Charge Transport Properties of the Majorana Zero Mode Induced Noncollinear Spin Selective Andreev Reflection**Supported by the National Natural Science Foundation of China under Grant Nos 11674028, 61774017, 11734004 and 21421003, and the National Key Research and Development Program of China under Grant No 2017YFA0303300.

Abstract

We study the charge transport properties of the spin-selective Andreev reflection (SSAR) effect between a spin polarized scanning tunneling microscope (STM) tip and a Majorana zero mode (MZM). Considering both the MZM and the excited states, we calculate the conductance and the shot noise power of the noncollinear SSAR using scattering theory. We find that the excited states give rise to inside peaks. Moreover, we numerically calculate the shot noise power and the Fano factor of the SSAR effect. Our calculation shows that the shot noise power and the Fano factor are related to the angle between the spin polarization direction of the STM tip and that of the MZM, which provide additional characteristics to detect the MZM via SSAR.