Use of voltage pulses to detect spin-polarized tunneling

作者：Yamada TK^*; Bischoff MMJ; Mizoguchi T; van Kempen H

来源：Applied Physics Letters, 2003, 82(9): 1437-1439.

DOI：10.1063/1.1556958

The present letter describes a method to make a spin-polarized scanning tunneling microscopy tip by applying voltage pulses between a W tip and a magnetic sample. This spin-polarized tip has the similar characteristics as an Fe-coated W tip, which was confirmed by observations of antiferromagnetically coupled ferromagnetic Mn(001) layers (>3 ML) grown on an Fe(001) whisker at 370 K. Furthermore, we demonstrate that these voltage pulses can vary the tip magnetization direction.

• 出版日期2003-3-3