Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Alvertis, Antonios M."'
The accurate first-principles description of strongly-correlated materials is an important and challenging problem in condensed matter physics. Ab initio downfolding has emerged as a way of deriving accurate many-body Hamiltonians including strong co
Externí odkaz:
http://arxiv.org/abs/2409.12237
Autor:
Lee, Woncheol, Alvertis, Antonios M., Li, Zhenglu, Louie, Steven G., Filip, Marina R., Neaton, Jeffrey B., Kioupakis, Emmanouil
Atomically thin semiconductors, encompassing both 2D materials and quantum wells, exhibit a pronounced enhancement of excitonic effects due to geometric confinement. Consequently, these materials have become foundational platforms for the exploration
Externí odkaz:
http://arxiv.org/abs/2408.00924
Simulating the Hubbard model is of great interest to a wide range of applications within condensed matter physics, however its solution on classical computers remains challenging in dimensions larger than one. The relative simplicity of this model, e
Externí odkaz:
http://arxiv.org/abs/2408.00836
Autor:
Coveney, Christopher J. N., Haber, Jonah B., Alvertis, Antonios M., Neaton, Jeffrey B., Filip, Marina R.
Understanding the processes governing the dissociation of excitons to free charge carriers in semiconductors and insulators is of central importance for photovoltaic applications. Dyson's $\mathcal{S}$-matrix formalism provides a framework for comput
Externí odkaz:
http://arxiv.org/abs/2405.13525
Electron-phonon interactions are of great importance to a variety of physical phenomena, and their accurate description is an important goal for first-principles calculations. Isolated examples of materials and molecular systems have emerged where el
Externí odkaz:
http://arxiv.org/abs/2403.08240
Autor:
Alvertis, Antonios M., Haber, Jonah B., Li, Zhenglu, Coveney, Christopher J. N., Louie, Steven G., Filip, Marina R., Neaton, Jeffrey B.
The properties of excitons, or correlated electron-hole pairs, are of paramount importance to optoelectronic applications of materials. A central component of exciton physics is the electron-hole interaction, which is commonly treated as screened sol
Externí odkaz:
http://arxiv.org/abs/2312.03841
Autor:
Alvertis, Antonios M., Haber, Jonah B., Engel, Edgar A., Sharifzadeh, Sahar, Neaton, Jeffrey B.
Publikováno v:
Phys. Rev. Lett. 130, 086401 (2023)
The spatial extent of excitons in molecular systems underpins their photophysics and utility for optoelectronic applications. Phonons are reported to lead to both exciton localization and delocalization. However, a microscopic understanding of phonon
Externí odkaz:
http://arxiv.org/abs/2301.11944
Autor:
Gillett, Alexander J., Pershin, Anton, Pandya, Raj, Feldmann, Sascha, Sneyd, Alexander J., Alvertis, Antonios M., Evans, Emrys W., Thomas, Tudor H., Cui, Lin-Song, Drummond, Bluebell H., Scholes, Gregory D., Olivier, Yoann, Rao, Akshay, Friend, Richard H., Beljonne, David
Thermally-activated delayed fluorescence (TADF) enables organic semiconductors with charge transfer (CT)-type excitons to convert dark triplet states into bright singlets via a reverse intersystem crossing (rISC) process. Here, we consider the role o
Externí odkaz:
http://arxiv.org/abs/2109.05945
Publikováno v:
The Journal of Chemical Physics 154, 244109 (2021)
The energies of molecular excited states arise as solutions to the electronic Schr\"{o}dinger equation and are often compared to experiment. At the same time, nuclear quantum motion is known to be important and to induce a red-shift of excited state
Externí odkaz:
http://arxiv.org/abs/2011.10585