Vortex structure in FeTeSe single crystals

Vinnikov, L. Y.; Radaev, A. V.; Veshchunov, I. S.; Troshina, A. G.; Liu, Y.; Lin, C. T.; Boris, A. V.

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Vortex structure in FeTeSe single crystals

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

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

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Citation

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

Abstract

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.