Surface acoustic wave study of a double layer AlGaAs/GaAs 2D hole system

Autor:	M.R. Gates, Mohamed Henini, J.R. Middleton, Christopher J. Mellor, R.B. Dunford, J.S. Chauhan, V. W. Rampton
Rok vydání:	2001
Předmět:	Double layer (biology) Algaas gaas Materials science Condensed matter physics Magnetoresistance Surface acoustic wave Frequency dependence Electrical and Electronic Engineering Quantum Hall effect Condensed Matter Physics Thermal conduction Maxima Electronic Optical and Magnetic Materials
Zdroj:	Physica B: Condensed Matter. 298:70-73
ISSN:	0921-4526
DOI:	10.1016/s0921-4526(01)00262-9
Popis:	The temperature and frequency dependence of the surface acoustic wave (SAW) velocity shift has been studied in a double layer 2DHS for 0.34–4.2 K and 112–560 MHz. The measured velocity shift has been compared to the velocity shift calculated from conventional transport techniques. At ν =1, 2, 4, 6 and 8 maxima in SAW velocity shift have been detected. A hysteretic feature at ν =2 has been observed in both conventional magnetotransport and SAW measurements, which is probably due to slight parallel conduction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0f45a64edac0eb300e848c0adf42b66a https://doi.org/10.1016/s0921-4526(01)00262-9 Zobrazit plný text záznamu Full Text from ScienceDirect