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

Journal Article · · Scientific Reports
 [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

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.

Research Organization:
Georgia State Univ., Atlanta, GA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; US Army Research Office (ARO)
Grant/Contract Number:
SC0001762
OSTI ID:
1430126
Journal Information:
Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (11)

Influence of Microwave Excitation‐Power on the Narrow Negative Magnetoresistance Effect Around B  = 0 T in the Ultra‐High Mobility GaAs/AlGaAs 2DES journal February 2019
Coherent backscattering in quasi-ballistic ultra-high mobility GaAs/AlGaAs 2DES journal July 2018
Cyclotron resonance in the high mobility GaAs/AlGaAs 2D electron system over the microwave, mm-wave, and terahertz- bands journal February 2019
Radiation-induced magnetoresistance oscillations in monolayer and bilayer graphene journal May 2019
Microscopic model for radiation-induced magnetoresistance oscillations excited by circularly polarized radiation journal July 2019
Study of narrow negative magnetoresistance effect in ultra-high mobility GaAs/AlGaAs 2DES under microwave photo-excitation journal January 2020
Cyclotron resonance in the high mobility GaAs/AlGaAs 2D electron system over the microwave, mm-wave, and terahertz- bands text January 2019
Study of narrow negative magnetoresistance effect in ultra-high mobility GaAs/AlGaAs 2DES under microwave photo-excitation text January 2020
Magnetoresistance and robust resistivity plateau in MoAs2 journal November 2017
B-periodic oscillations in the Hall-resistance induced by a dc-currentbias under combined microwave-excitation and dc-current bias in the GaAs/AlGaAs 2D system text January 2018
Radiation-induced resistance oscillations in 2D electron systems with strong Rashba coupling preprint January 2017