Magnetic Polarons in Diluted Magnetic Semiconductors

2000 ◽  
pp. 179-209 ◽  
Author(s):  
S. Takeyama
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Polarons ◽  
Diluted Magnetic

Localized magnetic polarons in diluted magnetic semiconductors

1997 ◽  
Vol 82 (11) ◽  
pp. 5653-5657 ◽  
Author(s):  
W. E. Hagston ◽  
T. Stirner ◽  
J. Miao
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Polarons ◽  
Diluted Magnetic

Impurity-bound magnetic polarons in diluted magnetic semiconductors

1994 ◽  
Vol 50 (8) ◽  
pp. 5264-5271 ◽  
Author(s):  
W. E. Hagston ◽  
T. Stirner ◽  
P. Harrison ◽  
O. F. Holbrook ◽  
J. P. Goodwin
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Polarons ◽  
Diluted Magnetic

Dynamics of excitonic magnetic polarons in nanostructure diluted magnetic semiconductors

1999 ◽  
Vol 83-84 ◽  
pp. 83-89 ◽  
Author(s):  
Yasuo Oka ◽  
Jinxi Shen ◽  
Kazumasa Takabayashi ◽  
Nobuhiro Takahashi ◽  
Hiroyuki Mitsu ◽  
...  
Keyword(s):  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Polarons ◽  
Diluted Magnetic

Spin-Texture in Acceptor-Bound Magnetic Polarons

1986 ◽  
Vol 89 ◽  
Author(s):  
Eric D. Isaacs ◽  
Peter A. Wolff
Keyword(s):  
Neutron Scattering ◽  
Valence Band ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Polaron ◽  
Spin Orbit ◽  
Bound Magnetic Polaron ◽  
Magnetic Polarons ◽  
Diluted Magnetic ◽  
Spin Texture

AbstractWe outline a theory of the acceptor-bound magnetic polaron in cubic diluted magnetic semiconductors that exhibits a nonuniform magnetization. Calculations show that the manganese spins have an overall z-alignment, but are canted in an azimuthally symmetric way from that direction. This is new phenomenon we call BMP spin-texture. Spin-texture results from valence band degeneracy, and the important spin-orbit effects associated with it. The possibility of studying BMP spin-texture via neutron scattering is discussed.

What Limits Magnetic Polaron Energies in DMS?

1986 ◽  
Vol 89 ◽  
Author(s):  
P. A. Wolff ◽  
L. R. Ram-Mohan
Keyword(s):  
Optical Properties ◽  
Exchange Interaction ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Exchange Potential ◽  
Magnetic Polaron ◽  
Bound Magnetic Polaron ◽  
Magnetic Polarons ◽  
Spin Clusters ◽  
Diluted Magnetic

Magnetic polarons are ferromagnetic spin clusters created by the exchange interaction of a carrier spin (electron or hole) with localized spins imbedded in a semiconductor lattice. They were first studied in magnetic semiconductors [1]; more recently, there have been extensive investigations [2] of polaron behavior in diluted magnetic semiconductors (DMS), such as Cd1−xMnxTe. DMS are favorable media for magnetic polaron studies because they have simple s-p bands and excellent optical properties. Two types of magnetic polarons have been identified in DMS - the bound magnetic polaron (BMP), whose carrier is localized by an impurity [3], and the free polaron (FP) consisting of a carrier trapped by its own, self-consistently-maintained, exchange potential [4].

THEORY OF BOUND MAGNETIC POLARONS IN DILUTED MAGNETIC SEMICONDUCTORS

1989 ◽  
Vol 03 (03) ◽  
pp. 337-366 ◽  
Author(s):  
U. THIBBLIN
Keyword(s):  
Present Status ◽  
Diluted Magnetic Semiconductors ◽  
Magnetic Semiconductors ◽  
Magnetic Polarons ◽  
Diluted Magnetic ◽  
Theory And Experiments

The present status of the theory of bound magnetic polarons in diluted magnetic semiconductors is reviewed. Optical experiments on bound magnetic polarons and a comparison between theory and experiments are discussed.

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