Abstract
We used one-dimensional coupled sine-Gordon equations combined with heat diffusion equations to numerically investigate the thermal and electromagnetic properties of a 300 long intrinsic Josephson junction stack consisting of junctions. The junctions in the stack are combined with segments where we assume that inside a segment all junctions behave identically. Most simulations are for . 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 -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 , on the basis of simulations with between 10 and 350.
10 More- Received 27 November 2014
- Revised 5 March 2015
DOI:https://doi.org/10.1103/PhysRevB.91.104513
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