Abstract
Magnetic circular dichroism is used to investigate the evolution of ferromagnetism in the $p$-type magnetic semiconductor $({\mathrm{Ga}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x})\mathrm{As}$. Local Mn moments and holes produce two spectroscopically distinct contributions, whose properties reveal an antiferromagnetic Mn-hole alignment in the ferromagnetic state. These components are present in both metallic and insulating samples with different temperature and field dependences, suggesting that the holes play a more active role in mediating the ferromagnetic exchange than in traditional RKKY systems.
Keywords
FerromagnetismAntiferromagnetismMagnetic circular dichroismCondensed matter physicsMagnetic semiconductorPhysicsMaterials scienceCrystallographyChemistryQuantum mechanicsSpectral line
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Publication Info
- Year
- 1999
- Type
- article
- Volume
- 83
- Issue
- 15
- Pages
- 3073-3076
- Citations
- 267
- Access
- Closed
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Cite This
Bernd Beschoten,
P. A. Crowell,
I. Malajovich
et al.
(1999).
Magnetic Circular Dichroism Studies of Carrier-Induced Ferromagnetism in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>(</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ga</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi mathvariant="italic">x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Mn</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>)</mml:mo><mml:mi mathvariant="normal">As</mml:mi></mml:math>.
Physical Review Letters
, 83
(15)
, 3073-3076.
https://doi.org/10.1103/physrevlett.83.3073
Identifiers
- DOI
- 10.1103/physrevlett.83.3073