High field vortex phase diagram of Fe( Se, Te) thin films

被引：35
|
作者：
Bellingeri, E. [1 ]
Kawale, S. [1 ,2 ]
Caglieris, F. [1 ,2 ]
Braccini, V. [1 ]
Lamura, G. [1 ]
Pellegrino, L. [1 ]
Sala, A. [1 ,2 ]
Putti, M. [1 ,2 ]
Ferdeghini, C. [1 ]
Jost, A. [3 ]
Zeitler, U. [3 ]
Tarantini, C. [4 ]
Jaroszynski, J. [4 ]
机构：
[1] CNR SPIN Genova, I-16152 Genoa, Italy
[2] Univ Genoa, Dept Phys, I-16146 Genoa, Italy
[3] Radboud Univ Nijmegen, Inst Mol & Mat, High Field Magnet Lab, NL-6525 ED Nijmegen, Netherlands
[4] Florida State Univ, Ctr Appl Superconduct, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2014年 / 27卷 / 04期
关键词：
chalcogenides; thin films; vortex phase diagram; Nernst effect; transport properties; HIGH-TEMPERATURE SUPERCONDUCTORS;
D O I：
10.1088/0953-2048/27/4/044007
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the ( H; T) vortex phase diagram up to 35 T of Fe( Se, Te) thin films deposited on CaF2 substrates as determined by resistivity, Nernst effect and critical current measurements. We found the presence of a large region where the vortex is firmly pinned, allowing the adoption of chalcogenides for low temperature but extremely high magnetic field applications. The fact that high critical current density values-larger than 1 MA cm 2 in self-field and liquid helium-are reached together with a very weak dependence on the magnetic field and a complete isotropy, joined with the very high rigidity of the vortex lattice at very high field, makes the Fe( Se, Te) phase very promising for low temperature ( 6 4.2 K) and high field ( >= 25 T) applications.
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页数：6
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