Zobrazeno 1 - 10
of 98
pro vyhledávání: '"F P Martins"'
Autor:
Eini, Tomer, Quintela, M. F. C. Martins, Henriques, J. C. G., Ribeiro, R. M., Mazor, Yarden, Peres, N. M. R., Epstein, Itai
Collective excitations of charged particles in response to electromagnetic fields give rise to a rich variety of hybrid light-matter quasiparticles with unique properties. In metals, intraband collective response characterized by negative permittivit
Externí odkaz:
http://arxiv.org/abs/2412.03139
Biased bilayer graphene (BBG) is an important system for studies of excitonic effects in graphene--based systems, with its easily tunable bandgap. This bandgap is governed by an external gate voltage, allowing one to tune the optical response of the
Externí odkaz:
http://arxiv.org/abs/2405.04894
The optical properties of two-dimensional materials are exceptional in several respects. They are highly anisotropic and frequently dominated by excitonic effects. Dipole-allowed second order non-linear optical properties require broken inversion sym
Externí odkaz:
http://arxiv.org/abs/2304.08951
Publikováno v:
GIScience & Remote Sensing, Vol 61, Iss 1 (2024)
Anthropogenic activities have significantly altered land cover on a global scale. These changes often have a negative effect on biodiversity limiting the distribution of species. The extent of the effect on species’ distribution depends on the land
Externí odkaz:
https://doaj.org/article/2ad8911a61284ecfb5150a3b9927fbf0
Publikováno v:
Transactions of the Association for Computational Linguistics, Vol 12 (2024)
Externí odkaz:
https://doaj.org/article/0d5032b11f5f4bb2a69f2c81534c7e2e
Publikováno v:
J. Phys.: Condens. Matter 35 035302 (2023)
With the ever-growing interest in quantum computing, understanding the behaviour of excitons in monolayer quantum dots has become a topic of great relevance. In this paper, we consider a Wannier exciton confined in a triangular quantum dot of hexagon
Externí odkaz:
http://arxiv.org/abs/2209.03331
Publikováno v:
Appl. Sci. 2022, 12(15), 7872
Scattering of excitons by free carriers is a phenomena which is especially important when considering moderately to heavily doped semiconductors in low temperature experiments, where the interaction of excitons with acoustic and optical phonons is re
Externí odkaz:
http://arxiv.org/abs/2207.08787
Autor:
Nuno M. Guerreiro, Ricardo Rei, Daan van Stigt, Luisa Coheur, Pierre Colombo, André F. T. Martins
Publikováno v:
Transactions of the Association for Computational Linguistics, Vol 12 (2024)
Externí odkaz:
https://doaj.org/article/f72cc90387684a809f08ef172aa0100f
Publikováno v:
J. Phys.: Condens. Matter 34 455303 (2022)
When transition-metal dichalcogenide monolayers lack inversion symmetry, their low-energy single particle spectrum can described by tilted massive Dirac Hamiltonians. The so-called Janus materials fall into that category. Inversion symmetry can also
Externí odkaz:
http://arxiv.org/abs/2206.03416
Publikováno v:
Physica Status Solid B 2200097 (2022)
In this tutorial we introduce the reader to several theoretical methods of determining the exciton wave functions and the corresponding eigenenergies. The methods covered are either analytical, semi-analytical, or numeric. We make explicit all the de
Externí odkaz:
http://arxiv.org/abs/2202.12010