期刊
EUROPHYSICS LETTERS
卷 67, 期 2, 页码 280-286出版社
EDP SCIENCES S A
DOI: 10.1209/epl/i2004-10067-y
关键词
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By exploiting the recently derived quantum Smoluchowski equation, the classical Ivanchenko-Zil'berman theory for overdamped diffusive phase motion of low-capacitance Josephson junctions is extended to the low-temperature quantum domain where charging effects appear. This formulation allows to derive explicit results for the current-voltage characteristics over a broad range of parameters that reduce to known findings in certain limits. In particular, the transparent analytical approach comprises Coulomb-blockade physics, coherent Cooper-pair transfer, and the precursors of macroscopic quantum tunneling and needs to be supplemented by more sophisticated methods only at very low temperatures.
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