Phase-dependent characteristics of a superconducting junction by using the Schrodinger wave function
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Date
2007
Authors
Cantürk, Mehmet
Kurt, E.
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Publisher
Iop Publishing Ltd
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Abstract
As a macroscopic quantum system, superconducting junction devices are considered both analytically and numerically with the help of the Schrodinger wave equation. Considering the Cooper pair wave function psi in a time-dependent nature, the Hamiltonian of the system is constructed. The phase difference theta is assumed to be a unique independent variable of the superconducting junction in order to evaluate the characteristics of the system. The probability rho(theta) and super current j(theta) densities are determined for different applied voltages V. It is observed that both the amplitude and the period of the wave function psi(theta) have indicated different behaviors as functions of theta for various cases of V. Similarly, rho and j reflect drastic changes. It is shown that numerical results are in good agreement with the analytic results. Our results indicate consistency with some earlier experimental studies for different superconducting devices.
Description
Kurt, Erol/0000-0002-3615-6926
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Citation
7
WoS Q
Q2
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Source
Volume
76
Issue
6
Start Page
634
End Page
640