Theory of Macroscopic Quantum Tunneling and Dissipation in High-Tc Josephson Junctions

Abstract

We have investigated macroscopic quantum tunneling (MQT) in in-plane high-Tc superconductor Josephson junctions and the influence of the nodal-quasiparticle and the zero energy bound states (ZES) on MQT. We have shown that the presence of the ZES at the interface between the insulator and the superconductor leads to strong Ohmic quasiparticle dissipation. Therefore, the MQT rate is noticeably suppressed in comparison with the c-axis junctions in which ZES are completely absent.

4 pages. 1 figure

References in corpus (4)

• Macroscopic quantum tunneling in a d-wave high-Tc superconductor
• Enhanced Macroscopic Quantum Tunneling in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Intrinsic Josephson Junction Stacks
• Decoherence due to nodal quasiparticles in d-wave qubits
• A single intrinsic Josephson junction with double-sided fabrication technique

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• Theory of two-dimensional macroscopic quantum tunneling in YBa${}_2$ Cu${}_3$ O${}_{7-\delta }$ Josephson junctions coupled to an LC circuit
• Theory of quantum transport in Josephson junctions with a ferromagnetic insulator
• Two-dimensional macroscopic quantum dynamics in YBCO Josephson junctions
• Vortex confinement through an unquantized magnetic flux
• Atomic scale 0-pi transition in a high-Tc superconductor/ferromagnetic-insulator/high-T superconductor Josephson junction
• Theory of two-dimensional macroscopic quantum tunneling in a Josephson junction coupled with an LC circuit
• Towards 4 formalisms description of properties of the unconventional Josephson junction and unconventional SQUIDs made by putting non-superconducting strip on the top of superconducting strip