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

Scientific paper - Original scientific paper

• Author: A. Helzel
• Author: Ivan Kokanović
• Author: Dinko Babić
• Author: L. V. Litvin
• Author: F. Rohlfing
• Author: F. Otto
• Author: C. Surgers
• Author: C. Strunk
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

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 µm, with a pair of voltage probes where a nonlocal response VnlI 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.

• Keywords (english): low-Tc films; mesoscopic and nanoscale systems; Vortex lattices; flux pinning; flux creep
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical review B: Condensed matter and materials physics
• Numbering: vol. 74, no. 22, 220510(R)
• p-ISSN: 1098-0121
• e-ISSN: 1550-235X
• DOI: https://doi.org/10.1103/PhysRevB.74.220510
• URN:NBN: urn:nbn:hr:217:995955
• Publication: 2006
• Project: Number: 119-1191458-1008; Title (croatian): Električna i magnetska svojstva odabranih anorganskih i organskih materijala; Leader: Ivan Kokanović; Jurisdiction: Croatia; Funding stream: ZP
• Document URL: http://link.aps.org/doi/10.1103/PhysRevB.74.220510
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (2006) by the American Physical Society.
• Created on: 2019-10-16 14:26:32