Volume 96, Number 4, November 2011
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||11 November 2011|
Effect of the electromagnetic environment on the dynamics of charge and phase particles in one-dimensional arrays of small Josephson junctions
Institute of Physics, Academia Sinica - Taipei 115, Taiwan
2 Department of Physics, National Chung Hsing University - 250, Taichung, Taiwan
3 Department of Electronic Engineering, National Chiao-Tung University - Hsinchu 300, Taiwan
4 Department of Physics, National Taiwan University - Taipei 106, Taiwan
5 Department of Physics, National Chang-Hua University of Education - ChangHua 500, Taiwa n
6 Department of Physics, National Chen-Kung University - Tainan 701, Taiwan
Accepted: 30 September 2011
The effect of the electromagnetic environment on the dynamics of quasi-particles, Cooper pairs and phase particles in one-dimensional arrays of small Josephson junctions is investigated experimentally and theoretically. It is found that the environment enhances the phase ordering and thus suppresses quasi-particle tunneling at high temperature and localization of Cooper pairs at low temperature. The dynamics is studied in the context of phase-charge duality, and the experimental results are quantitatively analyzed in both charge-ordered and phase-ordered regimes. Based on these analyses, a low-temperature phase diagram as well as a finite-temperature crossover phase diagram are constructed and compared to the experimental diagrams.
PACS: 74.40.Kb – Quantum critical phenomena / 74.81.Fa – Josephson junction arrays and wire networks / 74.25.Dw – Superconductivity phase diagrams
© EPLA, 2011
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