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Updated: May 25, 2025
06:24
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
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Z2topological phase transition in twisted plumbene
Ayda Gholamhosseinian1, Mohsen Modarresi2, Mahmood Rezaee Roknabadi3
1Department of Physics, Ferdowsi University of Mashhad, Azadi Sq., Mashhad, Razavi Khorasan, 9177948974, Iran (the Islamic Republic of).
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|February 26, 2025
Summary
Twisted bilayer plumbene exhibits tunable electronic and topological properties. Specific rotation angles can induce a phase transition from insulator to conductor or topological insulator (TI), enabling spintronic device applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanoscience
Background:
- Moiré patterns in twisted 2D materials, like graphene, reveal unique electronic properties.
- Twistronics leverages controlled twisting angles to engineer material characteristics.
Purpose of the Study:
- Investigate the impact of rotation angles on electronic and topological properties of twisted bilayer plumbene.
- Analyze the potential for phase transitions and topological insulator behavior in this system.
Main Methods:
- Utilized density functional theory (DFT) to compute band structures.
- Examined plumbene bilayers at various twisting angles.
Main Results:
- Identified tunable electronic properties, including transitions from trivial insulator to conductor.
- Observed characteristics of a topological insulator (TI) at specific rotation angles.
- Confirmed the existence of both TI and conductor phases within the studied structures.
Conclusions:
- Twisted bilayer plumbene offers a platform for engineering electronic and topological states.
- The tunable nature of these properties suggests potential applications in advanced spintronic devices.
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