Details

Autor(en) / Beteiligte

• Cubukcu, M
• von Bardeleben, HJ
• Cantin, J L
• Vickridge, I
• Lemaitre, A

Titel

Ferromagnetism in Ga0.90Mn0.10As1<ce:hsp sp="0.12"/>-<ce:hsp sp="0.12"/>yPy: From the metallic to the impurity band conduction regime

Ist Teil von

• Thin solid films, 2011-09, Vol.519 (23), p.8212-8214

Erscheinungsjahr

2011

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The magnetic properties of low temperature MBE grown Ga0.90Mn0.10As1-yPy films with 0<y<0.20 have been studied as a function of the phosphorous content. The films are ferromagnetic for all phosphorous compositions. For y<0.15 the conductivity type is metallic but above y>0.15 it changes to impurity band conduction (IBC). In the IBC regime the main magnetic properties are profoundly modified: the saturation magnetization decreases from typically 50emu/cm3 to 35emu/cm3, the critical temperature drops sharply from 130K to 45K and the uniaxial magnetic anisotropy spectroscopy is strongly reduced.