Observation of Antiferromagnetic Nuclear Resonance of Cu in YBa2Cu3O6
Observation of Antiferromagnetic Nuclear Resonance of Cu in YBa2Cu3O6
复制标题
YBa2Cu3O6中Cu的反铁磁共振观察
DOI：
10.1143/jpsj.57.2659
复制
发表时间：
1988
影响因子：
1.7
通讯作者：
K. Kosuge
中科院分区：
文献类型：
--
作者：
H. Yasuoka;T. Shimizu;Y. Ueda;K. Kosuge
在高温超导氧化物YBa2Cu3O6中，观察到Cu的零场反铁磁核共振（AFNR），63Cu和65Cu的AFNR分别为89.89± 0.05MHz和96.29± 0.05MHz，四极子分裂较好.这些频率对应于79.65±0.05 KOe的超精细场。通过对无塞曼分裂的65Cu和63Cu在30.11± 0.2MHz和27.88± 0.02MHz处的AFNR谱分析和NQR观测，得出反铁磁峰只存在于CuO2平面位置，磁矩方向垂直于c轴的结论.这与中子衍射研究提出的自旋结构是一致的。对核的弛豫行为也作了简要的讨论。
The zero-field antiferromagnetic nuclear resonance (AFNR) of Cu in the high- T c related oxide YBa 2 Cu 3 O 6 has been observed at 89.89±0.05 MHz for 63 Cu and 96.29±0.05 MHz for 65 Cu with well articulated quadrupole splittings at 1.3 K. These frequencies correspond to a hyperfine field of 79.65±0.05 KOe. From the analysis of the AFNR spectrum and the observation of NQR at 30.11±0.2 MHz for 65 Cu and 27.88±0.02 MHz for 63 Cu, both of which have no Zeeman splitting, it is concluded that the antiferromagnetic mounents reside only on the CuO 2 plane sites and the direction of moments is perpendicular to the c -axis. This is consistent with the spin structure proposed by neutron diffraction studies. The nuclear relaxation behavior is also discussed briefly.