Thermal and electromagnetic properties ofBi2Sr2CaCu2O8intrinsic Josephson junction stacks studied via one-dimensional coupled sine-Gordon equations
| Autor: | Jinshi Yuan, T. E. Judd, Xiaoxiang Zhou, Akira Ishii, F. Rudau, Raphael Wieland, Reinhold Kleiner, M Tsujimoto, R. G. Mints, Yan Huang, Takeshi Hatano, P. H. Wu, B. Gross, Nickolay V. Kinev, D. Y. An, Valery P. Koshelets, Edward Goldobin, Min Ji, Dieter Koelle, Huabing Wang |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Physical Review B. 91 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.91.104513 |
| Popis: | We used one-dimensional coupled sine-Gordon equations combined with heat diffusion equations to numerically investigate the thermal and electromagnetic properties of a 300 $\ensuremath{\mu}\mathrm{m}$ long intrinsic Josephson junction stack consisting of $N=700$ junctions. The junctions in the stack are combined with $M$ segments where we assume that inside a segment all junctions behave identically. Most simulations are for $M=20$. For not too high bath temperatures there is the appearance of a hot spot at high-bias currents. In terms of electromagnetic properties, robust standing-wave patterns appear in the current density and electric field distributions. These patterns come together with vortex/antivortex lines across the stack that correspond to $\ensuremath{\pi}$-kink states, discussed before in the literature for a homogeneous temperature distribution in the stack. We also discuss scaling of the thermal and electromagnetic properties with $M$, on the basis of simulations with $M$ between 10 and 350. |
| Databáze: | OpenAIRE |
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