Quantum Effects in Resistance-Shunted Josephson Junctions
| dc.creator | Kato, Takeo | |
| dc.creator | Imada, Masatoshi | |
| dc.date | 1999-08-13 | |
| dc.date.accessioned | 2026-07-07T03:14:13Z | |
| dc.date.available | 2026-07-07T03:14:13Z | |
| dc.description | Thermodynamics and transport properties of resistance-shunted Josephson junctions are studied theoretically in the tight-binding limit E_C/E_J<<1, where E_C and E_J are a charging energy and a Josephson coupling energy respectively. Based on a phenomenological harmonic-oscillator model, weak coupling region K=R_Q/R<<1 is analytically studied, where R and R_Q=h/(2e)^2 are a shunted resistance and the quantum resistance. In addition to the effective bandwidth, we find that this multi-level system genuinely has a novel crossover at lower energy below which the density of states becomes strongly degenerate. These two energy scales control the linear DC responses, optical responses, and nonlinear I-V characteristics. The lower energy crossover indicates the existence of a new class of strongly-correlated phenomena beyond the framework of the Kondo problem. | |
| dc.description | 10 pages, 7 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9908192 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9908192 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/29593 | |
| dc.subject | Superconductivity | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Quantum Effects in Resistance-Shunted Josephson Junctions | |
| dc.type | text |