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Title: 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 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. Lastly, 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.

Authors:
 [1];  [1];  [1];  [1];  [2];  [1]
  1. Georgia State Univ., Atlanta, GA (United States). Dept. of Physics and Astronomy
  2. Federal Inst. of Technology, Zurich (Switzerland). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Georgia State Univ., Atlanta, GA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; US Army Research Office (ARO)
OSTI Identifier:
1430126
Grant/Contract Number:  
SC0001762
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Samaraweera, R. L., Liu, H. -C., Wang, Z., Reichl, C., Wegscheider, W., and Mani, R. G. Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES. United States: N. p., 2017. Web. doi:10.1038/s41598-017-05351-8.
Samaraweera, R. L., Liu, H. -C., Wang, Z., Reichl, C., Wegscheider, W., & Mani, R. G. Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES. United States. https://doi.org/10.1038/s41598-017-05351-8
Samaraweera, R. L., Liu, H. -C., Wang, Z., Reichl, C., Wegscheider, W., and Mani, R. G. Tue . "Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES". United States. https://doi.org/10.1038/s41598-017-05351-8. https://www.osti.gov/servlets/purl/1430126.
@article{osti_1430126,
title = {Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES},
author = {Samaraweera, R. L. and Liu, H. -C. and Wang, Z. and Reichl, C. and Wegscheider, W. and Mani, R. G.},
abstractNote = {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. Lastly, 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.},
doi = {10.1038/s41598-017-05351-8},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {Tue Jul 11 00:00:00 EDT 2017},
month = {Tue Jul 11 00:00:00 EDT 2017}
}

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Cited by: 18 works
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Works referencing / citing this record:

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