28 July 2010
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| PACS: |
74.72.-h
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(Cuprate superconductors)
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74.50.+r
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(Tunneling phenomena; Josephson effects)
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[1] Kleiner R, Seinmeyer F, Kunkel G and M üller P 1992 Phys. Rev. Lett. 68 2394
[2] Oya G, Aoyama N, Irie A, Kishida S and Tokutaka H 1992 Jpn. J. Appl. Phys. 31 L829
[3] Kleiner R and M üller P 1994 Phys. Rev. B 49 1327
[4] Suzuki M, Watanabe T and Matsuda A 1999 Phys. Rev. Lett. 82 5361
[5] Inomata K, Sato S, Nakajima K, Tanaka A, Takano Y, Wang H B, Nagao M, Hatano H and Kawabata S 2005 Phys. Rev. Lett. 95 107005
[6] Jin X Y, Lisenfeld J, Koval Y, Lukashenko A, Ustinov A V and M üller P 2006 Phys. Rev. Lett. 96 177003
[7] Kashiwaya H, Matsumoto T, Shibata H, Kashiwaya S, Eisaki H, Yoshida Y, Kawabata S and Tanaka Y 2008 J. Phys. Soc. Jpn. 77 104708
[8] Li S X, Qiu W, Han S, Wei Y F, Zhu X B, Gu C Z, Zhao S P and Wang H B 2007 Phys. Rev. Lett. 99 037002
[9] Ota K, Hamada K, Takemura R, Ohmaki M, Machi T, Tanabe K, Suzuki M, Maeda A and Kitano H 2009 Phys. Rev. B 79 134505
[10] Kim N, Doh Y J, Chang H S and Lee H J 1999 Phys. Rev. B 59 14639
[11] Anagawa K, Watanabe T and Suzuki M 2006 Phys. Rev. B 73 184512
[12] You L X, Yurgens A, Winkler D, Torstensson M, Watauchi S and Tanaka I 2006 Supercond. Sci. Technol. 19 S209
[13] Suzuki M, Ohmaki M, Takemura R, Hamada K, Watanabe T, Ota K, Kitano H and Maeda A 2008 J. Phys. Conf. Ser. 129 012033
[14] Zhao S P, Zhu X B, Wei Y F, Chen G H, Yang Q S and Lin C T 2005 Phys. Rev. B 72 184511
[15] Zhu X B, Wei Y F, Zhao S P, Chen G H, Yang H F, Jin A Z and Gu C Z 2006 Phys. Rev. B 73 224501
[16] Doh Y J, Lee H J and Chang H S 2000 Phys. Rev. B 61 3620
[17] Castellano M G, Torrioli G, Cosmelli C, Constantini A, Chiarello F, Carelli P, Rotoli G, Cirillo M and Kautz R L 1996 Phys. Rev. B 54 15417
[18] Kleiner R, M üller P, Kohlstedt H, Pedersen N F and Sakai S 1994 Phys. Rev. B 50 3942
[19] Kawakami T and Suzuki M 2007 Phys. Rev. B 76 134503
[20] Däumling M and Chandrashekhar G V 1992 Phys. Rev. B 46 6422
[21] Krasnov V M, Bauch T, Intiso S, Fürfeld E, Akazaki T, Takayanagi H and Delsing P 2005 Phys. Rev. Lett. 95 157002
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