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Phys. Rev. B 63, 134434 (2001) [4 pages]

Theoretical model of an organic ferrimagnetic state for a bipartite lozenge chain

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Y. F. Duan1,2 and K. L. Yao1,3,4
1Department of Physics and State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China
2Department of the Basic Sciences, Air Force Radar College, Wuhan 430019, China
3CCAST (World Laboratory), P.O. Box 730, Beijing 100080, China
4International Center of Material Physics, Chinese Academy of Science, Shenyang 110015, China

Received 12 September 2000; published 15 March 2001

A model for one-dimensional bipartite lozenge chain is proposed. By unrestricted Hartree-Fock approximation, we find that the system should exhibit ferrimagnetic ordering for a half filled band. In the ground state, the energy levels of electrons will split off with respect to different spins and the electrons along the chain will form an antiferromagnetic spin-density wave. The ground state of the system will be more stable with increasing of the on-site Hubbard term.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.63.134434
DOI:
10.1103/PhysRevB.63.134434
PACS:
75.30.Ds, 75.50.Dd
 
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