text: which may further disrupt the interface order. The ori- 
  gin of the interface magnetism then had to be inferred by 
  comparison to a series of reference samples7. Demonstra- 
  tion of coupling between the bulk of the layers, i.e., an 
  exchange bias eﬀect, would provide direct evidence of the 
  interface magnetic order. Moreover, such coupling would 
  oﬀer new means of manipulating the FM semiconductor 
  spin state and utilizing the proximity polarization eﬀect 
  in a spintronic device. 