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Phusit Nualpijit. Optical conductivities of 2-dimensional materials. Doctoral Degraee(Physics). Kasetsart University. Office of the University Library. : Kasetsart University, 2022.
Optical conductivities of 2-dimensional materials
Name: Phusit Nualpijit
Classification :.LCCS: QC612.H3
LCSH:
Quantum Hall effect
LCSH:
Optoelectronic devices
LCSH:
Graphene
Abstract:
The electronic properties of buckled honeycomb lattice including the staggered exchange energy and perpendicular electric field may be investigated via tight-binding model. The strong spin-orbit interaction gives rise to Dirac fermion with tunable mass. The optical conductivities, longitudinal and transverse conductivities, can be evaluated by Kubo formula. When light passing through this material, the tunable mass induces an escalator behavior in transmittance which is frequency dependent. The direction of polarization of the light may be changed due to the Faraday angle which rotates the plane of polarization of the transmitted light. The rotation reflects an existence of transverse conductivity related to the energy gap. Furthermore, the Faraday angles are associated with non-zero total Chern number for quantum anomalous hall (QAH) and semimetal phase (SM). An enormous angle which comes from single layer can be increased by specific electric field and exchange energy. The model may be also applied to the other two-dimensional material, graphene bilayer encapsulated by WSe2. The spin-momentum locked state is existed only in case of spin-orbit interaction in QSH phase. The perfect OFF-state and ON-state may be tuned by electric field. These paves the way to perfectly control the pure spin-valley longitudinal conductivity, the optical switch, and available for spin-valley optoelectronics devices.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Bumned Soodchomshom
Role:
Thesis Advisor
Created:
2022
Modified:
2025-07-27
Issued:
2025-07-27
วิทยานิพนธ์/Thesis
application/pdf
URL: https://www.lib.ku.ac.th/KUthesis/2565/phusit-nua-all.pdf
CallNumber:
QC612.H3 .P48
eng
DegreeName: Doctor of Philosophy
Level: Doctoral Degraee
Descipline: Physics
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
ใช้เวลา
0.028051 วินาที
Phusit Nualpijit
| Title | Contributor | Type |
|---|---|---|
| A second quantization approach to the analytical faraday rotation in strained graphene
มหาวิทยาลัยเกษตรศาสตร์ Phusit Nualpijit | Sutee Boonchui | วิทยานิพนธ์/Thesis |
| Optical conductivities of 2-dimensional materials
มหาวิทยาลัยเกษตรศาสตร์ Phusit Nualpijit | Bumned Soodchomshom | วิทยานิพนธ์/Thesis |
Bumned Soodchomshom
| Title | Creator | Type and Date Create |
|---|---|---|
| Topological phase transition and quantum transport in honeycomb lattices
มหาวิทยาลัยเกษตรศาสตร์ Bumned Soodchomshom | Worasak Prarokijjak | วิทยานิพนธ์/Thesis |
| Quantum transport properties in bilayer silicene
มหาวิทยาลัยเกษตรศาสตร์ Bumned Soodchomshom | Kitakorn Jatiyanon | วิทยานิพนธ์/Thesis |
| Optical conductivities of 2-dimensional materials
มหาวิทยาลัยเกษตรศาสตร์ Bumned Soodchomshom | Phusit Nualpijit | วิทยานิพนธ์/Thesis |