Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES

Abstract Radiation-induced magnetoresistance oscillations are examined in the GaAs/AlGaAs 2D system in the regime where an observed concurrent giant magnetoresistance is systematically varied with a supplementary dc-current, I dc . The I dc tuned giant magnetoresistance is subsequently separated fro...

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Main Authors:	R. L. Samaraweera, H.-C. Liu, Z. Wang, C. Reichl, W. Wegscheider, R. G. Mani
Format:	article
Language:	EN
Published:	Nature Portfolio 2017
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/0074647655d34d5b999546f927f6ae06
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spelling	oai:doaj.org-article:0074647655d34d5b999546f927f6ae062021-12-02T16:07:56ZMutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES10.1038/s41598-017-05351-82045-2322https://doaj.org/article/0074647655d34d5b999546f927f6ae062017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05351-8https://doaj.org/toc/2045-2322Abstract Radiation-induced magnetoresistance oscillations are examined in the GaAs/AlGaAs 2D system in the regime where an observed concurrent giant magnetoresistance is systematically varied with a supplementary dc-current, I dc . The I dc tuned giant magnetoresistance is subsequently separated from the photo-excited oscillatory resistance using a multi-conduction model in order to examine the interplay between the two effects. The results show that the invoked multiconduction model describes the observed giant magnetoresistance effect even in the presence of radiation-induced magnetoresistance oscillations, the magnetoresistance oscillations do not modify the giant magnetoresistance, and the magnetoresistance oscillatory extrema, i.e., maxima and minima, disappear rather asymmetrically with increasing I dc . The results suggest the interpretation that the I dc serves to suppress scattering between states near the Fermi level in a strong magnetic field limit.R. L. SamaraweeraH.-C. LiuZ. WangC. ReichlW. WegscheiderR. G. ManiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q R. L. Samaraweera H.-C. Liu Z. Wang C. Reichl W. Wegscheider R. G. Mani Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES
description	Abstract Radiation-induced magnetoresistance oscillations are examined in the GaAs/AlGaAs 2D system in the regime where an observed concurrent giant magnetoresistance is systematically varied with a supplementary dc-current, I dc . The I dc tuned giant magnetoresistance is subsequently separated from the photo-excited oscillatory resistance using a multi-conduction model in order to examine the interplay between the two effects. The results show that the invoked multiconduction model describes the observed giant magnetoresistance effect even in the presence of radiation-induced magnetoresistance oscillations, the magnetoresistance oscillations do not modify the giant magnetoresistance, and the magnetoresistance oscillatory extrema, i.e., maxima and minima, disappear rather asymmetrically with increasing I dc . The results suggest the interpretation that the I dc serves to suppress scattering between states near the Fermi level in a strong magnetic field limit.
format	article
author	R. L. Samaraweera H.-C. Liu Z. Wang C. Reichl W. Wegscheider R. G. Mani
author_facet	R. L. Samaraweera H.-C. Liu Z. Wang C. Reichl W. Wegscheider R. G. Mani
author_sort	R. L. Samaraweera
title	Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES
title_short	Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES
title_full	Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES
title_fullStr	Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES
title_full_unstemmed	Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES
title_sort	mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the gaas/algaas 2des
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/0074647655d34d5b999546f927f6ae06
work_keys_str_mv	AT rlsamaraweera mutualinfluencebetweencurrentinducedgiantmagnetoresistanceandradiationinducedmagnetoresistanceoscillationsinthegaasalgaas2des AT hcliu mutualinfluencebetweencurrentinducedgiantmagnetoresistanceandradiationinducedmagnetoresistanceoscillationsinthegaasalgaas2des AT zwang mutualinfluencebetweencurrentinducedgiantmagnetoresistanceandradiationinducedmagnetoresistanceoscillationsinthegaasalgaas2des AT creichl mutualinfluencebetweencurrentinducedgiantmagnetoresistanceandradiationinducedmagnetoresistanceoscillationsinthegaasalgaas2des AT wwegscheider mutualinfluencebetweencurrentinducedgiantmagnetoresistanceandradiationinducedmagnetoresistanceoscillationsinthegaasalgaas2des AT rgmani mutualinfluencebetweencurrentinducedgiantmagnetoresistanceandradiationinducedmagnetoresistanceoscillationsinthegaasalgaas2des
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Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES

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