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Article
Magnetic and structural transitions in the iron-chalcogenide high-Tc superconductor: K0.8Fe1.76Se2.00
Journal of Applied Physics
  • W. N. Rowan-Weetaluktuk, McGill University
  • D. H. Ryan, McGill University
  • J. M. Cadogan, University of Manitoba
  • R. Hu, Iowa State University
  • Sergey L. Bud'ko, Iowa State University
  • Paul C. Canfield, Iowa State University
Document Type
Article
Publication Date
1-1-2012
DOI
10.1063/1.3673848
Abstract

57Fe Mössbauer spectroscopy was used to study single-crystals of K0.8Fe1.76Se2.00 from 6 K to 673 K. At 6 K, the hyperfine field (B hf) is canted away from the c-axis by 18 ± 3°. The temperature dependence of B hf follows a spin wavemodel with a spin excitation gap of 9 ± 1 meV. A sudden increase in the linewidth and a corresponding drop in (1/2)eQVzz at TN  = 532 K are indications of strong coupling between the magnetic and structural transitions.

Comments

The following article appeared in Journal of Applied Physics 111 (2012): 07E126 and may be found at http://dx.doi.org/10.1063/1.3673848.

Rights
Copyright 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Copyright Owner
American Institute of Physics
Language
en
Date Available
2014-09-08
File Format
application/pdf
Citation Information
W. N. Rowan-Weetaluktuk, D. H. Ryan, J. M. Cadogan, R. Hu, et al.. "Magnetic and structural transitions in the iron-chalcogenide high-Tc superconductor: K0.8Fe1.76Se2.00" Journal of Applied Physics Vol. 111 Iss. 7 (2012) p. 07E126
Available at: http://works.bepress.com/paul_canfield/64/