Magnetic Properties of Short Period InGaMnAs/InGaAs Superlattices

• Authors: J. Sadowski , R. Mathieu , P. Svedlindh , J. Kanski , M. Karlsteen , K. Świątek , J. Domagała
• Languages of publication: EN

Abstracts

EN

We have observed a paramagnetic-to-ferromagnetic phase transition in short period InGaMnAs/InGaAs superlattices. The thicknesses of magnetic InGaMnAs layers in the structures studied was chosen to be 4 or 8 molecular layers (12Å or 24Å). The non-magnetic InGaAs spacer layers are 12Å thick. The composition (In content) in InGaMnAs and InGaAs was chosen in such a way that magnetic layers were: deep potential wells, high potential barriers, or shallow potential wells. For superlattices with 8 monolayer thick InGaMnAs magnetic layers and 4 monolayer thick InGaAs non-magnetic spacers the temperatures of paramagnetic-to-ferromagnetic phase transition do not depend on the band offsets between InGaMnAs and InGaAs adjusted by the In content.

Keywords

EN

75.75.+a; 75.50.Pp; 75.25.+z

Discipline

• 75.50.Pp: Magnetic semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2002
• Volume: 102
• Issue: 4-5
• Pages: 687-694

Dates

published

2002-10/11

received

2002-06-07

Contributors

author

J. Sadowski

• Niels Bohr Institute, Copenhagen University, 2100 Copenhagen, Denmark
• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland
• Chalmers University of Technology, 412 96 Göteborg, Sweden
• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

R. Mathieu

• Uppsala University, Department of Materials Science, 751 21 Uppsala, Sweden

author

P. Svedlindh

• Uppsala University, Department of Materials Science, 751 21 Uppsala, Sweden

author

J. Kanski

• Chalmers University of Technology, 412 96 Göteborg, Sweden

author

M. Karlsteen

• Chalmers University of Technology, 412 96 Göteborg, Sweden

author

K. Świątek

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

author

J. Domagała

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland

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Identifiers

DOI

10.12693/APhysPolA.102.687