Electronic states of a two-dimensional electron system in a lateral superlattice and a perpendicular magnetic field
文献类型：期刊论文
| 作者 | Wu XG |
| 刊名 | physical review b
 |
| 出版日期 | 1997 |
| 卷号 | 56期号:24页码:15744-15751 |
| ISSN号 | 0163-1829 |
| 关键词 | QUASI-CLASSICAL CALCULATION QUANTUM-DOT ARRAYS MAGNETORESISTANCE OSCILLATIONS COLLECTIVE EXCITATIONS BAND-STRUCTURE PERIODIC POTENTIALS WAVE-FUNCTIONS GAS MODULATION MAGNETOTRANSPORT |
| 通讯作者 | wu xg,chinese acad sci,inst semicond,nlsm,beijing 100083,peoples r china. |
| 中文摘要 | the electronic state of a two-dimensional electron system (2des) in the presence of a perpendicular uniform magnetic field and a lateral superlattice (ls) is investigated theoretically. a comparative study is made between a ls induced by a spatial electrostatic potential modulation (referred to as a pmls) and that induced by a spatial magnetic-field modulation (referred ro asa mmls). by utilizing a finite-temperature self-consistent hartree-fock approximation scheme; the dependence of the electronic state on different system parameters (e.g., the modulation period, the modulation strength, the effective electron-electron interaction strength, the averaged electron density, and the system temperature) is studied in detail. the inclusion of exchange effect is found to bring qualitative changes to the electronic state of a pmls, leading generally to a nonuniform spin splitting, and consequently the behavior of the electronic state becomes similar to that of a mmls. the landau-level coupling is taken into account, and is found to introduce some interesting features not observed before. it is also found that, even in the regime of intermediate modulation strength, the density dependence of the spin splitting of energy levels, either for a pmls or a mmls, can be qualitatively understood within the picture of a 2des in a perpendicular magnetic field with the modulation viewed as a perturbation. [s0163-1829(97)02248-0]. |
| 学科主题 | 半导体物理 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2010-08-12 |
| 源URL | [http://ir.semi.ac.cn/handle/172111/13292]  |
| 专题 | 半导体研究所_中国科学院半导体研究所（2009年前） |
| 推荐引用方式 GB/T 7714 | Wu XG. Electronic states of a two-dimensional electron system in a lateral superlattice and a perpendicular magnetic field[J]. physical review b,1997,56(24):15744-15751. |
| APA | Wu XG.(1997).Electronic states of a two-dimensional electron system in a lateral superlattice and a perpendicular magnetic field.physical review b,56(24),15744-15751. |
| MLA | Wu XG."Electronic states of a two-dimensional electron system in a lateral superlattice and a perpendicular magnetic field".physical review b 56.24(1997):15744-15751. |
入库方式： OAI收割
来源：半导体研究所
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