Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Published Version
Publication Date
5-1-2010
Journal or Book Title
Physical Review B
Volume
81
Issue
18
First Page
180506(R)
DOI
10.1103/PhysRevB.81.180506
Abstract
CaFe2As2 single crystals under uniaxial pressure applied along the c axis exhibit the coexistence of several structural phases at low temperatures. We show that the room-temperature tetragonal phase is stabilized at low temperatures for pressures above 0.06 GPa, and its weight fraction attains a maximum in the region where superconductivity is observed under applied uniaxial pressure. Simultaneous resistivity measurements strongly suggest that this phase is responsible for the superconductivity in CaFe2As2 found below 10 K in samples subjected to nonhydrostatic pressure conditions.
Copyright Owner
American Physical Society
Copyright Date
2010
Language
en
File Format
application/pdf
Recommended Citation
Prokeš, K.; Kreyssig, A.; Ouladdiaf, B.; Pratt, D. K.; Ni, N.; Bud’ko, Sergey L.; Canfield, Paul C.; McQueeney, Robert J.; Argyriou, D. N.; and Goldman, Alan, "Evidence from neutron diffraction for superconductivity in the stabilized tetragonal phase of CaFe2As2 under uniaxial pressure" (2010). Physics and Astronomy Publications. 693.
https://lib.dr.iastate.edu/physastro_pubs/693
Comments
This article is published as Prokeš, K., A. Kreyssig, B. Ouladdiaf, D. K. Pratt, N. Ni, S. L. Bud’Ko, P. C. Canfield, R. J. McQueeney, D. N. Argyriou, and A. I. Goldman. "Evidence from neutron diffraction for superconductivity in the stabilized tetragonal phase of CaFe 2 As 2 under uniaxial pressure." Physical Review B 81, no. 18 (2010): 180506(R). DOI: 10.1103/PhysRevB.81.180506. Posted with permission.