Dependence of Modulation Amplitude on Electron Density in Unidirectional Lateral Superlattices: The Effect of the Thickness of the Two-dimensional Electron Gas
| dc.creator | Endo, Akira | |
| dc.creator | Iye, Yasuhiro | |
| dc.date | 2005-02-21 | |
| dc.date.accessioned | 2026-07-07T03:03:50Z | |
| dc.date.available | 2026-07-07T03:03:50Z | |
| dc.description | The amplitude V_0 of unidirectional periodic potential modulation introduced by a surface grating into a two-dimensional electron gas (2DEG) formed at AlGaAs/GaAs heterointerface is measured as a function of electron density n_e by analyzing commensurability oscillation of the magnetoresistance. The electron density is varied either by applying a bias to a metallic back gate or by illumination. The amplitude decreases with increasing density, with the rate |dV_0/dn_e| roughly an order of magnitude larger for the former method. The result is interpreted in terms of the rate, dE_1/d(delta E_c), of the change in the first subband level E_1 in response to the variation of the conduction-band edge delta E_c above the heterointerface. The rate crucially depends on the thickness of the 2DEG. | |
| dc.description | 9 pages, 7 figures, LaTeX2e with jpsj2 class | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0502492 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0502492 | |
| dc.identifier | J. Phys. Soc. Jpn. 74, 1792 (2005) | |
| dc.identifier | doi:10.1143/JPSJ.74.1792 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/25902 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Dependence of Modulation Amplitude on Electron Density in Unidirectional Lateral Superlattices: The Effect of the Thickness of the Two-dimensional Electron Gas | |
| dc.type | text |