We report the first observation of linear magnetoresistance (LMR) in multilayer epitaxial graphene grown on SiC. We show that multilayer epitaxial graphene exhibits large LMR from 2.2 K up to room temperature and that it can be best explained by a purely quantum mechanical model. We attribute the observation of LMR to inhomogeneities in the epitaxially grown graphene film. The large magnitude of the LMR suggests potential for novel applications in areas such as high-density data storage and magnetic sensors and actuators.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/nl101797d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Direct synthesis of multilayer graphene on a microscale ridge-patterned copper substrate.
Micron
December 2024
School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea; Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul National University, Seoul 08826, Republic of Korea; Advanced Institute of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea; Institute of Engineering Research, College of Engineering, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:
Graphene's exceptional physical properties, such as high thermal conductivity and mechanical strength, have attracted significant interest for its integration in transistors and thermal interface materials. While achieving various conformations of graphene is desirable for such applications, synthesizing graphene with target conformations remains a challenge. In this work, we present a method for synthesizing multilayer graphene with ridged conformations, using a microscale ridge-patterned copper (Cu) layer that was epitaxially deposited on a sapphire substrate.
View Article and Find Full Text PDFEpitaxy Orientation and Kinetics Diagnosis for Zinc Electrodeposition.
ACS Nano
December 2024
College of Energy, Soochow Institute for Energy and Materials InnovationS (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, P. R. China.
An accurate assessment of the electrodeposition mechanism is essential for evaluating the electrochemical stability and reversibility of the metal anodes. Multiple strategies aimed at uniform Zn deposition have been extensively reported, yet it is challenging to clarify the Zn crystal growth regularity and activity due to the obscured physicochemical properties of as-deposited Zn. Herein, we present a protocol for elucidating the controlled epitaxial growth process of Zn crystals and quantifying their surface electrochemical activity using scanning electrochemical microscopy.
View Article and Find Full Text PDFControllable Synthesis of High-Quality Magnetic Topological Insulator MnBiTe and MnBiTe Multilayers by Chemical Vapor Deposition.
Nano Lett
December 2024
Beijing National Center for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, PR China.
With a nontrivial topological band and intrinsic magnetic order, two-dimensional (2D) MnBiTe-family materials exhibit great promise for exploring exotic quantum phenomena and potential applications. However, the synthesis of 2D MnBiTe-family materials via chemical vapor deposition (CVD), which is essential for advancing device applications, still remains a significant challenge since it is difficult to control the reactions among multi-precursors and form pure phases. Here, we report a controllable synthesis of high-quality magnetic topological insulator MnBiTe and MnBiTe multilayers via an evaporation-rate-controlled CVD approach.
View Article and Find Full Text PDFOverturning CO Hydrogenation Selectivity from CH to CO by Strong Ru-FeO Interaction Arising from a Multilayer Epitaxial Structure.
ACS Appl Mater Interfaces
December 2024
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China.
The catalytic conversion of CO to CO through hydrogenation has emerged as a promising strategy for CO utilization, given that CO serves as a valuable C1 platform compound for synthesizing liquid fuels and chemicals. However, the predominant formation of CH via deep hydrogenation over Ru-based catalysts poses challenges in achieving selective CO production. High reaction temperatures often lead to catalyst deactivation and changes in selectivity due to dynamic metal evolution or agglomeration, even with a classic strong metal-support interaction.
View Article and Find Full Text PDFCurrent-Induced Field-Free Switching of Co/Pt Multilayer via Modulation of Interlayer Exchange Coupling and Magnetic Anisotropy.
Materials (Basel)
October 2024
School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
Article Synopsis
- - The paper focuses on current-induced magnetic switching using spin-orbit torque, highlighting its significance in both academic and industry settings.
- - Most previous research has complicated the magnetic structures with symmetry breakers, while this study presents a simpler design using a multilayer structure with easy-to-manage parameters.
- - The findings suggest that balancing magnetic anisotropy and interlayer coupling is key to achieving effective magnetic switching, paving the way for advancements in spin-based electronics.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!