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Ferromagnetism and the electronic band structure in (Ga,Mn)(Bi,As) epitaxial layers

In English

Författare

  • O. Yastrubchak
  • Janusz Sadowski
  • L. Gluba
  • J. Z. Domagala
  • M. Rawski
  • J. Zuk
  • M. Kulik
  • T. Andrearczyk
  • T. Wosinski

Summary, in English

Impact of Bi incorporation into (Ga,Mn)As layers on their electronic-and band-structures as well as their magnetic and structural properties has been studied. Homogenous (Ga,Mn)(Bi,As) layers of high structural perfection have been grown by the low-temperature molecular-beam epitaxy technique. Post-growth annealing treatment of the layers results in an improvement of their structural and magnetic properties and an increase in the hole concentration in the layers. The modulation photoreflectance spectroscopy results are consistent with the valence-band model of hole-mediated ferromagnetism in the layers. This material combines the properties of (Ga,Mn)As and Ga(Bi,As) ternary compounds and offers the possibility of tuning its electrical and magnetic properties by controlling the alloy composition. (C) 2014 AIP Publishing LLC.

Publiceringsår

2014

Språk

Engelska

Publikation/Tidskrift/Serie

Applied Physics Letters

Volym

105

Issue

7

Dokumenttyp

Artikel i tidskrift

Förlag

American Institute of Physics (AIP)

Ämne

  • Natural Sciences
  • Physical Sciences

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0003-6951