201 citations · 1.6k across the 27 of their papers we have counts for
27 papers
Energy renormalizations of resident carriers and excitons in transition metal dichalcogenide monolayers
Dinh Van Tuan, Junghwan Kim, Hanan Dery
Energy renormalizations of resident carriers and excitons are studied theoretically, and compared with recent experiments of electrostatically-doped WSe monolayers. The calcula…
Energy shifts and broadening of excitonic resonances in electrostatically-doped semiconductors
Hanan Dery, Cedric Robert, Scott A. Crooker +2
Tuning the density of resident electrons or holes in semiconductors provides crucial insight into the composition of excitonic complexes that are observed as absorption or photolum…
Component exchange theory of trions
Dinh Van Tuan, Hanan Dery
Treating the trion problem as an effective two-body system with exciton and electron components, we identify component exchange as the reason leading to trion formation. This mecha…
Effects of dynamical dielectric screening on the excitonic spectrum of monolayer semiconductors
Dinh Van Tuan, Hanan Dery
We present a new method to solve the dynamical Bethe-Salpeter Equation numerically. The method allows one to investigate the effects of dynamical dielectric screening on the spectr…
Excitons and trions in monolayer semiconductors with correlated electrons
Dinh Van Tuan, Hanan Dery
We revisit low-temperature optical spectra of transition-metal dichalcogenide monolayers and point to a possible crystallization of electrons (or holes) at low to moderate charge d…
Excitons in periodic potentials
Dinh Van Tuan, Hanan Dery
The energy band structure of excitons is studied in periodic potentials produced by the short-range interaction between the exciton and electrons of Wigner or Moiré lattices. Treat…
Intervalley electron-hole exchange interaction and impurity-assisted recombination of indirect excitons in WS and WSe monolayers
Pengke Li, Cedric Robert, Dinh Van Tuan +3
The variety of excitonic states in tungsten-based dichalcogenide monolayers stems from unique interplay between the spin and valley degrees of freedom. One of the exciton species i…
Hexcitons and oxcitons in monolayer WSe
Dinh Van Tuan, Su-Fei Shi, Xiaodong Xu +2
In the archetypal monolayer semiconductor WSe, the distinct ordering of spin-polarized valleys (low-energy pockets) in the conduction band allows for studies of not only simple…
Composite excitonic states in doped semiconductors
Dinh Van Tuan, Hanan Dery
We present a theoretical model of composite excitonic states in doped semiconductors. Many-body interactions between a photoexcited electron-hole pair and the electron gas are inte…
Relaxation and darkening of excitonic complexes in electrostatically-doped monolayer semiconductors: Roles of exciton-electron and trion-electron interactions
Min Yang, Lei Ren, Cedric Robert +5
We present photoluminescence measurements in monolayer WSe, which point to the importance of the interaction between charged particles and excitonic complexes. The theoretical…
Measurement of Conduction and Valence Bands g-factors in a Transition Metal Dichalcogenide Monolayer
Cedric Robert, Hanan Dery, Lei Ren +9
The electron valley and spin degree of freedom in monolayer transition-metal dichalcogenides can be manipulated in optical and transport measurements performed in magnetic fields.…
Valley Phonons and Exciton Complexes in a Monolayer Semiconductor
Minhao He, Pasqual Rivera, Dinh Van Tuan +10
The coupling between spin, charge, and lattice degrees of freedom plays an important role in a wide range of fundamental phenomena. Monolayer semiconducting transitional metal dich…
Virtual trions in the photoluminescence of monolayer transition-metal dichalcogenides
Dinh Van Tuan, Aaron M. Jones, Min Yang +2
Photoluminescence experiments from monolayer transition-metal dichalcogenides often show that the binding energy of trions is conspicuously similar to the energy of optical phonons…
Pseudospin-driven spin relaxation mechanism in graphene
Dinh Van Tuan, Frank Ortmann, David Soriano +2
The possibility of transporting spin information over long distances in graphene, owing to its small intrinsic spin-orbit coupling (SOC) and the absence of hyperfine interaction, h…
Dynamical screening in monolayer transition-metal dichalcogenides and its manifestations in the exciton spectrum
Benedikt Scharf, Dinh Van Tuan, Igor Žutić +1
Monolayer transition-metal dichalcogenides (ML-TMDs) offer exciting opportunities to test the manifestations of many-body interactions through changes in the charge density. Tuning…
The Coulomb interaction in monolayer transition-metal dichalcogenides
Dinh Van Tuan, Min Yang, Hanan Dery
Recently, the celebrated Keldysh potential has been widely used to describe the Coulomb interaction of few-body complexes in monolayer transition-metal dichalcogenides. Using this…
Marrying excitons and plasmons in monolayer transition-metal dichalcogenides
Dinh Van Tuan, Benedikt Scharf, Igor Žutić +1
Just as photons are the quanta of light, plasmons are the quanta of orchestrated charge-density oscillations in conducting media. Plasmon phenomena in normal metals, superconductor…
Probing Many-Body Interactions in Monolayer Transition-Metal Dichalcogenides
Dinh Van Tuan, Benedikt Scharf, Zefang Wang +4
Many-body interactions in monolayer transition-metal dichalcogenides are strongly affected by their unique band structure. We study these interactions by measuring the energy shift…
Spin Manipulation in Graphene by Chemically-Induced Sublattice Pseudospin Polarization
Dinh Van Tuan, Stephan Roche
Spin manipulation is one of the most critical challenges to realize spin-based logic devices and spintronic circuits. Graphene has been heralded as an ideal material to achieve spi…
Spin Dynamics in Bilayer Graphene : Role of Electron-Hole Puddles and the Dyakonov-Perel Mechanism
Dinh Van Tuan, Shaffique Adam, Stephan Roche
We report on spin transport features which are unique to high quality bilayer graphene, in absence of magnetic contaminants and strong intervalley mixing. The time-dependent spin p…
Spin Dynamics and Relaxation in Graphene Dictated by Electron-hole Puddles
Dinh Van Tuan, Frank Ortmann, Aron W. Cummings +2
The understanding of spin dynamics and relaxation mechanisms in clean graphene and the upper time and length scales on which spin devices can operate are prerequisites to realizing…
Anomalous Ballistic Transport in Disordered Bilayer Graphene: Dimer Vacancies induced Dirac Semimetal
Dinh Van Tuan, Stephan Roche
We report anomalous quantum transport features in bilayer graphene in presence of a random distribution of structural vacancies. By using an efficient real-space Kubo-Greenwood tra…
Charge Transport in Polycrystalline Graphene: Challenges and Opportunities
Aron W. Cummings, Dinh Loc Duong, Van Luan Nguyen +5
Graphene has attracted significant interest both for exploring fundamental science and for a wide range of technological applications. Chemical vapor deposition (CVD) is currently…
Spin Transport in Hydrogenated Graphene
David Soriano, Dinh Van Tuan, Simon M. -M. Dubois +7
In this review we discuss the multifaceted problem of spin transport in hydrogenated graphene from a theoretical perspective. The current experimental findings suggest that hydroge…