|
|||||
|
|
Macroscopic quantum tunneling induced by a spontaneous field in intrinsic Josephson junctions |
|
| Authors: | Y Chizaki H Kashiwaya S Kashiwaya T Koyama S Kawabata |
| Institution: | 1. Nanosystem Research Institute (NRI), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan;2. CREST, Japan Science and Technology Corporation (JST), Kawaguchi, Saitama 332-0012, Japan;3. Nanoelectronics Research Institute (NeRI), AIST, Tsukuba, Ibaraki 305-8568, Japan;4. Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan;1. Superconductivity Research Laboratory/ISTEC, Tokyo, Japan;2. Waseda University, Tokyo, Japan |
| Abstract: | 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. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |