Premium
Fundamental Properties of Transition‐Metals‐Adsorbed Graphene
Author(s) -
Tran Ngoc Thanh Thuy,
Nguyen Duy Khanh,
Lin ShihYang,
Gumbs Godfrey,
Lin MingFa
Publication year - 2019
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201900614
Subject(s) - graphene , transition metal , magnetic moment , atom (system on chip) , ferromagnetism , density of states , condensed matter physics , charge density , density functional theory , spin (aerodynamics) , materials science , binding energy , bond length , electronic structure , electronic band structure , band gap , doping , spin polarization , chemistry , atomic physics , computational chemistry , physics , nanotechnology , crystallography , electron , crystal structure , thermodynamics , biochemistry , quantum mechanics , computer science , embedded system , catalysis
The revealing properties of transition metal (T)‐doped graphene systems are investigated with the use of the first‐principles method. The detailed calculations cover the bond length, position and height of adatoms, binding energy, atom‐dominated band structure, adatom‐induced free carrier density as well as energy gap, spin‐density distributions, spatial charge distribution, and atom‐, orbital‐ and spin‐projected density‐of‐states (DOS). The magnetic configurations are clearly identified from the total magnetic moments, spin‐split energy bands, spin‐density distributions and spin‐decomposed DOS. Moreover, the single‐ or multi‐orbital hybridizations in T−C, T−T, and C−C bonds can be accurately deduced from the careful analyses of the above‐mentioned physical quantities. They are responsible for the optimal geometric structure, the unusual electronic properties, as well as the diverse magnetic properties. All the doped systems are metals except for the low‐concentration Ni‐doped ones with semiconducting behavior. In contrast, ferromagnetism is exhibited in various Fe/Co‐concentrations but only under high Ni‐concentrations. Our theoretical predictions are compared with available experimental data, and potential applications are also discussed.