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Nonlocal vortex motion in mesoscopic amorphous Nb0.7Ge0.3 structures | | A. Helzel
; I. Kokanovic
; D. Babic
; L. V. Litvin
; F. Rohlfing
; F. Otto
; C. Surgers
; C. Strunk
; | | Date: |
16 Jun 2006 | | Subject: | Superconductivity; Mesoscopic Systems and Quantum Hall Effect | | Abstract: | We study nonlocal vortex transport in mesoscopic amorphous Nb0.7Ge0.3 samples. A dc current I is passed through a wire connected via a perpendicular channel, of a length L= 2-5 um, with a pair of voltage probes where a nonlocal response Vnl ~ I is measured. The maximum of Rnl=Vnl/I for a given temperature occurs at an L-independent magnetic field and is proportional to 1/L. The results are interpreted in terms of the dissipative vortex motion along the channel driven by a remote current, and can be understood in terms of a simple model. | | Source: | arXiv, cond-mat/0606449 | | Services: | Forum | Review | PDF | Favorites | |
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