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微波辐射诱导磁阻振荡中磁阻峰的当前标度。

Current scaling of the magnetoresistance peaks in the microwave radiation induced magnetoresistance oscillations.

作者信息

Poudel Rameshwor, Wijewardena U Kushan, Nanayakkara Tharanga N, Kriisa Annika, Reichl Christian, Wegscheider Werner, Mani Ramesh G

机构信息

Department of Physics and Astronomy, Georgia State University, Atlanta, GA, 30303, USA.

Laboratorium für Festkörperphysik, ETH Zürich, 8093, Zurich, Switzerland.

出版信息

Sci Rep. 2025 Jul 25;15(1):27171. doi: 10.1038/s41598-025-11661-z.

DOI:10.1038/s41598-025-11661-z
PMID:40715328
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12297488/
Abstract

We study the current scaling of the oscillatory magnetoresistance peak height in microwave induced magnetoresistance oscillations, over the temperature range [Formula: see text], by examining the change in response observed under a supplementary [Formula: see text] current bias, when the [Formula: see text] 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 [Formula: see text]. The results suggest that the photoexcited resistance maxima are sensitive not to the DC current, but rather to the current density [Formula: see text].

摘要

我们通过研究在附加的[公式：见原文]电流偏置下观察到的响应变化，来研究在[公式：见原文]温度范围内，微波诱导磁电阻振荡中振荡磁电阻峰值高度的当前标度，此时[公式：见原文]在高迁移率GaAs/AlGaAs系统中也会产生整体巨大的负磁电阻。在所研究的温度、尺寸和施加的[公式：见原文]范围内，磁电阻峰值高度的衰减呈现出一种“普适性”。结果表明，光激发电阻最大值对直流电流不敏感，而是对电流密度[公式：见原文]敏感。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/e16a1decf6ee/41598_2025_11661_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/94243ef717a6/41598_2025_11661_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/df4f59bdd075/41598_2025_11661_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/b86d83de2931/41598_2025_11661_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/acdfc4258b09/41598_2025_11661_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/3118534d0716/41598_2025_11661_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/e16a1decf6ee/41598_2025_11661_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/94243ef717a6/41598_2025_11661_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/df4f59bdd075/41598_2025_11661_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/b86d83de2931/41598_2025_11661_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/acdfc4258b09/41598_2025_11661_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/3118534d0716/41598_2025_11661_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d885/12297488/e16a1decf6ee/41598_2025_11661_Fig6_HTML.jpg

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本文引用的文献

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Mutual influence between current-induced giant magnetoresistance and radiation-induced magnetoresistance oscillations in the GaAs/AlGaAs 2DES.
在 GaAs/AlGaAs 2DES 中，电流诱导的巨磁电阻与辐射诱导的磁电阻振荡的相互影响。
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Tunable electron heating induced giant magnetoresistance in the high mobility GaAs/AlGaAs 2D electron system.可调节电子加热诱导的高迁移率 GaAs/AlGaAs 2D 电子系统中的巨磁电阻。
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