TY - JOUR
T1 - Size-dependent spintronic properties of dilute magnetic semiconductor nanocrystals
AU - Huang, Xiangyang
AU - Makmal, Adi
AU - Chelikowsky, James R.
AU - Kronik, Leeor
PY - 2005/6/17
Y1 - 2005/6/17
N2 - The electronic structure and magnetic properties of Mn-doped Ge, GaAs, and ZnSe nanocrystals are investigated using real space ab initio pseudopotentials constructed within the local spin-density approximation. The ferromagnetic and half-metallicity trends found in the bulk are preserved in the nanocrystals. However, the Mn-related impurity states become much deeper in energy with decreasing nanocrystalline size, causing the ferromagnetic stabilization to be dominated by double exchange via localized holes rather than by a Zener-like mechanism.
AB - The electronic structure and magnetic properties of Mn-doped Ge, GaAs, and ZnSe nanocrystals are investigated using real space ab initio pseudopotentials constructed within the local spin-density approximation. The ferromagnetic and half-metallicity trends found in the bulk are preserved in the nanocrystals. However, the Mn-related impurity states become much deeper in energy with decreasing nanocrystalline size, causing the ferromagnetic stabilization to be dominated by double exchange via localized holes rather than by a Zener-like mechanism.
UR - http://www.scopus.com/inward/record.url?scp=27744581336&partnerID=8YFLogxK
U2 - 10.1103/physrevlett.94.236801
DO - 10.1103/physrevlett.94.236801
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AN - SCOPUS:27744581336
SN - 0031-9007
VL - 94
JO - Physical Review Letters
JF - Physical Review Letters
IS - 23
M1 - 236801
ER -