Ota, K., Hamada, K., Takemura, R., Ohmaki, M., Machi, T., Tanabe, K., ...
We investigated macroscopic quantum tunneling (MQT) of Bi$_2$Sr$_2$CaCu$_2$O$_y$ intrinsic Josephson junctions (IJJs) with two device structures. One is a nanometer-thick small mesa structure with...