Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations
Abstract We study the current scaling of the oscillatory magnetoresistance peak height in microwave induced magnetoresistance oscillations, over the temperature range $$0.35 \le T \le 1.25\,\,{\rm K}$$ , by examining the change in response observed under a supplementary $$I_{DC}$$ current bias, when...
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| Format: | Article |
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Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-11661-z |
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| author | Rameshwor Poudel U. Kushan Wijewardena Tharanga N. Nanayakkara Annika Kriisa Christian Reichl Werner Wegscheider Ramesh G. Mani |
| author_facet | Rameshwor Poudel U. Kushan Wijewardena Tharanga N. Nanayakkara Annika Kriisa Christian Reichl Werner Wegscheider Ramesh G. Mani |
| author_sort | Rameshwor Poudel |
| collection | DOAJ |
| description | Abstract We study the current scaling of the oscillatory magnetoresistance peak height in microwave induced magnetoresistance oscillations, over the temperature range $$0.35 \le T \le 1.25\,\,{\rm K}$$ , by examining the change in response observed under a supplementary $$I_{DC}$$ current bias, when the $$I_{DC}$$ also produces an overall giant negative magnetoresistance in the high mobility GaAs/AlGaAs system. A “universality” is observed in the decay of the magnetoresistance peak height over the examined temperatures, sizes, and applied $$I_{DC}$$ . The results suggest that the photoexcited resistance maxima are sensitive not to the DC current, but rather to the current density $$j_{DC}= I_{DC}/W.$$ |
| format | Article |
| id | doaj-art-7f5472b5508a4cddac27265b5364d7c7 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-7f5472b5508a4cddac27265b5364d7c72025-08-20T03:45:48ZengNature PortfolioScientific Reports2045-23222025-07-0115111210.1038/s41598-025-11661-zCurrent scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillationsRameshwor Poudel0U. Kushan Wijewardena1Tharanga N. Nanayakkara2Annika Kriisa3Christian Reichl4Werner Wegscheider5Ramesh G. Mani6Department of Physics and Astronomy, Georgia State UniversityDepartment of Physics and Astronomy, Georgia State UniversityDepartment of Physics and Astronomy, Georgia State UniversityDepartment of Physics and Astronomy, Georgia State UniversityLaboratorium für Festkörperphysik, ETH ZürichLaboratorium für Festkörperphysik, ETH ZürichDepartment of Physics and Astronomy, Georgia State UniversityAbstract We study the current scaling of the oscillatory magnetoresistance peak height in microwave induced magnetoresistance oscillations, over the temperature range $$0.35 \le T \le 1.25\,\,{\rm K}$$ , by examining the change in response observed under a supplementary $$I_{DC}$$ current bias, when the $$I_{DC}$$ also produces an overall giant negative magnetoresistance in the high mobility GaAs/AlGaAs system. A “universality” is observed in the decay of the magnetoresistance peak height over the examined temperatures, sizes, and applied $$I_{DC}$$ . The results suggest that the photoexcited resistance maxima are sensitive not to the DC current, but rather to the current density $$j_{DC}= I_{DC}/W.$$https://doi.org/10.1038/s41598-025-11661-z |
| spellingShingle | Rameshwor Poudel U. Kushan Wijewardena Tharanga N. Nanayakkara Annika Kriisa Christian Reichl Werner Wegscheider Ramesh G. Mani Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations Scientific Reports |
| title | Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations |
| title_full | Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations |
| title_fullStr | Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations |
| title_full_unstemmed | Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations |
| title_short | Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations |
| title_sort | current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations |
| url | https://doi.org/10.1038/s41598-025-11661-z |
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