Absence of ferromagnetic order in high quality bulk Co-doped ZnO samples HB De Carvalho, MPF De Godoy, RWD Paes, M Mir, A Ortiz de Zevallos, ...
Journal of applied physics 108 (3), 2010
82 2010 Room temperature ferromagnetism in cubic GaN epilayers implanted with Mn+ ions VA Chitta, JAH Coaquira, JRL Fernandez, CA Duarte, JR Leite, ...
Applied physics letters 85 (17), 3777-3779, 2004
73 2004 Room temperature ferromagnetism promoted by defects at zinc sites in Mn-doped ZnO VM De Almeida, A Mesquita, AO De Zevallos, NC Mamani, PP Neves, ...
Journal of Alloys and Compounds 655, 406-414, 2016
63 2016 Evidence of defect-mediated magnetic coupling on hydrogenated Co-doped ZnO MPF De Godoy, A Mesquita, W Avansi, PP Neves, VA Chitta, WB Ferraz, ...
Journal of Alloys and Compounds 555, 315-319, 2013
50 2013 Observation of charged X− and X+ excitons and metal-to-insulator transition in CdTe/CdMgZnte modulation-doped quantum wells A Haury, A Arnoult, VA Chitta, J Cibert, YM d'Aubigné, S Tatarenko, ...
Superlattices and microstructures 23 (5), 1097-1102, 1998
47 1998 Multivalley transport and the integer quantum Hall effect in a PbTe quantum well VA Chitta, W Desrat, DK Maude, BA Piot, NF Oliveira Jr, PHO Rappl, ...
Physical review B 72 (19), 195326, 2005
39 2005 Experimental investigation of spin-orbit coupling in n-type PbTe quantum wells ML Peres, HS Monteiro, VA Chitta, S de Castro, UA Mengui, PHO Rappl, ...
Journal of Applied Physics 115 (9), 2014
31 2014 Defect induced room temperature ferromagnetism in high quality Co-doped ZnO bulk samples MPF de Godoy, X Gratens, VA Chitta, A Mesquita, MM de Lima Jr, ...
Journal of Alloys and Compounds 859, 157772, 2021
29 2021 Evidence of Cr3+ and Cr4+ Coexistence in Chromium-Doped SnO2 Nanoparticles: A Structural and Magnetic Study JCR Aquino, FH Aragón, JAH Coaquira, X Gratens, VA Chitta, I Gonzales, ...
The Journal of Physical Chemistry C 121 (39), 21670-21677, 2017
29 2017 Hole mobility in zincblende c–GaN CG Rodrigues, JRL Fernandez, JR Leite, VA Chitta, VN Freire, ...
Journal of Applied Physics 95 (9), 4914-4917, 2004
28 2004 Resonant tunnelling at far infra-red frequencies VA Chitta, C Kutter, REM De Bekker, JC Maan, SJ Hawksworth, ...
Journal of Physics: Condensed Matter 6 (21), 3945, 1994
27 1994 Far infrared response of double barrier resonant tunneling structures VA Chitta, REM De Bekker, JC Maan, SJ Hawksworth, JM Chamberlain, ...
Surface science 263 (1-3), 227-230, 1992
26 1992 Dynamics of the incorporation of Co into the wurtzite ZnO matrix and its magnetic properties A Mesquita, FP Rhodes, RT Da Silva, PP Neves, AO De Zevallos, ...
Journal of Alloys and Compounds 637, 407-417, 2015
25 2015 Multifunctional nanostructured Co-doped ZnO: Co spatial distribution and correlated magnetic properties RT Da Silva, A Mesquita, AO De Zevallos, T Chiaramonte, X Gratens, ...
Physical Chemistry Chemical Physics 20 (30), 20257-20269, 2018
23 2018 Magnetic resonant x-ray diffraction study of europium telluride B Díaz, E Granado, E Abramof, PHO Rappl, VA Chitta, AB Henriques
Physical Review B 78 (13), 134423, 2008
23 2008 Antilocalization of hole carriers in ML Peres, VA Chitta, NF Oliveira Jr, DK Maude, PHO Rappl, AY Ueta, ...
Physical Review B 79 (8), 085309, 2009
20 2009 Singlet—triplet level crossings in matrix-isolated pentacene S Astilean, V Chitta, A Corval, RJD Miller, HP Trommsdorff
Chemical physics letters 219 (1-2), 95-100, 1994
20 1994 Spin-polarized current in semimagnetic semiconductor heterostructures VA Chitta, MZ Maialle, SA Leao, MH Degani
Applied physics letters 74 (19), 2845-2847, 1999
19 1999 MBE growth and characterization of Sn1-xEu xTe AY Ueta, PHO Rappl, H Closs, P Motisuke, E Abramof, VR dos Anjos, ...
Brazilian journal of physics 34, 672-674, 2004
18 2004 Electrical Characterization of p -Type Pb1−x Eu x Te JAH Coaquira, VA Chitta, NF Oliveira, PHO Rappl, AY Ueta, E Abramof, ...
Journal of superconductivity 16, 115-118, 2003
18 2003 