Interlayer exchange coupling in GaN-based diluted magnetic semiconductor multilayers studied by first-principles calculations

2011 ◽  
Vol 109 (12) ◽  
pp. 123720 ◽  
Author(s):  
M. Luo ◽  
Z. Tang ◽  
Z. Q. Zhu ◽  
J. H. Chu
Keyword(s):  
First Principles ◽  
Exchange Coupling ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
First Principles Calculations ◽  
Interlayer Exchange Coupling ◽  
Diluted Magnetic ◽  
Interlayer Exchange

Electronic and magnetic properties of F atoms adsorbed on TiO2:Mn(001) diluted magnetic semiconductor surfaces: First-principles calculations

2014 ◽  
Vol 28 (18) ◽  
pp. 1450096 ◽  
Author(s):  
Chunlei Wang ◽  
Dan Li ◽  
Yuan Niu ◽  
Hongmin Zhao ◽  
Chunjun Liang
Keyword(s):  
First Principles ◽  
Formation Energy ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Moments ◽  
Magnetic Semiconductor ◽  
First Principles Calculations ◽  
Ion Doping ◽  
Diluted Magnetic ◽  
The Stability ◽  
Mn Doped

We performed first-principles calculations for two Mn -doped structures in which Mn atoms substitute Ti atoms to determine whether (i) it is more conducive to Mn ion doping and (ii) ferromagnetism can occur in F adsorption anatase TiO 2 surfaces. Ferromagnetic (FM) coupling is more stable than antiferromagnetic (AFM) coupling for all doping configurations as the adsorption of F atoms on the surface significantly lowers the formation energy of the TiO 2: Mn system. The magnetic moments of the Mn ions are reduced, whereas those of O atoms on the surface are increased. The magnetic moment of the O atoms is mainly derived from the spin polarization p x and p y orbitals. F adsorption promotes doping of Mn atoms and to a certain extent improves the stability of the structure, magnetism and metallicity.

First-principles and Monte Carlo combinational study on Zn1−xCoxO diluted magnetic semiconductor

2007 ◽  
Vol 142 (4) ◽  
pp. 242-246 ◽  
Author(s):  
Q.Y. Wu ◽  
Z.G. Chen ◽  
R. Wu ◽  
G.G. Xu ◽  
Z.G. Huang ◽  
...  
Keyword(s):  
Monte Carlo ◽  
First Principles ◽  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Diluted Magnetic
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