text: samples15, the projected Mn 3d magnetic moments are 
  obtained as −1.4 µB and +0.8 µB per ion at remanence 
  and 1000 Oe, respectively. 
  
  monolayers, assuming a uniform distribution of Mn ions 
  and magnetic moments throughout the (Ga,Mn)As ﬁlm. 
  This is around a factor of three thinner than in Ref.7, 
  which could be due to the lower Mn concentration or the 
  diﬀerent preparation method of the present samples. 
  
  The diﬀerence between these values can be understood 
  as being due to an interface layer which is strongly anti- 
  ferromagnetically coupled to the Fe layer. At zero ﬁeld, 
  both the interfacial and bulk Mn are aligned antiparallel 
  to the Fe layer. At high ﬁelds, the bulk of the (Ga,Mn)As 
  layer away from the interface is re-oriented into the exter- 
  nal ﬁeld direction. However, the interfacial Mn remains 
  antiparallel to the Fe layer and thus partially compen- 
  sates the XMCD signal from the bulk of the (Ga,Mn)As. 
  From the size of the remanent and 1000 Oe magnetic 
  moments, it can be estimated that around 25-30% of the 
  TEY XMCD signal can be ascribed to the interfacial Mn 
  which is strongly coupled to the Fe moments. 