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Journal Article

Vortex structure in FeTeSe single crystals


Lin,  C. T.
Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society;


Boris,  A. V.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Vinnikov, L. Y., Radaev, A. V., Veshchunov, I. S., Troshina, A. G., Liu, Y., Lin, C. T., et al. (2011). Vortex structure in FeTeSe single crystals. JETP Letters, 93(5), 287-289.

Cite as: https://hdl.handle.net/21.11116/0000-000E-BE49-B
Vortex structure in FeTe(0.66)Se(0.44) and FeTe(0.6)Se(0.4) single crystals with T (c) similar to 11.7 and 14.5 K, respectively, has been studied using the decoration technique. It has been found that in single crystals with the simplest crystalline structure of 11-family iron-containing superconductors (without interlayers), no regular vortex lattice is observed, similar to the case of the previously studied 122 and 1111 families. Using transmission electron microscopy, the dislocation structure with a density of similar to 10(9) cm(-2) has been observed. The problem of pinning in iron-containing superconductor single crystals is discussed.