TU Darmstadt / ULB / TUbiblio

Superconducting Proximity Effect in Crystalline Co and Cu Nanowires

Kompaniiets, Maksym and Dobrovolskiy, Oleksandr V. and Neetzel, Cornelia and Ensinger, Wolfgang and Huth, Michael :
Superconducting Proximity Effect in Crystalline Co and Cu Nanowires.
[Online-Edition: http://link.springer.com/article/10.1007/s10948-014-2694-x]
In: Journal of Superconductivity and Novel Magnetism, 28 (2) pp. 431-436. ISSN 1557-1939, 1557-1947
[Article] , (2014)

Official URL: http://link.springer.com/article/10.1007/s10948-014-2694-x

Abstract

Superconducting proximity effect is investigated by electrical resistance measurements in individual single-crystal Cu and polycrystalline Co nanowires in contact with a W-based floating inducer electrode (Tc= 5.2 K). Our analysis of the resistance drops shows that in both nanowires,(i)the superconducting proximity length ξ is of the order of 1μm at 2.4 K and (ii) its temperature dependencies can be fitted well to an expression of the form ξ(T)∝√ 1/Tin a wide temperature range, in good agreement with the theoretical predictions for ξ(T )in the diffusive limit. For the Co nanowire, dependencies of the spin-triplet ξ upon current and magnetic field are also reported

Item Type: Article
Erschienen: 2014
Creators: Kompaniiets, Maksym and Dobrovolskiy, Oleksandr V. and Neetzel, Cornelia and Ensinger, Wolfgang and Huth, Michael
Title: Superconducting Proximity Effect in Crystalline Co and Cu Nanowires
Language: English
Abstract:

Superconducting proximity effect is investigated by electrical resistance measurements in individual single-crystal Cu and polycrystalline Co nanowires in contact with a W-based floating inducer electrode (Tc= 5.2 K). Our analysis of the resistance drops shows that in both nanowires,(i)the superconducting proximity length ξ is of the order of 1μm at 2.4 K and (ii) its temperature dependencies can be fitted well to an expression of the form ξ(T)∝√ 1/Tin a wide temperature range, in good agreement with the theoretical predictions for ξ(T )in the diffusive limit. For the Co nanowire, dependencies of the spin-triplet ξ upon current and magnetic field are also reported

Journal or Publication Title: Journal of Superconductivity and Novel Magnetism
Volume: 28
Number: 2
Uncontrolled Keywords: Characterization and Evaluation of Materials, Condensed Matter Physics, Electrical resistance measurements, Focused particle beams, Magnetism, Magnetic Materials, Nanopatterning, Single nanowires, Strongly Correlated Systems, Superconductivity, Superconducting proximity effect
Divisions: 11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences
Date Deposited: 18 Feb 2015 12:56
Official URL: http://link.springer.com/article/10.1007/s10948-014-2694-x
Export:

Optionen (nur für Redakteure)

View Item View Item