Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Despoja, Vito"'
Publikováno v:
Nanophotonics, Vol 13, Iss 15, Pp 2765-2780 (2024)
Converting transverse photons into longitudinal two-dimensional plasmon-–polaritons (2D-PP) and vice versa presents a significant challenge within the fields of photonics and plasmonics. Therefore, understanding the mechanism which increases the ph
Externí odkaz:
https://doaj.org/article/ce1e3b37dad54fe4a59f52725398a713
Publikováno v:
Phys. Rev. B 104, 115421 (2021)
Starting from the rigorous quantum-field-theory formalism we derive a formula for the screened conductivity designed to study the coupling of light with elementary electron excitations and the ensuing electromagnatic modes in two-dimensional (2D) sem
Externí odkaz:
http://arxiv.org/abs/2106.05583
Autor:
Novko, Dino, Despoja, Vito
Publikováno v:
Phys. Rev. Research 3, 032056 (2021)
Two-dimensional (2D) semiconducting microcavity, where exciton-polaritons can be formed, constitues a promising setup for exploring and manipulating various regimes of light-matter interaction. Here, the coupling between 2D excitons and metallic cavi
Externí odkaz:
http://arxiv.org/abs/2105.05591
Publikováno v:
Phys. Rev. B 103, 205401 (2021)
We analyse recently measured nonlinear photoemission spectra from Ag surfaces that reveal resonances whose energies do not scale with the applied photon energy but stay pinned to multiples of bulk plasmon energy $\hbar\omega_p$ above the Fermi level.
Externí odkaz:
http://arxiv.org/abs/2105.01396
Autor:
Mowbray, Duncan John, Despoja, Vito
Publikováno v:
Journal of Physical Chemistry C, 2019, doi:10.1021/acs.jpcc.9b05770
The design of novel functional materials in silico is severely hampered by the lack of robust and computationally efficient methods for describing both molecular absorbance and screening on substrates. Here we employ our hybrid $G_0[W_0+\Delta W]$-BS
Externí odkaz:
http://arxiv.org/abs/1910.05434
Understanding, optimizing, and controlling the optical absorption process, exciton gemination, and electron-hole separation and conduction in low dimensional systems is a fundamental problem in materials science. However, robust and efficient methods
Externí odkaz:
http://arxiv.org/abs/1909.13409
Publikováno v:
Phys. Rev. B 100, 195401 (2019)
Recent theoretical considerations have demonstrated that freestanding graphene doped with alkali metals (AC x ) supports strong Dirac and weak acoustic plasmons. Here we show that when AC x is deposited on a metallic surface, the intense Coulomb scre
Externí odkaz:
http://arxiv.org/abs/1907.02806
Publikováno v:
Phys. Rev. B 98, 125405 (2018)
We present a theoretical description of energy transfer processes between two noncontact quasi- twodimensional crystals separated by distance a, oscillating with frequency omega0 and amplitude rho0 , and compare it with the case of two quasi-twodimen
Externí odkaz:
http://arxiv.org/abs/1803.03152
Autor:
Rukelj, Zoran, Despoja, Vito
A theoretical study of the exciton binding energy in the two-dimensional hexagonal boron nitride monolayer is presented within the tight-binding approximation (TBA). A self-consistent equation for the interband electron-hole propagators is derived an
Externí odkaz:
http://arxiv.org/abs/1803.03100
Autor:
Despoja, Vito, Marušić, Leonardo
The interband pi and pi+sigma plasmons in pristine graphene and the Dirac plasmon in doped graphene are not applicable, since they are broad or weak, and weakly couple to an external longitudinal or electromagnetic probe. Therefore, the ab initio Den
Externí odkaz:
http://arxiv.org/abs/1803.03112