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 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 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
28 2021 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 alloys in the metallic regime 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