Macroscopic quantum tunneling induced by a spontaneous field in intrinsic Josephson junctions

作者：Chizaki Y^*; Kashiwaya H; Kashiwaya S; Koyama T; Kawabata S

来源：Physica C-Superconductivity and Its Applications, 2011, 471(21-22): 758-759.

DOI：10.1016/j.physc.2011.05.046

• Coupled Josephson junctions
• Macroscopic quantum tunneling
• WKB method

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.

• 出版日期2011-11