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Quantum Spontaneous Magnetization in Single-Junction Superconducting π-Rings |
| TIAN Ye, ZHU Xue-Min, LIU Dang-Ting, ZHAO Shi-Ping, CHEN Geng-Hua |
| Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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TIAN Ye, ZHU Xue-Min, LIU Dang-Ting et al 2008 Chin. Phys. Lett. 25 3757-3760 |
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Abstract Based upon the calculations of energy levels and quantum states, we discuss the probability of quantum spontaneous magnetization flux as a function of the screen parameter β for the superconducting ring containing one Josephson π-junction, and compare the result with that in the classical case. Our results indicate that there is significant difference in the magnetization behaviour around β=1 between the quantum and classical situations.
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74.50.+r
03.67.Lx
74.25.Ha
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Received: 22 January 2008
Published: 26 September 2008
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| PACS: |
74.50.+r
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(Tunneling phenomena; Josephson effects)
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03.67.Lx
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(Quantum computation architectures and implementations)
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74.25.Ha
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(Magnetic properties including vortex structures and related phenomena)
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[1] Hilgenkamp H, Ariando, Smilde H H, Blank D H A, RijndersG, Rogalla H, Kirtley J R and Tsuei C C 2003 Nature 42250
[2] Walker M B and Luettmer-Strathmann J 1996 Phys. Rev.B 54 588
[3] Bulaevskii L N, Kuzii V V and Sobyanin A A 1977 JETPLett. 25 290
[4] Geshkenbein V B and Larkin A I 1986 JETP Lett. 43 395
[5] Sigrist M and Rice T M 1992 J. Phys. Soc. Jpn. 61 4283
[6] Tian Ye, Wang H W, Kong X Y, Zhao S P, Chen G H and Yang QS 2004 Supercond. Sci. Technol. 17 838
[7] Kong X Y, Tian Ye, Wang H W, Zhao S P, Chen G H and Yang QS 2004 Supercond. Sci. Technol. 17 791
[8] Kong X Y, Tian Ye, Wang H W, Zhao S P, Chen G H and Yang QS 2004 Supercond. Sci. Technol. 17 1088
[9] Diggins J, Clark T D, Prance H, Prance R J, Spiller T P,Ralph J and Brouers F 1995 Physica B 215 367
[10] Friedman J R, Patel V, Chen W, Tolpygo S K and Lukens J E2000 Nature 406 43
[11] Tian Ye 2006 PhD thesis (Beijing: Institute of Physics,Chinese Academy of Sciences) (in Chinese)
[12] Ballentine L E 2002 Quantum Mechanics: A ModernDevelopment (Singapore: World Scientific) |
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