Open AccessConductance peak with Zeeman splitting in normal metal-insulator-ferromagnet/superconductor tunnel junctions
Author(s) -
李晓薇
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.2313
Subject(s) - zeeman effect , condensed matter physics , superconductivity , ferromagnetism , conductance , insulator (electricity) , zeeman energy , metal , physics , quantum tunnelling , energy level splitting , materials science , magnetic field , quantum mechanics , optoelectronics , metallurgy
Using Bogoliubov-de Gennes equations, we obtain the self-consistent equation in a ferromagnetic superconductor. Taking into account the rough interface scatteri ng effects, in the framework of the Blonder-Tinkham-Klapwijk modelwe present t he differential conductance of the normal metal-insulator-ferromagnet/supercondu ctor (N/I/FS ) tunnel junctions. It is shown that the exchange energy Eh i n FS can lead to the Zeeman splitting of the conductance peaks;the energy differ ence between the two splitting peaks is equal to 2Eh. The differentia l con ductances in N/I/FS are suppressed by the barrier strength and rough interface s cattering strength.