Pressure-Induced Phase Transition to a Novel Spin State in Striped Nickelates

被引：3
|
作者：
Kaneshita, Eiji [1 ]
Bishop, Alan R. [2 ]
机构：
[1] Argonne Natl Lab, Argonne, IL 60439 USA
[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2008年 / 77卷 / 12期
关键词：
stripes; nickelate; pressure effect; local mode; phonon;
D O I：
10.1143/JPSJ.77.123709
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We analyze pressure effects on stripe states within a selfconsistent Hartree-Fock calculation for a model of a striped nickelates. The results show a transition induced by high pressure and predict possible new spin states. We describe characteristics in the phonon excitations at the predicted transition, based on a real-space random phase approximation.
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页数：4
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