First‐principles calculations on magnetism and exchange interactions in GaMnAs and GaMnAsP
First published: 10 July 2017
Abstract
Based on first principles calculations using a full
potential linearized augmented plane wave (FP‐LAPW) method in the local
spin density approximation (LSDA) we calculated the electronic and
magnetic properties of 
and 
.
The calculated electronic band structure and density of states of both
diluted magnetic semiconductors (DMSs) are discussed. These results show
a reduction in energy band gap in 
doped with a small content of P atoms (6.25% atomic percent) compared to the undoped alloy 
. Low exchange interaction constants, N0β, and 
and low exchange splitting, 
are observed in 
. The total magnetic moment calculated for 
is mainly attributed to the Mn atom, whereas the contributions from Ga,
As, and P are minimal. The difference between the magnetic properties
of 
and 
is also discussed.
and .
The calculated electronic band structure and density of states of both
diluted magnetic semiconductors (DMSs) are discussed. These results show
a reduction in energy band gap in doped with a small content of P atoms (6.25% atomic percent) compared to the undoped alloy . Low exchange interaction constants, N0β, and and low exchange splitting, are observed in . The total magnetic moment calculated for
is mainly attributed to the Mn atom, whereas the contributions from Ga,
As, and P are minimal. The difference between the magnetic properties
of and is also discussed.
https://sci-hub.tw/https://onlinelibrary.wiley.com/doi/abs/10.1002/pssb.201700115
Hello, my name is Dr Abderrahmane Reggad. I'm a 51 year old and I am a researcher in materials' sciences.
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