Non-Ohmic negative longitudinal magnetoresistance in a two-dimensional electron gas
Abstract
Negative longitudinal magnetoresistance (NLMR) has been reported in a variety of materials and has attracted extensive attention as an electrotransport hallmark of topological Weyl semimetals. However, its origin is still under debate. Here, we demonstrate that the NLMR in a two-dimensional electron gas can be influenced by the measurement current. While the NLMR persists up to 130 K, its magnitude and magnetic field response become dependent on the applied current below 60 K. The tunable NLMR at low and high currents can be best attributed to quantum interference and disorder scattering effects, respectively. This work uncovers non-Ohmic NLMR in a non-Weyl material and highlights potential effects of the measurement current in elucidating electrotransport phenomena. Here, we also demonstrate that NLMRs can be a valuable phenomenon in revealing the origins of other properties, such as negative MRs in perpendicular magnetic fields.
- Authors:
-
[3];
[5];
[6]
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Nanjing Univ. (China)
- Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northern Illinois Univ., DeKalb, IL (United States). Dept. of Physics
- Northern Illinois Univ., DeKalb, IL (United States). Dept. of Physics
- Nanjing Univ. (China)
- Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1762792
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 103; Journal Issue: 3; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Charge; Electrical conductivity; Magnetotransport; Quantum interference effects; Quantum transport; InterfacesTwo-dimensional electron system; Hall bar; Resistivity measurements
Citation Formats
Lyu, Yang-Yang, Zhou, Xian-Jing, Xiao, Zhi-Li, Fotovat, Roxanna, Xu, Jing, Basnet, Gobind, Wang, Yong-Lei, Jin, Dafei, Divan, Ralu, Wang, Hua-Bing, and Kwok, Wai-Kwong. Non-Ohmic negative longitudinal magnetoresistance in a two-dimensional electron gas. United States: N. p., 2021.
Web. doi:10.1103/physrevb.103.035422.
Lyu, Yang-Yang, Zhou, Xian-Jing, Xiao, Zhi-Li, Fotovat, Roxanna, Xu, Jing, Basnet, Gobind, Wang, Yong-Lei, Jin, Dafei, Divan, Ralu, Wang, Hua-Bing, & Kwok, Wai-Kwong. Non-Ohmic negative longitudinal magnetoresistance in a two-dimensional electron gas. United States. https://doi.org/10.1103/physrevb.103.035422
Lyu, Yang-Yang, Zhou, Xian-Jing, Xiao, Zhi-Li, Fotovat, Roxanna, Xu, Jing, Basnet, Gobind, Wang, Yong-Lei, Jin, Dafei, Divan, Ralu, Wang, Hua-Bing, and Kwok, Wai-Kwong. Thu .
"Non-Ohmic negative longitudinal magnetoresistance in a two-dimensional electron gas". United States. https://doi.org/10.1103/physrevb.103.035422. https://www.osti.gov/servlets/purl/1762792.
@article{osti_1762792,
title = {Non-Ohmic negative longitudinal magnetoresistance in a two-dimensional electron gas},
author = {Lyu, Yang-Yang and Zhou, Xian-Jing and Xiao, Zhi-Li and Fotovat, Roxanna and Xu, Jing and Basnet, Gobind and Wang, Yong-Lei and Jin, Dafei and Divan, Ralu and Wang, Hua-Bing and Kwok, Wai-Kwong},
abstractNote = {Negative longitudinal magnetoresistance (NLMR) has been reported in a variety of materials and has attracted extensive attention as an electrotransport hallmark of topological Weyl semimetals. However, its origin is still under debate. Here, we demonstrate that the NLMR in a two-dimensional electron gas can be influenced by the measurement current. While the NLMR persists up to 130 K, its magnitude and magnetic field response become dependent on the applied current below 60 K. The tunable NLMR at low and high currents can be best attributed to quantum interference and disorder scattering effects, respectively. This work uncovers non-Ohmic NLMR in a non-Weyl material and highlights potential effects of the measurement current in elucidating electrotransport phenomena. Here, we also demonstrate that NLMRs can be a valuable phenomenon in revealing the origins of other properties, such as negative MRs in perpendicular magnetic fields.},
doi = {10.1103/physrevb.103.035422},
journal = {Physical Review B},
number = 3,
volume = 103,
place = {United States},
year = {Thu Jan 21 00:00:00 EST 2021},
month = {Thu Jan 21 00:00:00 EST 2021}
}
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