Energy dependence of the probability for Andreev reflection
Tsoi V. S. ,Yakovlev S. E.
An experiment has been carried out to directly observe the dependence of the Andreev reflection probability qA on the excitation energy e in the case of normal incidence on an n-s interface by means of transverse electron focusing {V. S. Tsoi, Pis'maZh. Eksp. Teor. Fiz. 19,114 (1974) [JETP Lett. 19,70 (1974) ]}.