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JETP Letters

, Volume 90, Issue 4, pp 299–302 | Cite as

Vortex structure in superconducting iron pnictide single crystals

  • L. Ya. Vinnikov
  • T. M. Artemova
  • I. S. Veshchunov
  • N. D. Zhigadlo
  • J. Karpinski
  • P. Popovich
  • D. L. Sun
  • C. T. Lin
  • A. V. Boris
Open Access
Condensed Matter

Abstract

The vortex structure in the iron pnictide single crystals Ba1−x K x Fe2As2 and Sr1−x K x Fe2As2 of the 122 type and SmFeAsO1−x F x of the 1111 type has been investigated using the decoration method. In all of the crystals under investigation, no regular vortex lattice has been revealed in the magnetic field range up to 200 Oe. The disordered vortex structure is discussed in view of the vortex pinning in single crystals.

PACS numbers

74.25.Qt 74.70.-b 74.72-h 

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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • L. Ya. Vinnikov
    • 1
  • T. M. Artemova
    • 1
    • 2
  • I. S. Veshchunov
    • 1
  • N. D. Zhigadlo
    • 3
  • J. Karpinski
    • 3
  • P. Popovich
    • 4
  • D. L. Sun
    • 4
  • C. T. Lin
    • 4
  • A. V. Boris
    • 4
    • 5
  1. 1.Institute of Solid State PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia
  2. 2.Moscow Institute of Physics and TechnologyDolgoprudnyĭ, Moscow regionRussia
  3. 3.Laboratory for Solid State PhysicsEidgenössische Technische Hochschule ZürichZürichSwitzerland
  4. 4.Max Planck Institute for Solid State ResearchStuttgartGermany
  5. 5.Department of PhysicsLoughborough UniversityLoughboroughUK

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