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Characterization and processing of semiconductor nanostructures and application as devices


This project has as its main goal, to implement and consolidate common efforts and the leadership between a numbers of researchers working in a key scientific and technological area, corroborating their common expertises. The main objective is to strength the preexisting collaboration between experimentalists and theoreticians through studies of related phenomena link to interface effects, confinement produced during epitaxial growth of semiconductor nanostructures: Heterostructures, quantum dots and rings, and different nanowire structures. These effects respond to and/or modulate the optical, transport, mechanical, magnetic and piezoelectric properties of these systems and, thus, form the basis for their applications as optoelectronic and spintronic devices. From their knowledge and control may result strategic elements that support the evolution of technological perspectives of design, synthesis, processing (doping, lithography, electric contacts, etc) and application of these nanostructures. This proposal is based on five inter-related and complementary pillars: (i) The design, growth and processing samples of nanostructured systems having optical windows and electric contacts; (ii) Their structural characterizations; (iii) Experimental characterization of optical, magnetic and transport properties; (iv) theoretical simulations, via molecular dynamics, of structural and dynamical properties (v) Simulation of optical and transport effects associated to classical elements provided from molecular dynamic results. The practical problems evidenced by the new research tendencies on the confined and extended states show the interesting basic questions to be studied, understood and, possibly, explored. Effects of different nature are present and their theoretical treatments, as well as refined experimental techniques attach to different areas of the Physics and require different methodologies to treat them. The themes of research in this proposal are focused, always as possible, to obtain original results in these new and highly strategic research lines. Certainly, they will allow introducing scientific initiation, undergraduate and graduate students to th fundamental experimental and theoretical tools that are important for development studies and projects in a broad area related to Condensed Matter Physics. In the present project we intend to proceed and give a deeper insight to the several research lines looking for characterization of electronic and spin properties of confined and extended states in semiconductor systems and, thus, to strength the different channels of important collaboration, between experimental as well as theoretical groups established in different national and international centers of research The general and broad themes composing this proposal, involving complementary theoretical and experimental techniques or approaches, may be grouped along the lines: 1. To control of spin properties, using electronic structure engineering of OD, 1D and 2D states in coupled systems where tunneling processes may be manipulates by different external field configurations. To understand the effects detect in the optical emissions (photoluminescence) and associated to spin dynamic of carriers in these semiconductor heterostructures. 2. To elucidate the role of strain-stress and the modulation of transport of carriers (electrons and holes) through quantum wires and other one-dimensional heretostructured systems. 3. To study effects of structural properties in quantum wire systems and one-dimensional chain of dots and the modification and modulation of their optical response and carrier mobilities. 4. To study and explore the spin-orbit effects on the properties of nanostructured systems. Study effects of hybridization of spin states on the anisotropy and on the modulation of the optical response. 5. Look for comprehension and characterization of nanomagnetism and anomalous diamagnetism. (AU)

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Scientific publications (17)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
CABRAL, L.; ANDRES, J.; MACHADO, T. R.; PICININ, A.; RINO, J. P.; LOPEZ-RICHARD, V.; LONGO, E.; GOUVEIA, A. F.; MARQUES, G. E.; DA SILVA, E. Z.; et al. Evidence for the formation of metallic In after laser irradiation of InP. Journal of Applied Physics, v. 126, n. 2, . (14/19142-2, 16/23891-6, 13/07296-2)
TRALLERO-GINER, C.; PADILHA, J. X.; LOPEZ-RICHARD, V.; MARQUES, G. E.; CASTELANO, L. K.. Quantum well electronic states in a tilted magnetic field. JOURNAL OF PHYSICS-CONDENSED MATTER, v. 29, n. 32, . (15/23619-1, 14/02112-3, 14/19142-2)
NARANJO, A.; BRAGANCA, H.; JACOBSEN, G. M.; DE MORAIS, R. R. O.; QUIVY, A. A.; MARQUES, G. E.; LOPEZ-RICHARD, V; TEODORO, M. D.. Magnetic and power tuning of spin-asymmetric multiple excitons in a GaAs quantum well. PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, v. 129, . (18/01914-0, 17/23668-8, 13/18719-1, 14/19142-2)
MONTERO-MUNOZ, M.; RAMOS-IBARRA, J. E.; RODRIGUEZ-PAEZ, J. E.; MARQUES, G. E.; TEODORO, M. D.; COAQUIRA, J. A. H.. Growth and formation mechanism of shape-selective preparation of ZnO structures: correlation of structural, vibrational and optical properties. Physical Chemistry Chemical Physics, v. 22, n. 14, p. 7329-7339, . (13/18719-1, 15/13771-0, 14/07375-2, 14/19142-2)
ARAGON, F. F. H.; VILLEGAS-LELOVSKY, L.; CABRAL, L.; LIMA, M. P.; AQUINO, J. C. R.; MATHPAL, M. C.; COAQUIRA, J. A. H.; DA SILVA, S. W.; NAGAMINE, L. C. C. M.; PARREIRAS, S. O.; et al. Tailoring the physical and chemical properties of Sn1-xCoxO2 nanoparticles: an experimental and theoretical approach. Physical Chemistry Chemical Physics, v. 22, n. 6, p. 3702-3714, . (17/02317-2, 16/21371-5, 14/19142-2)
CASTRO, E. D. GUARIN; PFENNING, A.; HARTMANN, F.; KNEBL, G.; TEODORO, M. DALDIN; MARQUES, G. E.; HOEFLING, S.; BASTARD, G.; LOPEZ-RICHARD, V. Optical Mapping of Nonequilibrium Charge Carriers. Journal of Physical Chemistry C, v. 125, n. 27, p. 14741-14750, . (18/01914-0, 14/07375-2, 14/19142-2, 14/02112-3)
LAURINDO JR, V; MAZUR, I, YU; DE OLIVEIRA, E. R. CARDOZO; ALEN, B.; WARE, M. E.; MAREGA JR, E.; ZHUCHENKO, Z. YA; TARASOV, G. G.; MARQUES, G. E.; TEODORO, M. D.; et al. Magnetically controlled exciton transfer in hybrid quantum-dot-quantum-well nanostructures. Physical Review B, v. 100, n. 3, . (13/18719-1, 14/07375-2, 14/19142-2, 18/01914-0)
ROCHA, LEANDRO S. R.; SCHIPANI, FEDERICO; ALDAO, CELSO M.; CABRAL, LUIS; SIMOES, ALEXANDRE Z.; MACCHI, CARLOS; MARQUES, GILMAR E.; PONCE, MIGUEL A.; LONGO, ELSON. Experimental and ab Initio Studies of Deep-Bulk Traps in Doped Rare-Earth Oxide Thick Films. Journal of Physical Chemistry C, v. 124, n. 1, p. 997-1007, . (18/20729-9, 13/07296-2, 14/19142-2, 18/20590-0, 16/25500-4, 17/19143-7)
LIMA, MATHEUS P.; CABRAL, L.; MARGAPOTI, EMANUELA; MAHAPATRA, SUDDHASATTA; DA SILVA, JUAREZ L. F.; HARTMANN, FABIAN; HOEFLING, SVEN; MARQUES, GILMAR E.; LOPEZ-RICHARD, VICTOR. Defect-induced magnetism in II-VI quantum dots. Physical Review B, v. 99, n. 1, . (14/02112-3, 14/19142-2, 17/11631-2)
CABRAL, L.; SABINO, FERNANDO P.; LIMA, MATHEUS P.; MARQUES, G. E.; LOPEZ-RICHARD, VICTOR; DA SILVA, JUAREZ L. F.. Azobenzene Adsorption on the MoS2(0001) Surface: A Density Functional Investigation within van der Waals Corrections. Journal of Physical Chemistry C, v. 122, n. 33, p. 18895-18901, . (14/02112-3, 14/19142-2)
LOMBARDI, G. A.; DE OLIVEIRA, F. M.; TEODORO, M. D.; CHIQUITO, A. J.. Investigation of trapping levels in p-type Zn(3)P(2 )nanowires using transport and optical properties. Applied Physics Letters, v. 112, n. 19, . (13/18719-1, 16/14381-4, 14/19142-2, 13/17639-4)
MONTERO-MUNOZ, MARLY; RAMOS-IBARRA, J. E.; RODRIGUEZ-PAEZ, JORGE E.; TEODORO, MARCIO D.; MARQUES, GILMAR E.; SANABRIA, ALFONSO R.; CAJAS, PAOLA C.; PAEZ, CARLOS A.; HEINRICHS, BENOIT; COAQUIRA, JOSE A. H.. Role of defects on the enhancement of the photocatalytic response of ZnO nanostructures. Applied Surface Science, v. 448, p. 646-654, . (13/18719-1, 15/13771-0, 14/07375-2, 14/19142-2)
CARDOZO DE OLIVEIRA, E. R.; PFENNING, A.; GUARIN CASTRO, E. D.; TEODORO, M. D.; DOS SANTOS, E. C.; LOPEZ-RICHARD, V.; MARQUES, G. E.; WORSCHECH, L.; HARTMANN, F.; HOEFLING, S.. Electroluminescence on-off ratio control of n-i-n GaAs/AlGaAs-based resonant tunneling structures. Physical Review B, v. 98, n. 7, . (14/19142-2, 13/18719-1, 14/07375-2, 16/50080-9, 14/02112-3)
DE MATOS RODRIGUES, MURILLO H.; RODRIGUES DE SOUSA, PRISCILA AFONSO; BORGES, KELLEN CRISTINA M.; COELHO, LUCIANA DE MELO; GONCALVES, ROSANA DE FATIMA; TEODORO, MARCIO DALDIN; DA MOTTA, FABIANA VILELLA; DO NASCIMENTO, RUBENS MARIBONDO; GODINHO JUNIOR, MARIO. Enhanced degradation of the antibiotic sulfamethoxazole by heterogeneous photocatalysis using Ce0,8Gd0,2O2-delta/TiO2 particles. Journal of Alloys and Compounds, v. 808, . (14/19142-2)
MENESES-GUSTIN, D.; CABRAL, LUIS; LIMA, MATHEUS P.; DA SILVA, JUAREZ L. F.; MARGAPOTI, EMANUELA; ULLOA, SERGIO E.; MARQUES, GILMAR E.; LOPEZ-RICHARD, VICTOR. Photomodulation of transport in monolayer dichalcogenides. Physical Review B, v. 98, n. 24, . (16/02065-0, 14/19142-2, 14/02112-3, 15/16175-0)
SANTIAGO-PEREZ, DARIO G.; TRALLERO-GINER, C.; MARQUES, G. E.. Electron-acoustic-phonon interaction in core/shell Ge/Si and Si/Ge nanowires. Physical Review B, v. 95, n. 15, . (15/23619-1, 14/19142-2)
CABRAL, L.; SABINO, FERNANDO P.; LOPES-OLIVEIRA, VIVALDO; DA SILVA, JUAREZ L. F.; LIMA, MATHEUS P.; MARQUES, GILMAR E.; LOPEZ-RICHARD, VICTOR. Interplay between structure asymmetry, defect-induced localization, and spin-orbit interaction in Mn-doped quantum dots. Physical Review B, v. 95, n. 20, . (14/19142-2, 14/02112-3)

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