Strong vortex pinning in Co-doped BaFe2As2 single crystal thin films

Title
Strong vortex pinning in Co-doped BaFe2As2 single crystal thin films
Authors
C. TarantiniS. LeeY. ZhangJ. JiangC. W. BarkJ. D. WeissA. PolyanskiiC. T. Nelson장호원C. M. FolkmanS. H. BaekX. Q. PanA. GurevichE. E. HellstromC. B. EomD. C. Larbalestier
Keywords
Co-doped BaFe2As2; SrTiO3 template; Vortex pinning; Nanosize columnar defects.; 2E21722
Issue Date
2010-04
Publisher
Applied physics letters
Citation
VOL 96, NO 14, 142510-1-142510-3
Abstract
We report the field and angular dependences of Jc of truly epitaxial Co-doped BaFe2As2 thin films grown on SrTiO3/(La,Sr)(Al,Ta)O3 with different SrTiO3 template thicknesses. The films show Jc comparable to single crystals and a maximum pinning force Fp(0.6Tc)>5 GN/m3 at H/Hirr ∼ 0.5 indicative of strong high-field vortex pinning. Due to the strong correlated c-axis pinning, Jc for field along the c-axis exceeds Jc for H∥ab plane, inverting the expectation of the Hc2 anisotropy. High resolution transmission electron microscopy reveals that the strong vortex pinning is due to a high density of nanosize columnar defects.
URI
http://pubs.kist.re.kr/handle/201004/37282
ISSN
0003-6951
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE