Title
57-Fe Mössbauer study of magnetic ordering in superconducting K0.80Fe1.76Se2.00 single crystals
Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Published Version
Publication Date
3-1-2011
Journal or Book Title
Physical Review B
Volume
83
Issue
10
First Page
104526
DOI
10.1103/PhysRevB.83.104526
Abstract
The magnetic ordering of superconducting single crystals of K0.80Fe1.76Se2.00 has been studied between 10 and 550 K using 57Fe Mössbauer spectroscopy. Despite being superconducting below Tsc~30 K, the iron sublattice in K0.80Fe1.76Se2.00 clearly exhibits magnetic order from well below Tsc to its Néel temperature of TN=532±2 K. The iron moments are ordered almost parallel to the crystal c axis. The order collapses rapidly above 500 K and the accompanying growth of a paramagnetic component suggests that the magnetic transition may be first order, which may explain the unusual temperature dependence reported in recent neutron diffraction studies.
Copyright Owner
American Physical Society
Copyright Date
2011
Language
en
File Format
application/pdf
Recommended Citation
Ryan, D. H.; Rowan-Weetaluktuk, W. N.; Cadogan, J. M.; Hu, R.; Straszheim, Warren E.; Bud’ko, Sergey L.; and Canfield, Paul C., "57-Fe Mössbauer study of magnetic ordering in superconducting K0.80Fe1.76Se2.00 single crystals" (2011). Physics and Astronomy Publications. 658.
https://lib.dr.iastate.edu/physastro_pubs/658
Comments
This article is published as Ryan, D. H., W. N. Rowan-Weetaluktuk, J. M. Cadogan, R. Hu, W. E. Straszheim, S. L. Bud’ko, and P. C. Canfield. "57 Fe Mössbauer study of magnetic ordering in superconducting K0.80Fe1.76Se2.00 single crystals." Physical Review B 83, no. 10 (2011): 104526. DOI: 10.1103/PhysRevB.83.104526. Posted with permission.