Vir. J. Appl. Supercond. / Volume 18 / Issue 5 / MATERIALS IMPORTANT FOR APPLICATIONS

High Upper Critical Fields and Evidence of Weak-Link Behavior in Superconducting LaFeAsO_1-xF_x Thin Films

Source: Phys. Rev. Lett. 104, 077001 (2010); doi:10.1103/PhysRevLett.104.077001

Published 18 February 2010

ABSTRACT

^* Full Text: Access via Source Journal Abstract

PACS

74.25.Dw
Superconductivity phase diagrams
74.25.Sv
Critical currents in superconductors
74.25.Uv
Vortex phases (includes vortex lattices, vortex liquids, and vortex glasses)
74.78.-w
Superconducting films and low-dimensional structures
YEAR: 2010

PUBLICATION DATA

Publisher:

APS

S. Haindl, M. Kidszun, A. Kauffmann, K. Nenkov, N. Kozlova, J. Freudenberger, T. Thersleff, J. Hänisch, J. Werner, E. Reich, L. Schultz, and B. Holzapfel
IFW Dresden, P. O. Box 270116, D-01171 Dresden, Germany

SuperconductingLaFeAsO_1-xF_x thin films were grown on single crystalline LaAlO₃ substrateswith critical temperatures (onset) up to 28 K. Resistive measurements inhigh magnetic fields up to 40 T reveal a paramagnetically limitedupper critical field µ₀H_c2(0) around 77 T and a remarkable steepslope of -6.2 T K^-1 near T_c. From transport measurements we observedweak-link behavior in low magnetic fields and evidence for abroad reversible regime. ©2010 The American Physical Society

History:	Received 2 July 2009; published 18 February 2010
Permalink:	http://link.aps.org/abstract/PRL/v104/e077001

Superconductivity of FeSe_0.5Te_0.5 Thin Films Grown by Pulsed Laser Deposition

Suppression of the Critical Temperature of Superconducting NdFeAs(OF) Single Crystals by Kondo-Like Defect Sites Induced by -Particle Irradiation

High Upper Critical Fields and Evidence of Weak-Link Behavior in Superconducting LaFeAsO_1-xF_x Thin Films

Source: Phys. Rev. Lett. 104, 077001 (2010); doi:10.1103/PhysRevLett.104.077001

Superconductivity of FeSe0.5Te0.5 Thin Films Grown by Pulsed Laser Deposition

Suppression of the Critical Temperature of Superconducting NdFeAs(OF) Single Crystals by Kondo-Like Defect Sites Induced by -Particle Irradiation

High Upper Critical Fields and Evidence of Weak-Link Behavior in Superconducting LaFeAsO1-xFx Thin Films

Source: Phys. Rev. Lett. 104, 077001 (2010); doi:10.1103/PhysRevLett.104.077001

Superconductivity of FeSe_0.5Te_0.5 Thin Films Grown by Pulsed Laser Deposition

High Upper Critical Fields and Evidence of Weak-Link Behavior in Superconducting LaFeAsO_1-xF_x Thin Films