Magnetooptical Properties of (Ga,Fe)N Layers

• Authors: J. Papierska , J. Rousset , W. Pacuski , P. Kossacki , A. Golnik , M. Nawrocki , J. Gaj , J. Suffczyński , I. Kowalik , W. Stefanowicz , M. Sawicki , T. Dietl , A. Navarro-Quezada , B. Faina , T. Li , A. Bonanni
• Languages of publication: EN

Abstracts

EN

Magnetooptical properties of (Ga,Fe)N layers containing various concentrations of Fe-rich nanocrystals embedded in paramagnetic (Ga,Fe)N layers are reported. Previous studies of such samples demonstrated that magnetization consists of a paramagnetic contribution due to substitutional diluted Fe ions as well as of ferromagnetic and antiferromagnetic components originating from Fe-rich nanocrystals, whose relative abundance can be controlled by the growth conditions. The nanocrystals are found to broaden and to reduce the magnitude of the excitonic features. However, the ferromagnetic contribution, clearly seen in SQUID magnetometry, is not revealed by magnetic circular dichroism. Possible reasons for differences in magnetic response determined by magnetic circular dichroism and SQUID measurements are discussed.

Keywords

EN

75.50.Pp; 75.30.Hx; 78.20.Ls; 71.35.Ji

Discipline

• 78.20.Ls: Magneto-optical effects(for magneto-optical devices, see 85.70.Sq)
• 71.35.Ji: Excitons in magnetic fields; magnetoexcitons
• 75.30.Hx: Magnetic impurity interactions
• 75.50.Pp: Magnetic semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 120
• Issue: 5
• Pages: 921-923

Dates

published

2011-11

Contributors

author

J. Papierska

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

J. Rousset

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

W. Pacuski

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

P. Kossacki

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

A. Golnik

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

M. Nawrocki

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

J. Gaj

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

J. Suffczyński

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland

author

I. Kowalik

• Institute of Physics, Polish Academy of Sciences, Warsaw, Poland

author

W. Stefanowicz

• Institute of Physics, Polish Academy of Sciences, Warsaw, Poland

author

M. Sawicki

• Institute of Physics, Polish Academy of Sciences, Warsaw, Poland

author

T. Dietl

• Faculty of Physics, University of Warsaw, Hoża 69, 00-681 Warsaw, Poland
• Institute of Physics, Polish Academy of Sciences, Warsaw, Poland

author

A. Navarro-Quezada

• Johannes Kepler University of Linz, Linz, Austria

author

B. Faina

• Johannes Kepler University of Linz, Linz, Austria

author

T. Li

• Johannes Kepler University of Linz, Linz, Austria

author

A. Bonanni

• Johannes Kepler University of Linz, Linz, Austria

References

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• 5. A. Navarro-Quezada, W. Stefanowicz, Tian Li, B. Faina, M. Rovezzi, R.T. Fechner, T. Devillers, F. d'Acapito, G. Bauer, M. Sawicki, T. Dietl, A. Bonanni, Phys. Rev. B 81, 205206 (2010)
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Identifiers

DOI

10.12693/APhysPolA.120.921