Possible observation of energy level quantization in an intrinsic Josephson junction

Details Possible observation of energy level quantization in an intrinsic Josephson junction Possible observation of energy level quantization in an intrinsic Josephson junction

2008-02-28

arxiv.org/abs/0802.4203v1

Physics

Condensed Matter

Superconductivity

5 pages, 3 figures

Scientific paper

10.1016/j.physc.2008.05.251

Energy level quantization (ELQ) is studied to clarify the macroscopic quantum dynamics of the d-wave Josephson junction (JJ). The influences of the nodal quasiparticles of d-wave superconductivity on the damping effect are numerically evaluated on the basis of a phenomenological model. The calculation, based on realistic parameters for a Bi2Sr2CaCu2O8+d (Bi2212) intrinsic JJ, shows that the observation of ELQ is possible when the sweep rate of the bias current exceeds 10 A/sec. High-sweep- rate measurements (121A/sec) performed on a Bi2212 intrinsic JJ result in the appearance of multiple peaks in the switching current distribution suggesting the realization of ELQ in the d-wave JJ.

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