Upper fields and critical current density of K0.58Fe1.56Se2 single crystals grown by one step technique

Zhaoshun Gao; Yanpeng Qi; Lei Wang; Chao Yao; Dongliang Wang; Xianping Zhang; Yanwei Ma

Upper fields and critical current density of K0.58Fe1.56Se2 single crystals grown by one step technique

Superconductivity 2011-03-17 v2

Authors: Zhaoshun Gao , Yanpeng Qi , Lei Wang , Chao Yao , Dongliang Wang , Xianping Zhang , Yanwei Ma

Abstract

Single crystals of K0.58Fe1.56Se2 were successfully synthesized by a new single step process with the onset superconducting transition temperatures 31.9 K. The x-ray diffraction patterns suggest that they have high crystalline quality and c-axis orientation. A possible modulation structure of Fe-vacancy along c axis was observed. The upper critical field has been determined with the magnetic field along ab-plane and c-axis, yielding an anisotropy of about 3.3. It has also been shown that the critical current density of the K0.58Fe1.56Se2 is about 1.7x10^4 A/cm^2 at 5 K.

Keywords

K0.58Fe1.56Se2 single crystal upper critical field critical current density superconducting transition temperature Fe-vacancy modulation

Cite

@article{arxiv.1103.2904,
  title  = {Upper fields and critical current density of K0.58Fe1.56Se2 single crystals grown by one step technique},
  author = {Zhaoshun Gao and Yanpeng Qi and Lei Wang and Chao Yao and Dongliang Wang and Xianping Zhang and Yanwei Ma},
  journal= {arXiv preprint arXiv:1103.2904},
  year   = {2011}
}

Comments

14 pages, 6 figures. The damaged figures (fig.1 and fig.5) during the PDF file conversion were updated in the new version

Upper fields and critical current density of K0.58Fe1.56Se2 single crystals grown by one step technique

Abstract

Keywords

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