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Review of Scientific Instruments : Radio-frequency reflectometry on large gated two-dimensional systems

By L. J. Taskinen, R. P. Starrett, T. P. Martin, A. P. Micolich, A. R. Hamilton et al

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Book Id: WPLBN0002169705
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 1 December 2008

Title: Review of Scientific Instruments : Radio-frequency reflectometry on large gated two-dimensional systems  
Author: L. J. Taskinen, R. P. Starrett, T. P. Martin, A. P. Micolich, A. R. Hamilton et al
Volume: Issue : December 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Review of Scientific Instruments Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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Taskinen, R. P. Starrett, T. P. Martin, A. P. Micolich, A. R. Hamilton Et A, L. J. (n.d.). Review of Scientific Instruments : Radio-frequency reflectometry on large gated two-dimensional systems. Retrieved from http://community.ebooklibrary.org/


Description
Description: We have embedded an AlGaAs/GaAs based, gated two-dimensional (2D) hole system (2DHS) into an impedance transformer LC circuit and show that by using radio-frequency reflectometry it is possible to perform sensitive, large bandwidth, electrical resistance measurements of 2D systems at millikelvin temperatures. We construct a simple lumped element model where the gated 2DHS is described as a resistive transmission line. The model gives a qualitative understanding of the experimental results. As an example, we use our method to map out the Landau level evolution in a 2DHS as a function of magnetic field and gate voltage.

 

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