Cyclotron resonance absorption of 2DEG with embedded self-organized antidots

Autor:	K. von Klitzing, Karl Eberl, Sergey Suchalkin, M. K. Zundel, Yu. B. Vasilyev, G. Nachtwei
Rok vydání:	2001
Předmět:	Electron density Materials science Condensed matter physics Cyclotron resonance Heterojunction Electron Electrical and Electronic Engineering Quantum Hall effect Condensed Matter Physics Absorption (electromagnetic radiation) Fermi gas Electronic Optical and Magnetic Materials Line (formation)
Zdroj:	Physica B: Condensed Matter. 298:230-233
ISSN:	0921-4526
DOI:	10.1016/s0921-4526(01)00308-8
Popis:	Far-infrared experiments have been performed on the two-dimensional electron gas (2DEG) of an AlGaAs/GaAs heterojunction with additional self-organized AlInAs antidot islands located at the interface. The electron density has been varied from 9×10 9 to 3×10 11 cm −2 by applying a gate voltage. In addition to the CR peak we observe a narrow line which lies above the CR peak. The width of the line is as small as 0.5 cm −1 at filling factors less than 1. In contrast to the CR peak this line displays a considerable shift toward higher energies when the electron density is increased. We discuss the observed features in terms of the formation of a correlated phase of electrons localized in local minima originating from the antidot potential and coupled via Coulomb interaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de14808835c40a2d00523202dbf16245 https://doi.org/10.1016/s0921-4526(01)00308-8 Zobrazit plný text záznamu Full Text from ScienceDirect