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29 March 2024
 
  » arxiv » cond-mat/0501358

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Effect of zero energy bound states on macroscopic quantum tunneling in high-Tc superconductor junctions
Shiro Kawabata ; Satoshi Kashiwaya ; Yasuhiro Asano ; Yukio Tanaka ;
Date 16 Dec 2004
Subject Superconductivity; Mesoscopic Systems and Quantum Hall Effect; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.mes-hall cond-mat.str-el quant-ph
AbstractThe macroscopic quantum tunneling (MQT) in the current biased high-Tc superconductor Josephson junctions and the effect of the zero energy bound states (ZES) on the MQT are theoretically investigated. We obtained the analytical formula of the MQT rate and showed that the presence of the ZES at the normal/superconductor interface leads to a strong Ohmic quasiparticle dissipation. Therefore, the MQT rate is noticeably inhibited in compared with the c-axis junctions in which the ZES are completely absent.
Source arXiv, cond-mat/0501358
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