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Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես
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Numerical Study of Josephson Nanostructures Using Parallel Computing
Ստեղծողը:
I. R. Rahmonov ; E. V. Zemlyanaya ; M. V. Bashashin ; P. Atanasova ; A. R. Rahmonova ; Yu. M. Shukrinov
Համատեղ հեղինակները:
Umarov Physical Technical Institute, TAS, Dushanbe, 734063 Tajikistan ; Joint Institute for Nuclear Research, Dubna 141980, Russia ; Dubna State University, Dubna 141982, Russia ; Plovdiv Universityi ''Paisii Hilendarski'', Plovdiv 4003, Bulgaria
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Physics ; Quantum mechanics, field theories, and special relativity ; Cross-Disciplinary
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Ամփոփում:
We investigate the phase dynamics of the stack of long JJs, the length of which exceeds the Josephson penetration depth λJ , taking into account the inductive and capacitive couplings between junctions and diffusion current. Numerical simulation of current-voltage characteristics of the stack is based on numerical solution of a system of nonlinear partial differential equations by the fourth order Runge-Kutta method and finite-difference approximation. The calculations are performed using the MPI technique for parallel implementation. The methodical calculations on multi-processor cluster (LIT JINR) with a different number of parallel MPI-processes are carried out. We have shown that the developed parallel algorithm provides about 7 time acceleration in comparison with serial simulation.