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.
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. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 74:10(2006), pp. 104421.1-104421.5. [10.1103/PhysRevB.74.104421]
Influence of surface treatment on the magnetic properties of Gax Mn1-x As thin films
G. Rossi;
2006
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.
| File | Dimensione | Formato | |
|---|---|---|---|
|
PRB74,104421(2006).pdf
accesso aperto
Descrizione: articolo pubblicato
Tipologia:
Publisher's version/PDF
Dimensione
310.3 kB
Formato
Adobe PDF
|
310.3 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
