Excitonic Spin Dynamics in Coupled Quantum Dots of Diluted Magnetic Semiconductors

2005 ◽  
Author(s):  
A. Murayama
Keyword(s):  
Quantum Dots ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Spin Dynamics ◽  
Coupled Quantum Dots ◽  
Diluted Magnetic

Growth and characterization of In1−xMnxAs diluted magnetic semiconductors quantum dots

2005 ◽  
Vol 280 (1-2) ◽  
pp. 32-43 ◽  
Author(s):  
Jean-Louis Primus ◽  
Kang-Hoon Choi ◽  
Achim Trampert ◽  
Andrei M. Yakunin ◽  
Jacques Ferré ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic

TUNING THE "d0" FERROMAGNETISM IN In2O3 QUANTUM DOTS BY DANGLING BONDS AND VACANCY BASED ON THE FIRST-PRINCIPLE CALCULATION

2013 ◽  
Vol 27 (10) ◽  
pp. 1350068 ◽  
Author(s):  
HAI-BIN WANG ◽  
PING PENG ◽  
YUAN-HONG TANG ◽  
DAN WANG ◽  
LI-MING TANG
Keyword(s):  
Quantum Dots ◽  
Magnetic Moment ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Moments ◽  
Surface Oxygen ◽  
Dangling Bonds ◽  
Principle Calculation ◽  
First Principle Calculation ◽  
Diluted Magnetic

It is difficult to tune the magnetic properties of oxide diluted magnetic semiconductors because of the origin of ferromagnetism (FM) under different versions. Using first-principles band-structure calculations, we find that the surface oxygen dangling bonds and Indium vacancy may be responsible for the unexpected ferromagnetism in undoped In 2 O 3 quantum dots (QDs). The surface oxygen dangling bonds produce a magnetic moment of 6 μB, which primarily distribute on the surface oxygen atoms and an Indium vacancy ( V In ) produce a magnetic moment of 3 μB, which primarily distribute on the six O nearest neighbors of the vacancy center. The origin of the collective magnetic moments are the holes which introduced by the surface oxygen dangling bonds and Indium vacancy.

scholarly journals Dynamics of diluted magnetic semiconductors from atomistic spin-dynamics simulations: Mn-doped GaAs

2008 ◽  
Vol 78 (14) ◽  
Author(s):  
J. Hellsvik ◽  
B. Skubic ◽  
L. Nordström ◽  
B. Sanyal ◽  
O. Eriksson ◽  
...  
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Spin Dynamics ◽  
Diluted Magnetic ◽  
Dynamics Simulations ◽  
Mn Doped
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