Helio Chacham
Helio Chacham
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Cited by
Third and fourth optical transitions in semiconducting carbon nanotubes
PT Araujo, SK Doorn, S Kilina, S Tretiak, E Einarsson, S Maruyama, ...
Physical Review Letters 98 (6), 067401, 2007
Stability of native defects in hexagonal and cubic boron nitride
W Orellana, H Chacham
Physical Review B 63 (12), 125205, 2001
Electronic structure and energetics of layered structures
MSC Mazzoni, RW Nunes, S Azevedo, H Chacham
Physical Review B—Condensed Matter and Materials Physics 73 (7), 073108, 2006
Disorder and segregation in B− C− N graphene-type layers and nanotubes: tuning the band gap
J da Rocha Martins, H Chacham
Acs Nano 5 (1), 385-393, 2011
Room‐temperature compression‐induced diamondization of few‐layer graphene
APM Barboza, MHD Guimaraes, DVP Massote, LC Campos, ...
Advanced Materials 23 (27), 3014, 2011
Stability, geometry, and electronic structure of the boron nitride B36N36 fullerene
SS Alexandre, MSC Mazzoni, H Chacham
Applied physics letters 75 (1), 61-63, 1999
Instabilities in diamond under high shear stress
H Chacham, L Kleinman
Physical review letters 85 (23), 4904, 2000
Bandgap closure of a flattened semiconductor carbon nanotube: a first-principles study
MSC Mazzoni, H Chacham
Applied Physics Letters 76 (12), 1561-1563, 2000
Small polarons in dry DNA
SS Alexandre, E Artacho, JM Soler, H Chacham
Physical review letters 91 (10), 108105, 2003
Structure and energetics of boron nitride fullerenes: The role of stoichiometry
SS Alexandre, H Chacham, RW Nunes
Physical Review B 63 (4), 045402, 2001
Metallization of solid hydrogen at megabar pressures: a first-principles quasiparticle study
H Chacham, SG Louie
Physical review letters 66 (1), 64, 1991
Electromechanical effects in carbon nanotubes: Ab initio and analytical tight-binding calculations
M Verissimo-Alves, B Koiller, H Chacham, RB Capaz
Physical Review B 67 (16), 161401, 2003
Structures of Si and Ge nanowires in the subnanometer range
R Kagimura, RW Nunes, H Chacham
Physical review letters 95 (11), 115502, 2005
Energetics of the oxidation and opening of a carbon nanotube
H Chacham, P Ordejon, D Sanchez-Portal, JM Soler, E Artacho
Physical Review B 60 (4), R2208, 1999
Enhancing the response of NH3 graphene-sensors by using devices with different graphene-substrate distances
AR Cadore, E Mania, AB Alencar, NP Rezende, S De Oliveira, ...
Sensors and Actuators B: Chemical 266, 438-446, 2018
Deformation induced semiconductor-metal transition in single wall carbon nanotubes probed by electric force microscopy
APM Barboza, AP Gomes, BS Archanjo, PT Araujo, A Jorio, AS Ferlauto, ...
Physical review letters 100 (25), 256804, 2008
Polarons in carbon nanotubes
M Verissimo-Alves, RB Capaz, B Koiller, E Artacho, H Chacham
Physical Review Letters 86 (15), 3372, 2001
Graphene Moiré patterns observed by umklapp double-resonance Raman scattering
A Righi, SD Costa, H Chacham, C Fantini, P Venezuela, C Magnuson, ...
Physical Review B—Condensed Matter and Materials Physics 84 (24), 241409, 2011
Stability of antiphase line defects in nanometer-sized boron nitride cones
S Azevedo, MSC Mazzoni, RW Nunes, H Chacham
Physical Review B—Condensed Matter and Materials Physics 70 (20), 205412, 2004
Dynamic Negative Compressibility of Few-Layer Graphene, h-BN, and MoS2
APM Barboza, H Chacham, CK Oliveira, TFD Fernandes, EHM Ferreira, ...
Nano letters 12 (5), 2313-2317, 2012
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