Theory of two-dimensional macroscopic quantum tunneling in a Josephson junction coupled with an LC circuit

被引：1

作者：

Kawabata, Shiro ^{[1
,2
,3
]}

Kato, Takeo ^{[4
]}

Bauch, Thilo ^{[2
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, NRI, Tsukuba, Ibaraki 3058568, Japan

[2] Chalmers Univ Technol, Dept Microelect & Nanosci MC2, S-41296 Gothenburg, Sweden

[3] Japan Sci & Technol Corp JST, CREST, Kawaguchi, Saitama 3320012, Japan

[4] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 5: SUPERCONDUCTIVITY | 2009年 / 150卷

关键词：

DYNAMICS;

D O I：

10.1088/1742-6596/150/5/052105

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We investigate classical thermal activation (TA) and macroscopic quantum tunneling (MQT) for a Josephson junction coupled with an LC circuit theoretically. The TA and MQT escape rate are calculated analytically by taking into account the two-dimensional nature of the classical and quantum phase dynamics. We find that the MQT escape rate is largely suppressed by the coupling to the LC circuit. On the other hand, this coupling gives rise to slight reduction of the TA escape rate. These results are relevant for the interpretation of a recent experiment on the MQT and TA phenomena in grain boundary YBCO Josephson junctions.

引用

页数：4

共 16 条

[1] Quantum dynamics of a d-wave Josephson junction [J].

Bauch, T ;

Lindström, T ;

Tafuri, F ;

Rotoli, G ;

Delsing, P ;

Claeson, T ;

Lombardi, F .

SCIENCE, 2006, 311 (5757) :57-60

[2] Macroscopic quantum tunneling in d-wave YBa2Cu3O7-δ josephson junctions -: art. no. 087003 [J].

Bauch, T ;

Lombardi, F ;

Tafuri, F ;

Barone, A ;

Rotoli, G ;

Delsing, P ;

Claeson, T .

PHYSICAL REVIEW LETTERS, 2005, 94 (08)

[3] Macroscopic quantum tunneling in a d-wave High-TC Bi2Sr2CaCu2O8+δ superconductor -: art. no. 107005 [J].

Inomata, K ;

Sato, S ;

Nakajima, K ;

Tanaka, A ;

Takano, Y ;

Wang, HB ;

Nagao, M ;

Hatano, H ;

Kawabata, S .

PHYSICAL REVIEW LETTERS, 2005, 95 (10)

[4] Enhanced macroscopic quantum tunneling in Bi2Sr2CaCu2O8+δ intrinsic Josephson-junction stacks [J].

Jin, XY ;

Lisenfeld, J ;

Koval, Y ;

Lukashenko, A ;

Ustinov, AV ;

Müller, P .

PHYSICAL REVIEW LETTERS, 2006, 96 (17)

[5] Switching Dynamics of Bi2Sr2CaCu2O8+δ Intrinsic Josephson Junctions: Macroscopic Quantum Tunneling and Self-Heating Effect [J].

Kashiwaya, Hiromi ;

Matsumoto, Tetsuro ;

Shibata, Hajime ;

Kashiwaya, Satoshi ;

Eisaki, Hiroshi ;

Yoshida, Yoshiuki ;

Kawabata, Shiro ;

Tanaka, Yukio .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (10)

[6] Macroscopic quantum tunneling and quasiparticle-tunneling blockade effect in s-wave/d-wave hybrid junctions [J].

Kawabata, S. ;

Golubov, A. A. ;

Ariando ;

Verwijs, C. J. M. ;

Hilgenkamp, H. ;

Kirtley, J. R. .

PHYSICAL REVIEW B, 2007, 76 (06)

[7] Effect of zero-energy bound states on macroscopic quantum tunneling in high-Tc superconductor junctions -: art. no. 052506 [J].

Kawabata, S ;

Kashiwaya, S ;

Asano, Y ;

Tanaka, Y .

PHYSICAL REVIEW B, 2005, 72 (05)

[8] Macroscopic quantum tunneling and quasiparticle dissipation in d-wave superconductor Josephson junctions -: art. no. 132505 [J].

Kawabata, S ;

Kashiwaya, S ;

Asano, Y ;

Tanaka, Y .

PHYSICAL REVIEW B, 2004, 70 (13) :132505-1

[9] Macroscopic quantum dynamics of π junctions with ferromagnetic insulators [J].

Kawabata, Shiro ;

Kashiwaya, Satoshi ;

Asano, Yasuhiro ;

Tanaka, Yukio ;

Golubov, Alexander A. .

PHYSICAL REVIEW B, 2006, 74 (18)

[10] Theory of macroscopic quantum tunnelling and dissipation in high-Tc Josephson junctions [J].

Kawabata, Shiro ;

Kashiwaya, Satoshi ;

Asano, Yasuhiro ;

Tanaka, Yukio ;

Kato, Takeo ;

Golubov, Alexander A. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2007, 20 (02) :S6-S9

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