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Updated: Mar 26, 2026
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Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
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Graphene homojunction: closed-edge bilayer graphene by pseudospin interaction
Jiaxu Yan1, Chao Li2, Da Zhan1
1Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore. zexiang@ntu.edu.sg.
Nanoscale
|January 27, 2016
Summary
Engineered pseudospin interactions in stacked graphene layers can create a band gap and separate charges. This graphene diode shows potential for future pseudospin electronics and solar energy harvesting.
Area of Science:
- Condensed matter physics
- Materials science
- Nanotechnology
Background:
- Pseudospin is a quantum mechanical property of electrons and holes in certain materials.
- Graphene exhibits unique electronic properties due to its honeycomb lattice structure.
- Controlling charge separation and band gaps is crucial for electronic device functionality.
Purpose of the Study:
- To investigate the realization of band gap opening and spatial charge separation in graphene.
- To explore the potential of engineered pseudospin interactions for creating functional graphene devices.
- To theoretically demonstrate the application of a graphene diode in pseudospin electronics and solar energy harvesting.
Main Methods:
- Theoretical modeling of electron and hole propagation in graphene sublattices.
- Engineering pseudospin interactions through controlled stacking of graphene layers.
- Simulating the electronic properties of the proposed graphene junction.
Main Results:
- Demonstrated that engineered pseudospin interactions lead to band gap opening in graphene.
- Showcased the ability to achieve spatial charge separation within the graphene junction.
- Theoretically validated the functionality of the graphene diode for pseudospin electronics.
Conclusions:
- Stacked graphene layers with engineered pseudospin interactions can form a functional diode.
- This graphene diode is a promising candidate for future pseudospin electronic applications.
- The proposed device holds potential for efficient solar energy harvesting.
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