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Nonequilibrium Josephson current in ballistic multiterminal SNS-junctions | | P. Samuelsson
; A. Ingerman
; V.S. Shumeiko
; G. Wendin
; | | Date: |
8 May 2000 | | Subject: | Superconductivity | cond-mat.supr-con | | Abstract: | We study the nonequilibrium Josephson current in a long two-dimensional ballistic SNS-junction with a normal reservoir coupled to the normal part of the junction. The current for a given superconducting phase difference $phi$ oscillates as a function of voltage applied between the normal reservoir and the SNS-junction. The period of the oscillations is $pi hbar v_F/L$, with $L$ the length of the junction, and the amplitude of the oscillations decays as $V^{-3/2}$ for $eV gg hbar v_{F}/L$ and zero temperature. The critical current $I_c$ shows a similar oscillating, decaying behavior as a function of voltage, changing sign every oscillation. Normal specular or diffusive scattering at the NS-interfaces does not qualitatively change the picture. | | Source: | arXiv, cond-mat/0005141 | | Services: | Forum | Review | PDF | Favorites | |
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