Organic Ferromagnetism of the Quasi-Two-Dimensional Hydrocarbon
Organic Ferromagnetism of the Quasi-Two-Dimensional Hydrocarbon
复制标题
准二维烃的有机铁磁性
DOI：
10.1080/10587259308054947
复制
发表时间：
1993
影响因子：
0.7
通讯作者：
A. Mishima
中科院分区：
文献类型：
--
作者：
A. Mishima
摘要提出了一种新的准二维烃作为有机铁磁体的模型。这种化合物是由碳原子连接的碳原子网络。巡回的π电子通过网络和桥位的相同碳原子上的库仑斥力相互作用。桥联碳原子上的π电子通过铁磁交换相互作用耦合非键局域电子。在平均场理论下，利用周期边界条件，用近藤-哈伯德模型研究了这个π-电子系统。计算了总能量、能带和自旋密度。结果表明，通过铁磁交换相互作用、反铁磁关联和该化合物的拓扑结构，铁磁基态比非磁性基态更加稳定。
Abstract A new quasi-two-dimensional hydrocarbon is proposed as a model of organic ferromagnets. This compound is the carbon-atom network bridged by carbon atoms. The itinerant π electrons interact through the Coulomb repulsion on the same carbon atom of network and bridging sites. The π electron at bridging carbon atom couples the nonbonding-localized elecron through the ferromagnetic-exchange interaction. This π-electron system is studied by a Kondo-Hubbard model within the mean-field theory using the periodic-boundary condition. The total energy, the energy bands, and the spin densities have been computed. It turns out that the ferromagnetic ground state is stabilized than the nonmagnetic one through the ferromagnetic-exchange interaction, the antiferromagnetic correlation, and the topological structure of this compound.
影响因子：
2.8
作者：
G. Habermehl
通讯作者：
G. Habermehl