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Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
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Fano resonances in gated phosphorene junctions.
K J Lamas-Martínez1, J A Briones-Torres2, S Molina-Valdovinos1
1Unidad Académica de Ciencia y Tecnología de la Luz y la Materia, Universidad Autónoma de Zacatecas, Circuito Marie Curie S/N, Parque de Ciencia y Tecnología QUANTUM Ciudad del Conocimiento, 98160 Zacatecas, Zacatecas, Mexico.
Summary
Fano resonances are demonstrated in phosphorene junctions along the zigzag direction, arising from electron-hole state interference. This phenomenon, tunable by barrier properties, offers new possibilities in electronic devices.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Fano resonances arise from the interference between continuum and discrete states.
- In bilayer graphene, chiral matching enables Fano resonances in electrostatic junctions.
- Understanding Fano resonances in novel 2D materials is crucial for advanced electronics.
Purpose of the Study:
- To investigate the possibility of Fano resonances in gated phosphorene junctions.
- To explore the role of pseudospin texture in phosphorene for Fano resonance phenomena.
- To analyze the tunability and characteristics of Fano resonances in phosphorene.
Main Methods:
- Theoretical modeling of electron and hole states in phosphorene junctions.
- Analysis of transmission spectra and conductance properties.
- Comparison with Fano resonances in bilayer graphene.
Main Results:
- Fano resonances are observed in gated phosphorene junctions along the zigzag direction.
- Pseudospin texture in phosphorene facilitates interference between external electron and internal hole states.
- Fano line shape is sensitive to barrier parameters and transverse wave vector.
- Conductance exhibits characteristic signatures at Fano resonance positions.
Conclusions:
- Gated phosphorene junctions exhibit Fano resonances due to unique pseudospin properties.
- Ultra-thin barriers are needed, but band gap closing preserves pseudospin, allowing wider barrier applicability.
- Fano resonances in phosphorene are tunable and show distinct conductance features, similar to but different from bilayer graphene.
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