Simulation of a tunable optically pumped terahertz intersubband laser with diluted magnetic semiconductors

2006 ◽  
Vol 100 (7) ◽  
pp. 073709 ◽  
Author(s):  
Miloš Popadić ◽  
Vitomir Milanović ◽  
Zoran Ikonić ◽  
Dragan Indjin
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Optically Pumped ◽  
Diluted Magnetic ◽  
Intersubband Laser

CARRIER-DENSITY DEPENDENCE OF THE EXCHANGE COUPLING BETWEEN MAGNETIC IONS AND CONDUCTION BAND ELECTRONS IN HEAVILY n-TYPE Zn(1-x)MnxSe AND OPTICALLY PUMPED Cd(1-x)MnxTe

2007 ◽  
Vol 21 (08n09) ◽  
pp. 1632-1637 ◽  
Author(s):  
M. LENTZE ◽  
P. GRABS ◽  
J. GEURTS ◽  
K. RÖNNBURG ◽  
E. MOHLER ◽  
...  
Keyword(s):  
Conduction Band ◽  
Exchange Coupling ◽  
Carrier Density ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Optically Pumped ◽  
Time Resolved ◽  
Electronic Spin ◽  
Ferromagnetic Character ◽  
Diluted Magnetic

We report on the analysis of the influence of carrier concentration on the exchange coupling between conduction band electrons and Mn d-electrons in diluted magnetic semiconductors. For this analysis we employed (i) electronic spin-flip Raman spectroscopy on heavily n-doped ( Zn , Mn ) Se , (ii) time-resolved Faraday rotation on optically pumped ( Cd , Mn ) Te . With increasing carrier density, a reduction of the exchange energy N0α up to 30 % is observed. It is explained by a weakening of the ferromagnetic character of the coupling of conducton-band electrons to the Mn d-electrons by an admixture of an antiferromagnetic (p-d) coupling contribution to the ferromagnetic (s-d) one for q ≠ 0.

THE MAGNETIC PROPERTIES OF II-VI GROUP Fe-TYPE DILUTED MAGNETIC SEMICONDUCTORS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-873-C8-874
Author(s):  
H. J. M. Swagten ◽  
A. Twardowski ◽  
F. A. Arnouts ◽  
W. J. M. de Jonge ◽  
M. Demianiuk
Keyword(s):  
Magnetic Properties ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic

Assessment of the H2 Followed by Air Sintering of Co-doped In2O3 Based Diluted Magnetic Semiconductors

2017 ◽  
Vol 9 (2) ◽  
pp. 02003-1-02003-3
Author(s):  
Rana Mukherji ◽  
◽  
Vishal Mathur ◽  
Arvind Samariya ◽  
Manishita Mukherji ◽  
...  
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic ◽  
Co Doped

scholarly journals The Al Doping Effect on Epitaxial (In,Mn)As Dilute Magnetic Semiconductors Prepared by Ion Implantation and Pulsed Laser Melting

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4138
Author(s):  
Ye Yuan ◽  
Yufang Xie ◽  
Ning Yuan ◽  
Mao Wang ◽  
René Heller ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Ion Implantation ◽  
Diluted Magnetic Semiconductors ◽  
Laser Annealing ◽  
Magnetic Semiconductors ◽  
Dilute Magnetic Semiconductors ◽  
Pulsed Laser ◽  
Laser Melting ◽  
Co Doping ◽  
Diluted Magnetic

One of the most attractive characteristics of diluted ferromagnetic semiconductors is the possibility to modulate their electronic and ferromagnetic properties, coupled by itinerant holes through various means. A prominent example is the modification of Curie temperature and magnetic anisotropy by ion implantation and pulsed laser melting in III–V diluted magnetic semiconductors. In this study, to the best of our knowledge, we performed, for the first time, the co-doping of (In,Mn)As diluted magnetic semiconductors by Al by co-implantation subsequently combined with a pulsed laser annealing technique. Additionally, the structural and magnetic properties were systematically investigated by gradually raising the Al implantation fluence. Unexpectedly, under a well-preserved epitaxial structure, all samples presented weaken Curie temperature, magnetization, as well as uniaxial magnetic anisotropies when more aluminum was involved. Such a phenomenon is probably due to enhanced carrier localization introduced by Al or the suppression of substitutional Mn atoms.

Neutron diffraction studies of diluted magnetic semiconductors (invited)

1982 ◽  
Vol 53 (11) ◽  
pp. 7644-7648 ◽  
Author(s):  
G. Dolling ◽  
T. M. Holden ◽  
V. F. Sears ◽  
J. K. Furdyna ◽  
W. Giriat
Keyword(s):  
Neutron Diffraction ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Diluted Magnetic
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