Induced spin texture in semiconductor/topological insulator   heterostructures
  We show that a semiconductor thin film can acquire a non-trivial spin texture due to the proximity effect induced by a topological insulator. The effect stems from coupling to the topological surface states and is present even when the insulator is doped. We propose a semiconductor/topological insulator heterostructure as a device that allows measuring interface properties and probing surface states in uncompensated samples. We also find that the topological insulator surface modes can be significantly broadened and shifted by the presence of metallic contacts. 
Jimmy A. Hutasoit and Tudor D. Stanescu
cond-mat.mes-hall cond-mat.mtrl-sci