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Metal-insulator Transition and Magnetic Domains in (Ga,Mn)As Epilayers

Published online by Cambridge University Press:  01 February 2011

Alexandre Dourlat ,
Catherine Gourdon ,
Vincent Jeudy ,
Frédéric Bernardot ,
Christophe Testelin ,
Emmanuelle Lacaze ,
Laura Thevenard ,
Olivia Mauguin ,
Ludovic Largeau  and
Gilles Patriarche
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Alexandre Dourlat
Affiliation:
[email protected], Universities Paris 6 and Paris 7, CNRS, Institut des Nanosciences de Paris, 140 rue de Lourmel, PARIS, N/A, 75015, France
Catherine Gourdon
Affiliation:
[email protected], Universities Paris 6 and Paris 7, CNRS, Institut des Nanosciences de Paris, 140 rue de Lourmel, PARIS, N/A, 75015, France
Vincent Jeudy
Affiliation:
[email protected], Universities Paris 6 and Paris 7, CNRS, Institut des Nanosciences de Paris, 140 rue de Lourmel, PARIS, N/A, 75015, France
Frédéric Bernardot
Affiliation:
[email protected], Universities Paris 6 and Paris 7, CNRS, Institut des Nanosciences de Paris, 140 rue de Lourmel, PARIS, N/A, 75015, France
Christophe Testelin
Affiliation:
[email protected], Universities Paris 6 and Paris 7, CNRS, Institut des Nanosciences de Paris, 140 rue de Lourmel, PARIS, N/A, 75015, France
Emmanuelle Lacaze
Affiliation:
[email protected], Universities Paris 6 and Paris 7, CNRS, Institut des Nanosciences de Paris, 140 rue de Lourmel, PARIS, N/A, 75015, France
Laura Thevenard
Affiliation:
[email protected], CNRS, Laboratoire de Photonique et Nanostructures, Route de Nozay, MARCOUSSIS, N/A, 91460, France
Olivia Mauguin
Affiliation:
[email protected], CNRS, Laboratoire de Photonique et Nanostructures, Route de Nozay, MARCOUSSIS, N/A, 91460, France
Ludovic Largeau
Affiliation:
[email protected], CNRS, Laboratoire de Photonique et Nanostructures, Route de Nozay, MARCOUSSIS, N/A, 91460, France
Gilles Patriarche
Affiliation:
[email protected], CNRS, Laboratoire de Photonique et Nanostructures, Route de Nozay, MARCOUSSIS, N/A, 91460, France
Aristide Lemaître
Affiliation:
[email protected], CNRS, Laboratoire de Photonique et Nanostructures, Route de Nozay, MARCOUSSIS, N/A, 91460, France
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Abstract

We investigate the magnetic domain pattern in (Ga,Mn)As epilayers with perpendicular magnetic anisotropy. We show that post-growth annealing, besides improving the magnetic and transport properties, also drastically changes the domain pattern. Strong pinning of domain walls along the <110> directions is suppressed and large-size domains are observed.

Keywords

ferromagneticIII-Vspintronic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 941: Symposium Q – Magnetic Thin Films, Heterostructures, and Device Materials , 2006 , 0941-Q07-11
Copyright
Copyright © Materials Research Society 2006

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References

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