Zobrazeno 1 - 10
of 228
pro vyhledávání: '"Simserides, C"'
Autor:
Chalkopiadis, L., Simserides, C.
Publikováno v:
Journal of Physics Communications 5 (2021) 095006 (16 pages)
We study Rabi oscillations in a two-level system within the semiclassical approximation as an archetype test field of the Averaging Method (AM). The population transfer between the two levels is approached within the first and the second order AM. We
Externí odkaz:
http://arxiv.org/abs/2105.12127
Publikováno v:
Phys. Rev. E 98, 032412 (2018)
We study the energy structure and the transfer of an extra electron or hole along periodic polymers made of $N$ monomers, with a repetition unit made of $P$ monomers, using a Tight-Binding wire model, where a site is a monomer (e.g., in DNA, a base p
Externí odkaz:
http://arxiv.org/abs/1808.05614
Autor:
Lambropoulos, K., Simserides, C.
We report on the electronic structure, density of states and transmission properties of the periodic one-dimensional Tight-Binding (TB) lattice with a single orbital per site and nearest-neighbor interactions, with a generic unit cell of $u$ sites. T
Externí odkaz:
http://arxiv.org/abs/1706.03250
Publikováno v:
Cogent Physics (2017) 4 (1), 1361077
We employ Real-Time Time-Dependent Density Functional Theory to study hole oscillations within a B-DNA monomer (one base pair) or dimer (two base pairs). Placing the hole initially at any of the bases which make up a base pair, results in THz oscilla
Externí odkaz:
http://arxiv.org/abs/1704.07413
Autor:
Lambropoulos, K., Kaklamanis, K., Morphis, A., Tassi, M., Lopp, R., Georgiadis, G., Theodorakou, M., Chatzieleftheriou, M., Simserides, C.
Publikováno v:
Journal of Physics: Condensed Matter 28 (2016) 495101
We call \textit{monomer} a B-DNA base pair and study, analytically and numerically, electron or hole oscillations in \textit{monomers}, \textit{dimers} and \textit{trimers}. We employ two Tight Binding (TB) approaches: (I) at the base-pair level, usi
Externí odkaz:
http://arxiv.org/abs/1609.00180
Autor:
Lambropoulos, K., Chatzieleftheriou, M., Morphis, A., Kaklamanis, K., Lopp, R., Theodorakou, M., Tassi, M., Simserides, C.
Publikováno v:
Phys. Rev. E 94, 062403 (2016)
We employ two Tight-Binding (TB) approaches to study the electronic structure and hole or electron transfer in B-DNA monomer polymers and dimer polymers made up of $N$ monomers (base pairs): (I) at the base-pair level, using the on-site energies of b
Externí odkaz:
http://arxiv.org/abs/1609.00235
Publikováno v:
European Physical Journal Web of Conferences 75, 01003 (2014)
Magnetic properties of Ga$_{1-x}$Mn$_x$N are studied theoretically by employing a tight binding approach to determine exchange integrals $J_{ij}$ characterizing the coupling between Mn spin pairs located at distances $R_{ij}$ up to the 16th cation co
Externí odkaz:
http://arxiv.org/abs/1308.4517
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures 42 (2010) 2694-2697
In order to explain the absence of hysteresis in ferromagnetic p-type (Cd,Mn)Te quantum wells (QWs), spin dynamics was previously investigated by Monte Carlo simulations combining the Metropolis algorithm with the determination of hole eigenfunctions
Externí odkaz:
http://arxiv.org/abs/1308.4525
Autor:
Stefanowicz, S., Kunert, G., Simserides, C., Majewski, J. A., Stefanowicz, W., Kruse, C., Figge, S., Li, Tian, Jakiela, R., Trohidou, K. N., Bonanni, A., Hommel, D., Sawicki, M., Dietl, T.
Publikováno v:
Phys. Rev. B 88, 081201(R) (2013)
Molecular beam epitaxy has been employed to obtain Ga1-xMnxN films with x up to 10% and Curie temperatures T_C up to 13 K. The magnitudes of T_C and their dependence on x, T_C(x) ~ x^m, where m = 2.2 +/- 0.2 are quantitatively described by a tight bi
Externí odkaz:
http://arxiv.org/abs/1306.5141
Autor:
Sawicki, M., Devillers, T., Gałȩski, S., Simserides, C., Dobkowska, S., Faina, B., Grois, A., Navarro-Quezada, A., Trohidou, K. N., Majewski, J. A., Dietl, T., Bonanni, A.
Publikováno v:
Phys. Rev. B 85, 205204 (2012)
By employing highly sensitive millikelvin SQUID magnetometry, the magnitude of the Curie temperature as a function of the Mn concentration x is determined for thoroughly characterized Ga1-xMnxN. The interpretation of the results in the frame of tight
Externí odkaz:
http://arxiv.org/abs/1202.6233