Kazan Physical-Technical Institute, Russian Academy of Sciences, 10/7 Sibirsky Tract, 420029 Kazan, Russia.
J Phys Condens Matter. 2010 May 12;22(18):185703. doi: 10.1088/0953-8984/22/18/185703. Epub 2010 Apr 20.
The influence of the spin-dependent phase shifts (SDPSs) associated with the electronic reflection and transmission amplitudes acquired by electrons upon scattering at the potential barrier on the Andreev reflection probability of electron and hole excitations for a ferromagnet/isolator/d-wave superconductor (FIS) contact and on the charge conductance of the FIS contact is studied. Various superconductor orientations are considered. It has been found that for strong ferromagnets and ultrathin interface potential for the {110} oriented d-wave superconductor the presence of the SDPS can lead to the appearance of finite-voltage peaks in the charge conductance of the F/I/d-wave superconductor contact. On the contrary, for the {100} orientation of the d-wave superconductor the presence of the SDPS can lead to restoration of the zero-voltage peak and suppression of finite-voltage peaks. The spin-dependent amplitudes of the Andreev reflection probability and energy levels of the spin-dependent Andreev bound states are found.
研究了在铁磁体/绝缘体/d 波超导体（FIS）接触中，电子在势垒处散射时获得的电子反射和透射振幅相关的自旋相关相移（SDPS）对电子和空穴激发的安德烈夫反射概率以及 FIS 接触的电荷电导的影响。考虑了各种超导体取向。结果发现，对于强铁磁体和超薄界面势，对于 {110} 取向的 d 波超导体，SDPS 的存在会导致 F/I/d 波超导体接触的电荷电导中出现有限电压峰。相反，对于 d 波超导体的 {100} 取向，SDPS 的存在会导致零电压峰的恢复和有限电压峰的抑制。还发现了自旋相关安德烈夫反射概率和自旋相关安德烈夫束缚态能级的自旋相关幅度。
