Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Published Version
Publication Date
3-1-2012
Journal or Book Title
Physical Review B
Volume
85
Issue
10
First Page
104525
DOI
10.1103/PhysRevB.85.104525
Abstract
75As NMR spin-lattice relaxation (1/T1) and spin-echo decay (1/T2) rate measurements were performed in a single crystal of Ba(Fe0.93Rh0.07)2As2 superconductor. Below the superconducting transition temperature Tc, when the magnetic field H is applied along the c axes, a peak in both relaxation rates is observed. Remarkably that peak is suppressed for H⊥c. Those maxima in 1/T1 and 1/T2 have been ascribed to the flux lines lattice motions and the corresponding correlation times and pinning energy barriers have been derived on the basis of a heuristic model. Further information on the flux lines motion was derived from the narrowing of 75As NMR linewidth below Tc and found to be consistent with that obtained from 1/T2 measurements. All the experimental results are described in the framework of thermally activated vortices motions.
Copyright Owner
American Physical Society
Copyright Date
2012
Language
en
File Format
application/pdf
Recommended Citation
Bossoni, L.; Carretta, P.; Thaler, A.; and Canfield, Paul C., "NMR investigation of vortex dynamics in the Ba(Fe0.93Rh0.07)(2)As-2 superconductor" (2012). Physics and Astronomy Publications. 644.
https://lib.dr.iastate.edu/physastro_pubs/644
Comments
This article is published as Bossoni, L., P. Carretta, A. Thaler, and P. C. Canfield. "NMR investigation of vortex dynamics in the Ba (Fe 0.93 Rh 0.07) 2 As 2 superconductor." Physical Review B 85, no. 10 (2012): 104525. DOI: 10.1103/PhysRevB.85.104525. Posted with permission.