Theory of Excitons in Atomically Thin Semiconductors: Tight-Binding Approach
Abstract
:1. General Overview
1.1. 2D van der Waals Materials
1.2. Optical Properties of TMDs and Their Heterostructures
1.3. Review of Theory of Correlated Optical Excitations
2. Electronic Structure of MX Semiconductors
2.1. Ab Initio Insight into Electronic Structure
2.2. Minimal Tight-Binding Hamiltonian
3. Tight-Binding Theory of Optical Excitations
3.1. Bethe–Salpeter Equation
3.2. Coulomb Matrix Elements
3.3. Screening of Coulomb Interactions
4. Mechanisms of the Renormalization of the X Spectrum
5. Summary
Funding
Data Availability Statement
Conflicts of Interest
Abbreviations
TMDs | Transition metal dichalcogenides |
X | Exciton |
hBN | Hexagonal boron nitride |
BSE | Bethe–Salpeter equation |
VB | Valence band |
CB | Conduction band |
DFT | Density functional theory |
SOC | Spin-orbit coupling |
TB | Tight-binding |
BZ | Brillouin zone |
EMA | Effective mass approximation |
mDF | Massive Dirac fermion |
R.-K. | Rytova–Keldysh |
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Bieniek, M.; Sadecka, K.; Szulakowska, L.; Hawrylak, P. Theory of Excitons in Atomically Thin Semiconductors: Tight-Binding Approach. Nanomaterials 2022, 12, 1582. https://doi.org/10.3390/nano12091582
Bieniek M, Sadecka K, Szulakowska L, Hawrylak P. Theory of Excitons in Atomically Thin Semiconductors: Tight-Binding Approach. Nanomaterials. 2022; 12(9):1582. https://doi.org/10.3390/nano12091582
Chicago/Turabian StyleBieniek, Maciej, Katarzyna Sadecka, Ludmiła Szulakowska, and Paweł Hawrylak. 2022. "Theory of Excitons in Atomically Thin Semiconductors: Tight-Binding Approach" Nanomaterials 12, no. 9: 1582. https://doi.org/10.3390/nano12091582