Direct Observation of Orbital Order in Manganites by MEM Charge-Density Study
Direct Observation of Orbital Order in Manganites by MEM Charge-Density Study
复制标题
通过 MEM 电荷密度研究直接观察锰酸盐中的轨道秩序
DOI:
10.1143/jpsj.68.2190
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发表时间:
1999
影响因子:
1.7
通讯作者:
Y. Moritomo
中科院分区:
文献类型:
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作者:
M. Takata;E. Nishibori;K. Kato;M. Sakata;Y. Moritomo
We have investigated the charge-density distribution of an antiferromagnetic bi-layered manganite, NdSr 2 Mn 2 O 7 , by the maximum entropy method (MEM) using the synchrotron X-ray powder data. The magnetic structure below T N =150 K is known to be a layered-type (A-type). We have found a significant change of the electron distribution around the Mn site below T N . Our observation indicates d x 2 - y 2 -orbital polarization in the A-type antiferromagnetic state.
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