Based on a theoretical model proposed for quasi-one-dimensional organic polymer ferromagnets, the ground state and low-lying magnetic excitation are studied. Within Hartree-Fock approximation, the ground state of the system is shown to be a stable ferromagnetic state due to the electron-electron correlation and topological structure of the system. The random-phase approximation is employed to explore the magnon excitation and the excitation spectrum is obtained, including an acoustic mode and four optical modes. It is found that the acoustic mode possesses the characteristic of the ferromagnetic magnon.
部门归属
huazhong univ sci & technol, dept phys, wuhan 430074, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china. ccast, world lab, beijing 100080, peoples r china.;yao, kl (reprint author), huazhong univ sci & technol, dept phys, wuhan 430074, peoples r china
K. L. Yao,L. Zhao. Random phase approximation of the spin-wave excitation for quasi-one-dimensional magnetic polymer[J]. European Physical Journal B,2000,14(3):411-417.
APA
K. L. Yao,&L. Zhao.(2000).Random phase approximation of the spin-wave excitation for quasi-one-dimensional magnetic polymer.European Physical Journal B,14(3),411-417.
MLA
K. L. Yao,et al."Random phase approximation of the spin-wave excitation for quasi-one-dimensional magnetic polymer".European Physical Journal B 14.3(2000):411-417.
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