MnAs Overlayer on GaN(000_1)-(1 x 1) - Its Growth, Morphology and Electronic Structure

• Authors: B. Kowalski , I. Kowalik , R. Iwanowski , E. Łusakowska , M. Sawicki , J. Sadowski , I. Grzegory , S. Porowski
• Languages of publication: EN

Abstracts

EN

MnAs layer has been grown by means of MBE on the GaN(000_1)-(1 x 1) surface. Spontaneous formation of MnAs grains with a diameter of 30-60 nm (as observed by atomic force microscopy) occurred for the layer thickness bigger than 7 ML. Ferromagnetic properties of the layer with Curie temperature higher than 330 K were detected by SQUID measurements. Electronic structure of the system was investigated in situ by resonant photoemission spectroscopy for MnAs layer thickness of 1, 2, and 8 ML. Density of the valence band states of MnAs and its changes due to the increase in the layer thickness were revealed.

Keywords

EN

68.55.-a; 73.20.At

Discipline

• 73.20.At: Surface states, band structure, electron density of states
• 68.55.-a: Thin film structure and morphology(for methods of thin film deposition, film growth and epitaxy, see 81.15.-z)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2004
• Volume: 105
• Issue: 6
• Pages: 645-650

Dates

published

2004-06

received

2004-05-28

Contributors

author

B. Kowalski

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

author

I. Kowalik

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

author

R. Iwanowski

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

author

E. Łusakowska

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

author

M. Sawicki

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

author

J. Sadowski

• MAX Laboratory, Lund University, PO Box 118, 221 00 Lund, Sweden

author

I. Grzegory

• High Pressure Research Center, Polish Academy of Sciences, Sokolowska 29, 01-141 Warsaw, Poland

author

S. Porowski

• High Pressure Research Center, Polish Academy of Sciences, Sokolowska 29, 01-141 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.105.645