Interchain Order and Ferromagnetic State in Organic Ferromagnets
WANG Wei-zhong1, YAO Kai-lun1, LIN Hai-qing2, LI Hong-tao3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Department of Physics & Research Center of Materials Science and Technology, Chinese University of Hong Kong, Hong Kong
3Department of Electronic Engineering, Dongguan Institute of Technology, Dongguan, Guangdong 511700
Interchain Order and Ferromagnetic State in Organic Ferromagnets
WANG Wei-zhong1;YAO Kai-lun1;LIN Hai-qing2;LI Hong-tao3
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
2Department of Physics & Research Center of Materials Science and Technology, Chinese University of Hong Kong, Hong Kong
3Department of Electronic Engineering, Dongguan Institute of Technology, Dongguan, Guangdong 511700
Abstract： Two kinds of alignment of two neighboring organic ferromagnetic chains are studied with Su-Schrieffer-Heeger Hamiltonian added by Hubbard repulsion and antiferromagnetic correlation between side radicals and main chain. The results show that interchain coupling makes the energy gap decreasing. The out-of-phase alignment of two chains is energetically preferred to the in-phase alignment and it is a more possible ferromagnetic structure if the oscillatory part of interchain coupling of the in-phase is small. The spin density and dimerization along the main chain are also discussed.
WANG Wei-zhong;YAO Kai-lun;LIN Hai-qing;LI Hong-tao. Interchain Order and Ferromagnetic State in Organic Ferromagnets[J]. 中国物理快报, 1999, 16(7): 538-540.
WANG Wei-zhong, YAO Kai-lun, LIN Hai-qing, LI Hong-tao. Interchain Order and Ferromagnetic State in Organic Ferromagnets. Chin. Phys. Lett., 1999, 16(7): 538-540.
1999, Vol. 16 
