Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Published Version
Publication Date
4-1-2012
Journal or Book Title
Physical Review B
Volume
85
Issue
14
First Page
144509
DOI
10.1103/PhysRevB.85.144509
Abstract
The effect of uniaxial tensile stress and the resultant strain on the structural/magnetic transition in the parent compound of the iron arsenide superconductor BaFe2As2 is characterized by temperature-dependent electrical resistivity, x-ray diffraction, and quantitative polarized light imaging. We show that strain induces a measurable uniaxial structural distortion above the first-order magnetic transition and significantly smears the structural transition. This response is different from that found in another parent compound, SrFe2As2, where the coupled structural and magnetic transitions are strongly first order. This difference in the structural responses explains the in-plane resistivity anisotropy above the transition in BaFe2As2. This conclusion is supported by the Ginzburg-Landau-type phenomenological model for the effect of the uniaxial strain on the resistivity anisotropy.
Copyright Owner
American Physical Society
Copyright Date
2012
Language
en
File Format
application/pdf
Recommended Citation
Blomberg, E. C.; Kreyssig, Andreas; Tanatar, Makariy A.; Fernandes, R. M.; Kim, M. G.; Thaler, A.; Schmalian, J.; Bud’ko, Sergey L.; Canfield, Paul C.; Goldman, Alan I.; and Prozorov, Ruslan, "Effect of tensile stress on the in-plane resistivity anisotropy in BaFe2As2" (2012). Physics and Astronomy Publications. 651.
https://lib.dr.iastate.edu/physastro_pubs/651
Comments
This article is published as Blomberg, E. C., A. Kreyssig, M. A. Tanatar, R. M. Fernandes, M. G. Kim, A. Thaler, J. Schmalian, S. L. Bud'ko, P. C. Canfield, A. I. Goldman, and R. Prozorov. "Effect of tensile stress on the in-plane resistivity anisotropy in BaFe 2 As 2." Physical Review B 85, no. 14 (2012): 144509. DOI: 10.1103/PhysRevB.85.144509. Posted with permission.