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Electron Spectroscopic Studies of Homogenous (GaMn) As Layers

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Author

  • Intikab Ulfat
  • Johann Adell
  • Prabir Pal
  • Janusz Sadowski
  • Lars Ilver
  • Janusz Kanski

Summary, in English

By incorporating magnetism into semiconductors, it may possibly be viable to enhance the functionality of materials. An exceptionally important material in this context is GaAs, which can be doped with Mn atoms. (GaMn)As has fascinated research community as a promising candidate for spintronic application. It is quite appealing due to both its compatibility with existing III-V technology and great progress in improving its magnetic properties. Being fabricated by low temperature molecular beam epitaxy (LT-MBE), due to thermal instability at elevated temperatures, the material contains a high density of various defects compensating Mn acceptors. It is a well-established fact that the ferromagnetic state of (GaMn)As can be stabilized via post growth annealing. Nevertheless, in general, the annealed (GaMn)As layers do not remain useful for further epitaxial overgrowth that might be included in multilayer structure. We present a summary of our investigations regarding the synchrotron-based characterization of (GaMn)As layers grown via molecular beam epitaxy carried out at the Swedish National Facility of Synchrotron Radiation-the MAX-lab aiming at the reduction of the density of Mn interstitial and increase in the content of Mn.

Department/s

Publishing year

2012

Language

English

Pages

380-384

Publication/Series

Advanced Materials Research

Volume

463-464

Document type

Journal article

Publisher

Trans Tech Publications

Topic

  • Physical Sciences
  • Natural Sciences

Keywords

  • (Ga
  • Mn)As
  • synchrotron-based characterozation
  • diluted magnetic semiconductors

Status

Published

ISBN/ISSN/Other

  • ISSN: 1022-6680