The electronic structures and magnetic properties of perovskite ruthenates from constrained orbital-hybridization calculations

The electronic structures and magnetic properties of perovskite ruthenates from constrained orbital-hybridization calculations
复制标题

约束轨道杂化计算钙钛矿钌酸盐的电子结构和磁性

DOI:
10.1209/0295-5075/92/57007
复制
发表时间:
2010-04
期刊:
Europhysics Letters: A Letters Journal Exploring the Frontiers of Physics
影响因子:
--
通讯作者:
XG WAN
XG WAN
中科院分区:
其他
文献类型:
--
作者:
XG WAN

文献摘要

参考文献

被引文献

相似文献

我们介绍了一种方法来分析杂交的影响,通过移动相应的原子水平使用外部的潜力。基于这种方法,我们研究了钙钛矿型钌酸盐,并明确确定A位阳离子和O离子之间的共价性改变了Ru-O杂化并改变了费米能级处的态密度,从而显著影响磁性。研究了压力对SrRuO 3的Ru-O-Ru键角的影响,发现静水压对Ru-O键角的影响很小,但却显著减小了Ru-O键长,增加了能带宽度.因此,磁有序温度将随压力单调下降。
We introduce a method to analyze the effect of hybridization by shifting the corresponding atomic levels using external potentials. Based on this approach, we study perovskite ruthenates, and unambiguously identify that the covalency between the A-site cation and the O ion modifies the Ru-O hybridization and change the density of state at the Fermi level, consequently affecting the magnetic properties significantly. We also study the effect of pressure and reveal that hydrostatic pressure has a small effect on the Ru-O-Ru bond angle of SrRuO3, while it decreases the Ru-O length and increase the band width significantly. Therefore, the magnetic-ordering temperature will decrease monotonically with pressure.
DOI: 10.1103/physrevlett.103.057201
发表时间: 2009-07-31
影响因子: 8.6
作者:
Chang, Young Jun;Kim, Choong H.;Noh, T. W.
通讯作者: Noh, T. W.
DOI: 10.1016/s0022-4596(03)00386-4
发表时间: 2004
影响因子: 3.3
作者:
R. Vidya;P. Ravindran;A. Kjekshus;H. Fjellvåg;B. Hauback
通讯作者: R. Vidya;P. Ravindran;A. Kjekshus;H. Fjellvåg;B. Hauback
DOI: 10.1017/cbo9781139207249.009
发表时间: 2012
期刊: --
影响因子: --
作者:
W. Marsden
通讯作者: W. Marsden
DOI: 10.1103/physrevb.77.104410
发表时间: 2008-03
期刊: Physical Review B
影响因子: 3.7
作者:
J. Piętosa;B. Dabrowski;A. Wisniewski;R. Puźniak;R. Kiyanagi;T. Maxwell;J. Jorgensen
通讯作者: J. Piętosa;B. Dabrowski;A. Wisniewski;R. Puźniak;R. Kiyanagi;T. Maxwell;J. Jorgensen
DOI: --
发表时间: 2010-04
期刊: --
影响因子: --
作者:
X. Wan;Jian Zhou;J. Dong
通讯作者: X. Wan;Jian Zhou;J. Dong