期刊
PHYSICAL REVIEW B
卷 87, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.140406
关键词
-
资金
- Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy
- NSF [DMR-0856234, EPS-0814194]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0856234] Funding Source: National Science Foundation
- EPSCoR
- Office Of The Director [814194] Funding Source: National Science Foundation
We report a single-crystal neutron diffraction study of the layered Sr2IrO4. This work unambiguously determines the magnetic structure of the system and reveals that the spin orientation rigidly tracks the staggered rotation of the IrO6 octahedra in Sr2IrO4. The long-range antiferromagnetic order has a canted spin configuration with an ordered moment of 0.208(3) mu(B)/Ir site within the basal plane; a detailed examination of the spin canting yields 0.202(3) and 0.049(2) mu B/site for the a axis and the b axis, respectively. It is intriguing that forbidden nuclear reflections of space group I4(1)/acd are also observed in a wide temperature range from 4 K to 600 K, which suggests a reduced crystal structure symmetry. This neutron-scattering work provides a direct, well-refined experimental characterization of the magnetic and crystal structures that are crucial to the understanding of the unconventional magnetism exhibited in this unusual magnetic insulator. DOI: 10.1103/PhysRevB.87.140406
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