Journal
NEW JOURNAL OF PHYSICS
Volume 11, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/11/7/075004
Keywords
-
Categories
Ask authors/readers for more resources
We present As-75 nuclear magnetic resonance data in the paramagnetic and magnetic states of single-crystal CaFe2As2. The electric field gradient and the internal magnetic field at the As sites change discontinuously below the first-order structural transition at T-0 = 169 K. In the magnetic state, we find a single value of the internal hyperfine field consistent with commensurate antiferromagnetic order of Fe moments pointing in the ab plane. The spin lattice relaxation rate shows Korringa behavior for T less than or similar to T-0/3, reflecting the metallic nature of the ordered state. Surprisingly, T-1(-1) exhibits a small peak at 10 K, revealing the presence of slow spin fluctuations that may be associated with domain wall motion.
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