| Full text | |
| Author(s): Show less - |
Lopes-Oliveira, V.
[1]
;
Herval, L. K. S.
[1]
;
Orsi Gordo, V.
[1]
;
Cesar, D. F.
[1]
;
de Godoy, M. P. F.
[1]
;
Galvao Gobato, Y.
[1]
;
Henini, M.
[2]
;
Khatab, A.
[2, 3]
;
Sadeghi, M.
[4]
;
Wang, S.
[4]
;
Schmidbauer, M.
[5]
Total Authors: 11
|
| Affiliation: | [1] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Paulo - Brazil
[2] Univ Nottingham, Sch Phys & Astron, Nottingham Nanotechnol & Nanosci Ctr, Nottingham NG7 2RD - England
[3] Cairo Univ, Natl Inst Laser Enhanced Sci, Cairo - Egypt
[4] Chalmers, Photon Lab, Dept Microtechnol & Nanosci, S-41296 Gothenburg - Sweden
[5] Leibniz Inst Crystal Growth, D-12489 Berlin - Germany
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Journal of Applied Physics; v. 116, n. 23 DEC 21 2014. |
| Web of Science Citations: | 5 |
| Abstract | |
We investigated effects of localization and strain on the optical and magneto-optical properties of diluted nitrogen III-V quantum wells theoretically and experimentally. High-resolution x-ray diffraction, photoluminescence (PL), and magneto-PL measurements under high magnetic fields up to 15 T were performed at low temperatures. Bir-Pikus Hamiltonian formalism was used to study the influence of strain, confinement, and localization effects. The circularly polarized magneto-PL was interpreted considering localization aspects in the valence band ground state. An anomalous behavior of the electron-hole pair magnetic shift was observed at low magnetic fields, ascribed to the increase in the exciton reduced mass due to the negative effective mass of the valence band ground state. (C) 2014 AIP Publishing LLC. (AU) | |
| FAPESP's process: | 13/17657-2 - Synthesis and optical properties of semiconductor systems for spintronics |
| Grantee: | Marcio Peron Franco de Godoy |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 12/24055-6 - Optical, electrical and spin properties of semiconductor nanostructures and nanodevices |
| Grantee: | Yara Galvão Gobato |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 11/17944-6 - New nanooptical and nanoelectronic systems: characterization and application |
| Grantee: | Daniel Ferreira Cesar |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 12/02655-1 - Nanooptical systems and nanoelectronic devices |
| Grantee: | Victor Lopez Richard |
| Support Opportunities: | Regular Research Grants |