| Spin-Peierls系统中的元激发谱 |
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| 引用本文： | 徐靖,王治国.Spin-Peierls系统中的元激发谱[J].周口师范学院学报,2000(2). |
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| 作者姓名： | 徐靖 王治国 |
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| 作者单位： | 山西省雁北师范学院物理系!山西大同037000(徐靖)，同济大学物理系!上海市200000(王治国) |
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| 摘 要： | 用玻色化方法和量子自洽方法研究了Spin -Peierls系统的元激发谱 ,分别计算和讨论了二聚化相的基态和单粒子激发态的能量以及阻挫对其低能行为的影响 .结果表明 ,随着阻挫的增大 ,Spin -Peierls系统中的基态能量会逐渐减小 ,单粒子激发态能隙增大
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| 关 键 词： | Spin-Peierls系统 玻色化 量子自洽方法 阻挫 |
The Elementary Excitation in Spin Peierls System |
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| XU Jing ,WANG Zhi guo.The Elementary Excitation in Spin Peierls System[J].Journal of Zhoukou Normal University,2000(2). |
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| Authors: | XU Jing WANG Zhi guo |
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| Institution: | XU Jing 1,WANG Zhi guo 2 |
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| Abstract: | Using bosonization and quantum self-consistent method,the elementary excitation of Spin-Peierls(SP)system is studied. We calculate and discuss ground state and the one-particle excited state of the SP system. By analyzing the self-consistent equation of K, we obtain that the SP system exhibits two phases, i.e. gapful dimerized phase and gapless antiferromagnetic phase. The variation of the ground state and energy gap with frustration parameter has also been investigated. |
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| Keywords: | Spin-Peierls system bosonization quantum self-consistent method frustration |
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