Published October 2011 | Version v1
Journal article Metadata-only

The vortex state of FeSe1-xTex superconducting thin films

Creators

  • 1. Department of Physics, National Tsing Hua University, Hsinchu 300, Taiwan (China)
  • 2. Institute of Physics, Academia Sinica, Nankang, Taipei 115, Taiwan (China)
  • 3. Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 106, Taiwan (China)
  • 4. Solid State Physics, Lund University, Box 118, S-221 00 Lund (Sweden)

Description

We report the vortex dynamics of tellurium substituted FeSe1-xTex superconducting thin films. The electric field versus current density (E-J) curve for films with low Te substitution is still governed by the thermally activated flux flow model at temperatures as low as 0.5TCoffset. In contrast, we clearly observed a vortex liquid-glass transition in films with high Te substitution. The E-J curves of these samples fit nicely to the scaling relations based on the 3D vortex glass theory. Our results reveal an enhancement of the vortex pinning as more Te content is introduced, which probably originates from the excess Fe at the interstitial site.

Availability note (English)

Available from http://dx.doi.org/10.1088/0953-2048/24/10/105011

Additional details

Identifiers

DOI
10.1088/0953-2048/24/10/105011;
PII
S0953-2048(11)96149-1;

Publishing Information

Journal Title
Superconductor Science and Technology
Journal Volume
24
Journal Issue
10
Journal Page Range
[5 p.]
ISSN
0953-2048
CODEN
SUSTEF

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43015193
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CURRENT DENSITY; DIAGRAMS; FLOW MODELS; INTERSTITIALS; SCALING; TELLURIUM; THIN FILMS; VORTICES
Descriptors DEC
CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELEMENTS; FILMS; INFORMATION; MATHEMATICAL MODELS; POINT DEFECTS; SEMIMETALS