TY - JOUR
T1 - Macroscopic quantum tunneling induced by a spontaneous field in intrinsic Josephson junctions
AU - Chizaki, Y.
AU - Kashiwaya, H.
AU - Kashiwaya, S.
AU - Koyama, T.
AU - Kawabata, S.
N1 - Funding Information:
The authors thank T. Kato, H. Kitano, H. Kori, K. Kudo, M. Machida, H. Nakano and Y. Ota for useful discussions. This work was supported by CREST-JST.
PY - 2011/11
Y1 - 2011/11
N2 - We theoretically study macroscopic quantum tunneling (MQT) in capacitively coupled Josephson junctions in the case that one of the junctions is in the finite voltage state. We find that the system can be mapped into a one dimensional model with a spontaneous periodic perturbation and calculate the MQT rate by using the time-dependent WKB method. Then the MQT rate is found to be resonantly enhanced and the enhancement of MQT rate is found even off the resonant point.
AB - We theoretically study macroscopic quantum tunneling (MQT) in capacitively coupled Josephson junctions in the case that one of the junctions is in the finite voltage state. We find that the system can be mapped into a one dimensional model with a spontaneous periodic perturbation and calculate the MQT rate by using the time-dependent WKB method. Then the MQT rate is found to be resonantly enhanced and the enhancement of MQT rate is found even off the resonant point.
KW - Coupled Josephson junctions
KW - Macroscopic quantum tunneling
KW - WKB method
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U2 - 10.1016/j.physc.2011.05.046
DO - 10.1016/j.physc.2011.05.046
M3 - Article
AN - SCOPUS:80054975328
VL - 471
SP - 758
EP - 759
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 21-22
ER -