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Magnetism in curved VSe2 monolayers
1State Key Laboratory of Mechanics and Control of Mechanical Structures, MOE Key Laboratory for Intelligent Nano Materials and Devices, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics Nanjing 210016 China yfguo@nuaa.edu.cn.
RSC Advances
|March 17, 2023
Summary
Curving magnetic VSe2 monolayers causes periodic magnetic moment fluctuations and charge density waves. This discovery offers new avenues for designing mechanical magnetic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Vanadium diselenide (VSe2) monolayers are magnetic 2D materials with potential applications.
- Understanding the impact of mechanical deformation on their properties is crucial for device development.
Purpose of the Study:
- To investigate the effects of curvature on the electronic and magnetic properties of VSe2 monolayers.
- To establish a model correlating curvature with magnetic behavior.
Main Methods:
- Extensive first-principles calculations were employed.
- Analysis of magnetic moments, charge density, and bending energies.
Main Results:
- Curvature induces periodic fluctuations in V atom magnetic moments and charge density waves in VSe2 monolayers.
- Bending energies vary non-monotonically with curvature for 1T-VSe2, unlike 2H-VSe2.
- Curvature modifies V-Se bond structure, leading to periodic magnetic ordering.
Conclusions:
- Mechanical bending significantly alters the magnetic properties of VSe2 monolayers.
- A phenomenological model describes the relationship between curvature and magnetic moment.
- Findings suggest potential for developing novel magnetic devices through mechanical design.
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