Результаты исследований: Научные публикации в периодических изданиях › статья
DFT modeling of Mn charged states in Ga1 − x Mn x As diluted ferromagnetic semiconductors: The cluster approach. / Krauklis, I.V.; Yu Podkopaeva, O.Y.; Chizhov, Y.V.
в: Semiconductors, Том 48, № 8, 2014, стр. 1010-1016.Результаты исследований: Научные публикации в периодических изданиях › статья
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TY - JOUR
T1 - DFT modeling of Mn charged states in Ga1 − x Mn x As diluted ferromagnetic semiconductors: The cluster approach
AU - Krauklis, I.V.
AU - Yu Podkopaeva, O.Y.
AU - Chizhov, Y.V.
PY - 2014
Y1 - 2014
N2 - Abstract—Quantum chemical cluster modeling of the high-symmetry nanoclusters Ga15MnAs16H36 and Ga12MnAs16H36 simulating the bulk of a GaAs crystal with Mn paramagnetic impurity center is carried out within the Density Functional Theory. A Generalized Gradient Approximation method PBEPBE/LanL2DZ is used to study the neutral Mn0 and ionized Mn– states of a Mn atom in the nanoclusters under consideration. The change of the charge state of the impurity center from Mn0 to Mn– leads to a considerable relaxation of Mn–As bonds in the immediate surroundings of the Mn atom and to the “p-hole” recombination. It also affects the spin density localization. The components of the g-tensor for both the neutral Mn0 and the ionized Mn– states are calculated by the Gauge-Independent Atomic Orbital (GIAO) method with the hybrid density-functional mPW1PW91. The resulting values of the g-factor are in good agreement with the experimental Electron Para-magnetic Resonance data. The results obtained confirm the applicability of the
AB - Abstract—Quantum chemical cluster modeling of the high-symmetry nanoclusters Ga15MnAs16H36 and Ga12MnAs16H36 simulating the bulk of a GaAs crystal with Mn paramagnetic impurity center is carried out within the Density Functional Theory. A Generalized Gradient Approximation method PBEPBE/LanL2DZ is used to study the neutral Mn0 and ionized Mn– states of a Mn atom in the nanoclusters under consideration. The change of the charge state of the impurity center from Mn0 to Mn– leads to a considerable relaxation of Mn–As bonds in the immediate surroundings of the Mn atom and to the “p-hole” recombination. It also affects the spin density localization. The components of the g-tensor for both the neutral Mn0 and the ionized Mn– states are calculated by the Gauge-Independent Atomic Orbital (GIAO) method with the hybrid density-functional mPW1PW91. The resulting values of the g-factor are in good agreement with the experimental Electron Para-magnetic Resonance data. The results obtained confirm the applicability of the
U2 - 10.1134/S1063782614080168
DO - 10.1134/S1063782614080168
M3 - Article
VL - 48
SP - 1010
EP - 1016
JO - Semiconductors
JF - Semiconductors
SN - 1063-7826
IS - 8
ER -
ID: 7010240