Effective mass of composite fermions: A phenomenological fit to the anomalous propagation of a surface acoustic wave
文献类型：期刊论文
| 作者 | Yu, Y ; Su, ZB; Yu, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2000 |
| 卷号 | 61期号:4页码:2855-2862 |
| 关键词 | Quantum Hall States Filled Landau-level v = 1/2 Field-theory Particles Systems Gauge |
| ISSN号 | 1098-0121 |
| 英文摘要 | We calculate the conductivity associated with the anomalous propagation of a surface acoustic wave above a two-dimensional electron gas at nu=1/2. Murthy-Shankar's middle representation is adopted, and a contribution to the response functions beyond the random-phase approximation is taken into account. We give a phenomenological fit for the effective mass of a composite fermion, with experimental data for the anomalous propagation of surface acoustic wave at nu=1/2, and find that the phenomenological value of the effective mass is several times larger than the theoretical value m(th)*=6 epsilon/e(2)l(1/2) derived from the Hartree-Fock approximation. We compare the phenomenological value of the composite fermion effective mass with that measured in experiments for the activation energy and the Shubnikov-de Haas oscillations. It is found that the comparison is fairly good. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000085348300070 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13027]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Yu, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Yu, Y,Su, ZB,Yu, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.. Effective mass of composite fermions: A phenomenological fit to the anomalous propagation of a surface acoustic wave[J]. PHYSICAL REVIEW B,2000,61(4):2855-2862. |
| APA | Yu, Y,Su, ZB,&Yu, Y , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2000).Effective mass of composite fermions: A phenomenological fit to the anomalous propagation of a surface acoustic wave.PHYSICAL REVIEW B,61(4),2855-2862. |
| MLA | Yu, Y,et al."Effective mass of composite fermions: A phenomenological fit to the anomalous propagation of a surface acoustic wave".PHYSICAL REVIEW B 61.4(2000):2855-2862. |
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来源：理论物理研究所
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