Listar por autoría "eea04393-040d-453e-868f-28688d516110"
Mostrando ítems 1-20 de 26
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A parallel solver for huge dense linear systems
Badía, José; Movilla, Jose L.; Climente, Juan I.; Castillo Catalán, María Isabel; Marqués-Andrés, Mercedes; Mayo, Rafael; Quintana-Orti, Enrique S.; Planelles, Josep Elsevier (2011-11)HDSS (Huge Dense Linear System Solver) is a Fortran Application Programming Interface (API) to facilitate the parallel solution of very large dense systems to scientists and engineers. The API makes use of parallelism to ... -
Auger Recombination Suppression in Nanocrystals with Asymmetric Electron–Hole Confinement
Climente, Juan I.; Movilla, Jose L.; Planelles, Josep WILEY-VCH Verlag (2012)Type II and quasi-type II nanocrystals with thick shells exhibit reduced blinking. However, after a number of monolayers, the influence of the shell thickness is found to vanish. Using a two-band Kane Hamiltonian, it is ... -
Beyond universal volume scaling: tailoring two-photon absorption in nanomaterials by heterostructure design
Alo, Arthur; Barros, Leonardo; Nagamine, Gabriel; Cotrino Lemus, Jonathan; Planelles, Josep; Movilla, Jose L.; Climente, Juan I.; Lee, Hak June; Bae, Wan Ki; Padilha, Lazaro ACS Publications (American Chemical Society) (2023-07-28)Colloidal semiconductor nanomaterials present broadband, with large cross-section, two-photon absorption (2PA) spectra, which turn them into an important platform for applications that benefit from a high nonlinear optical ... -
Configuration interaction approach to Fermi liquid-Wigner crystal mixed phases in semiconductor nanodumbbells
Planelles, Josep; Movilla, Jose L.; Ballester Caudet, Ana; Escartín, J. M.; Pi, Martí American Institute of Physics (AIP) (2012)Full configuration interaction calculations demonstrate the existence of mixed correlation phases in truly three-dimensional elongated nanocrystals subject to inhomogeneous spatial confining potentials. In such phases, the ... -
Correlation in narrow nanorods: a variational potential–configuration interaction scheme
Planelles, Josep; Climente, Juan I.; Royo Valls, Miguel; Movilla, Jose L. Institute of Physics (2009)Abstract. Full configuration interaction calculations of two electrons in narrow semiconductor nanorods are carried out employing different orbital basis sets. It is shown that the usual configurations built from ... -
Coupled donors in quantum dots: quantum size and dielectric mismatch effects
Movilla, Jose L.; Ballester Caudet, Ana; Planelles, Josep American Physical Society (2009)Spatial and dielectric confinement modulations of the spontaneous emission rates, transition energies, and charge-density distributions of a singly ionized double donor system (D2+) in a spherical quantum dot are calculated ... -
Delocalized image surface states in defects free SiO2 hollow nanospheres
Movilla, Jose L.; Rajadell Viciano, Fernando; Planelles, Josep American Institute of Physics (2008)Delocalized image surface states in free-standing hollow silica nanospheres populated with one or two electrons or an exciton are theoretically predicted for a wide range of internal radii and shell thicknesses. The ... -
Dielectric Confinement Enables Molecular Coupling in Stacked Colloidal Nanoplatelets
Movilla, Jose L.; Planelles, Josep; Climente, Juan I. American Chemical Society (2020-04-09)We show theoretically that carriers confined in semiconductor colloidal nanoplatelets (NPLs) sense the presence of neighbor, cofacially stacked NPLs in their energy spectrum. When approaching identical NPLs, the otherwise ... -
Dielectric confinement in quantum dots of arbitrary shape within the local spin density approximation: Diluted regimes in elongated quantum dots
Movilla, Jose L.; Pi, Martí; Planelles, Josep American Institute of Physics (2010)We propose a simplified and computationally feasible model accounting for the dielectric confinement in arbitrarily shaped many-electron quantum dots, within the local spin density approximation. The model yields quite ... -
Dielectric confinement of excitons in type-I and type-II semiconductor nanorods
Royo Valls, Miguel; Climente, Juan I.; Movilla, Jose L.; Planelles, Josep Institute of Physics (2011-01-12)We theoretically study the effect of the dielectric environment on the exciton ground state of CdSe and CdTe/CdSe/CdTe nanorods. We show that insulating environments enhance the exciton recombination rate and blueshift the ... -
Dielectric polarization in axially-symmetric nanostructures: A computational approach
Movilla, Jose L.; Climente, Juan I.; Planelles, Josep Elsevier (2010)A computational scheme to evaluate exactly the effects of the dielectric mismatch in semiconductor nanostructures with axial symmetry is presented. It is based on the numerical computation of the image charges induced by ... -
Effect of interface alloying and band-alignment on the Auger recombination of heteronanocrystals
Planelles, Josep; Movilla, Jose L.; Climente, Juan I. American Institute of Physics (AIP) (2012)We report a numerical study of the effect of interface alloying and band alignment on the Auger recombination processes of core/shell nanocrystals. Smooth interfaces are found to suppress Auger recombination, the strength ... -
Excitonic Resonance in Semiconductor–Metal Nanohybrids
Climente, Juan I.; Movilla, Jose L.; Goldoni, Guido; Planelles, Josep ACS (2011-07)We use a configuration interaction approach within the envelope function approximation to study the nature of the excitonic resonance in nanohybrids, composite nanoparticles (NPs) combining a semiconducting and a metallic ... -
Excitons in metal halide perovskite nanoplatelets: an effective mass description of polaronic, dielectric and quantum confinement effects
Movilla, Jose L.; Planelles, Josep; Climente, Juan I. Royal Society of Chemistry (2023)A theoretical model for excitons confined in metal halide perovskite nanoplatelets is presented. The model accounts for quantum confinement, dielectric confinement, short and long range polaron interactions by means of ... -
Generalized method of image dyons for quasi-two dimensional slabs with ordinary - topological insulator interfaces
Movilla, Jose L.; Climente, Juan I.; Planelles, Josep Elsevier (2023-06-16)Electrostatic charges near the interface between topological (TI) and ordinary (OI) insulators induce magnetic fields in the medium that can be described through the so-called method of image dyons (electric charge - ... -
Large-scale linear system solver using secondary storage: self-energy in hybrid nanostructures
Badía, José; Movilla, Jose L.; Climente, Juan I.; Castillo Catalán, María Isabel; Marqués-Andrés, Mercedes; Mayo, Rafael; Quintana-Orti, Enrique S.; Planelles, Josep Elsevier (2011-02)We present a Fortran library which can be used to solve large-scale dense linear systems, Ax=b. The library is based on the LU decomposition included in the parallel linear algebra library PLAPACK and on its out-of-core ... -
Magnetic modulation of the tunneling between defects states in antidot superlattices
Movilla, Jose L.; Planelles, Josep IOP Publishing (2012)We show theoretically that the tunnelling between properly designed defects in periodic antidot lattices can be strongly modulated by applied magnetic fields. Further, transport channels made up of linear arrangements of ... -
Mixed correlation phases in elongated quantum dots
Ballester Caudet, Ana; Escartín, J. M.; Movilla, Jose L.; Pi, Martí; Planelles, Josep American Physical Society (2010-09-07)It is theoretically shown, within the local spin-density-functional theory framework, that inhomogeneous confining potentials in elongated, diluted N-electron quantum dots may lead to the formation of mixed phases in which ... -
Nuevas tecnologías de la información y la computación aplicadas a la Química
Planelles, Josep; Serrano, Roque; Movilla, Jose L. Universitat Jaume I (2010) -
One- and Two-Photon Absorption in CdS Nanodots and Wires: The Role of Dimensionality in the One- and Two-Photon Luminescence Excitation Spectrum
Achtstein, Alexander W.; Ballester Caudet, Ana; Movilla, Jose L.; Hennig, Jonas; Climente, Juan I.; Prudnikau, Anatol V.; Antanovich, Artsiom; Scott, Riccardo; Artemyev, Mikhail V.; Planelles, Josep; Woggon, Ulrike American Chemical Society (2014-12)We investigate the spectral dependence of the linear and two-photon absorption of wurtzite CdS nanoparticles (dots and rods) by means of quantitative one- and two-photon photoluminescence excitation spectroscopy and effective ...