Journal
PHYSICAL REVIEW B
Volume 79, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.052504
Keywords
arsenic alloys; calcium alloys; electric field gradient; electron density; iron alloys; Knight shift; magnetic transitions; spin-lattice relaxation
Ask authors/readers for more resources
We report As-75 nuclear magnetic resonance (NMR) data in a single crystal of CaFe2As2. The Knight shift, electric field gradient, and spin-lattice relaxation rate are strongly temperature dependent in the paramagnetic state and change discontinuously at the structural transition temperature, T-S=T-N=167 K. Immediately below, the NMR spectra reveal an internal field at the As site associated with the presence of a commensurate magnetic order. These results indicate that the structural and magnetic transitions in CaFe2As2 are first order and strongly coupled, and that the electron density in the FeAs plane is highly sensitive to the out-of-plane structure.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available