期刊
NEW JOURNAL OF PHYSICS
卷 11, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/11/7/075004
关键词
-
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据