Abstract
We investigated the non-contact Andreev reflection of the normal-conductor / superconductor junction as a tool for spin polarization measurement of ferromagnetic metals. The conductance due to the Andreev reflection is obtained by numerically solving the corresponding one-dimensional Bogoliubov-de Gennes equation with use of the recursion-transfer-matrix method. We showed that the conductance suppression due to the exchange splitting of conduction band in ferromagnets. We also derived the analytical expression of the zero-bias conductance due to the Andreev reflection through the square barrier which agrees well with the exact numerical values.
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