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Nonlocal vortex motion in mesoscopic amorphous Nb0.7Ge0.3 structures

Helzel, A.; Kokanović, I.; Babić, D.; Litvin, L. V.; Rohlfing, F.; Otto, F.; Sürgers, Christoph; Strunk, C.

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 mu m, with a pair of voltage probes where a nonlocal response V-nl proportional to I is measured. The maximum of R-nl=V-nl/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.


Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2006
Sprache Englisch
Identifikator DOI: 10.1103/PhysRevB.74.220510
ISSN: 1098-0121
KITopen ID: 1000050514
Erschienen in Physical Review B - Condensed Matter and Materials Physics
Band 74
Heft 22
Seiten 220510
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