Influence of surface treatment on the magnetic properties of Gax Mn1-x As thin films

F. Maccherozzi; G. Panaccione; G. Rossi; M. Hochstrasser; M. Sperl; M. Reinwald; G. Woltersdorf; W. Wegscheider; C. H. Back

doi:10.1103/PhysRevB.74.104421

Influence of surface treatment on the magnetic properties of Gax Mn1-x As thin films

F. Maccherozzi
, G. Panaccione
, G. Rossi
, M. Hochstrasser
, M. Sperl
, M. Reinwald
, G. Woltersdorf
, W. Wegscheider
, C. H. Back

AREA Science Park
University of Modena and Reggio Emilia
ETH Zürich
University of Regensburg

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

We present a surface science study on carefully characterized Gax Mn1-x As films grown on GaAs(100), where we investigate the influence on magnetic properties of different surface cleaning procedures. X-ray magnetic circular dichroism reveals a net remnant magnetization along the (100) axis, after chemical etching is performed. The analysis of Mn L2,3 XAS line shapes in different environment indicates that Mn in Gax Mn1-x As behaves as a bulk impurity. By exploiting the different depth sensitivity between x-ray photoemission and x-ray absorption we observe the presence of a Mn depleted layer at the surface after etching.

Original language	English
Article number	104421
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	74
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.74.104421
State	Published - 2006
Externally published	Yes

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title = "Influence of surface treatment on the magnetic properties of Gax Mn1-x As thin films",

abstract = "We present a surface science study on carefully characterized Gax Mn1-x As films grown on GaAs(100), where we investigate the influence on magnetic properties of different surface cleaning procedures. X-ray magnetic circular dichroism reveals a net remnant magnetization along the (100) axis, after chemical etching is performed. The analysis of Mn L2,3 XAS line shapes in different environment indicates that Mn in Gax Mn1-x As behaves as a bulk impurity. By exploiting the different depth sensitivity between x-ray photoemission and x-ray absorption we observe the presence of a Mn depleted layer at the surface after etching.",

author = "F. Maccherozzi and G. Panaccione and G. Rossi and M. Hochstrasser and M. Sperl and M. Reinwald and G. Woltersdorf and W. Wegscheider and Back, \{C. H.\}",

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doi = "10.1103/PhysRevB.74.104421",

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T1 - Influence of surface treatment on the magnetic properties of Gax Mn1-x As thin films

AU - Maccherozzi, F.

AU - Panaccione, G.

AU - Rossi, G.

AU - Hochstrasser, M.

AU - Sperl, M.

AU - Reinwald, M.

AU - Woltersdorf, G.

AU - Wegscheider, W.

AU - Back, C. H.

PY - 2006

Y1 - 2006

N2 - We present a surface science study on carefully characterized Gax Mn1-x As films grown on GaAs(100), where we investigate the influence on magnetic properties of different surface cleaning procedures. X-ray magnetic circular dichroism reveals a net remnant magnetization along the (100) axis, after chemical etching is performed. The analysis of Mn L2,3 XAS line shapes in different environment indicates that Mn in Gax Mn1-x As behaves as a bulk impurity. By exploiting the different depth sensitivity between x-ray photoemission and x-ray absorption we observe the presence of a Mn depleted layer at the surface after etching.

AB - We present a surface science study on carefully characterized Gax Mn1-x As films grown on GaAs(100), where we investigate the influence on magnetic properties of different surface cleaning procedures. X-ray magnetic circular dichroism reveals a net remnant magnetization along the (100) axis, after chemical etching is performed. The analysis of Mn L2,3 XAS line shapes in different environment indicates that Mn in Gax Mn1-x As behaves as a bulk impurity. By exploiting the different depth sensitivity between x-ray photoemission and x-ray absorption we observe the presence of a Mn depleted layer at the surface after etching.

UR - https://www.scopus.com/pages/publications/33749344698

U2 - 10.1103/PhysRevB.74.104421

DO - 10.1103/PhysRevB.74.104421

M3 - Article

AN - SCOPUS:33749344698

SN - 1098-0121

VL - 74

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 10

M1 - 104421

ER -

Influence of surface treatment on the magnetic properties of Gax Mn1-x As thin films

Abstract

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