Chemical and magnetic interactions in Mn- and Fe-codoped Ge diluted magnetic semiconductors

2009 ◽  
Vol 79 (21) ◽  
Author(s):  
Amitesh Paul ◽  
Biplab Sanyal
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Interactions ◽  
Diluted Magnetic

Electronic Theory of Mn - Alloyed Diluted Magnetic Semiconductors

1986 ◽  
Vol 89 ◽  
Author(s):  
H. Ehrenreich ◽  
K. C. Hass ◽  
B. E. Larson ◽  
N. F. Johnson
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Tight Binding ◽  
Magnetic Interactions ◽  
Potential Approximation ◽  
Exchange Constants ◽  
Density Band ◽  
Level Model ◽  
Diluted Magnetic ◽  
Valence Bands

AbstractRecent calculations of the electronic structure and magnetic interactions in Mn - alloyed II-VI diluted magnetic semiconductors (DMS) are summarized. Detailed band structure results are obtained using an empirical tight-binding, coherent potential approximation approach with input from experiment and local spin density band calculations. The dominant magnetic interactions in these systems result from hybridization between spin-split Mn d states and sp valence bands. Superexchange between Mn moments is well described by a simple three-level model which yields accurate Mn - Mn exchange constants for a variety of II-VI DMS as well as the rocksalt insulators MnO and α-MnS.

Analysis of long‐range magnetic interactions in diluted magnetic semiconductors (abstract)

1987 ◽  
Vol 61 (8) ◽  
pp. 3558-3558
Author(s):  
K. Kopinga ◽  
W. J. M. de Jonge ◽  
C. J. M. Denissen ◽  
V. A. M. Brabers ◽  
H. Nishihara ◽  
...  
Keyword(s):  
Long Range ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Interactions ◽  
Diluted Magnetic

Magnetic interactions with charge carriers in III–V diluted magnetic semiconductors

1998 ◽  
Vol 246-247 ◽  
pp. 258-261 ◽  
Author(s):  
L. Van Bockstal ◽  
A. Van Esch ◽  
R. Bogaerts ◽  
F. Herlach ◽  
A. van Steenbergen ◽  
...  
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Charge Carriers ◽  
Magnetic Interactions ◽  
Diluted Magnetic

Magnetic interactions in diluted magnetic semiconductors

1986 ◽  
Vol 54-57 ◽  
pp. 1283-1284 ◽  
Author(s):  
K.C. Hass ◽  
B.E. Larson ◽  
H. Ehrenreich ◽  
A.E. Carlsson
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Interactions ◽  
Diluted Magnetic

The Relevance of Long-Range Interactions in Diluted Magnetic Semiconductors

1986 ◽  
Vol 89 ◽  
Author(s):  
W. J. M. De Jonge ◽  
Twardowski A ◽  
Denissen C.J.M.
Keyword(s):  
Long Range ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Freezing Temperature ◽  
Magnetic Interactions ◽  
Radial Dependence ◽  
Range Interaction ◽  
Long Range Interactions ◽  
Long Range Interaction ◽  
Diluted Magnetic

AbstractData are presented yielding evidence on the long-range character of magnetic interactions in Diluted Magnetic Semiconductors. The radial dependence of these interactions is deduced from the concentration dependence of the freezing temperature. It is shown that calculations of the thermodynamic properties, which include this long-range interaction, are in fair agreement with the experimental data.

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