Title of Paper:EFFECTS OF THE MIXED Cu/O LAYER ON THE TRANSPORT PROPERTIES OF Cu/EuO-BASED TUNNEL JUNCTIONS

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Affiliation of Author(s):理学院

Journal:SURFACE REVIEW AND LETTERS

Key Words:Cu/EuO/Cu tunneling junction Cu oxidation spin filter first-principle calculation

Abstract:The spin-dependent transport properties of Cu/EuO-based tunnel junctions are investigated by means of the first-principle calculations combined with the non-equilibrium Green's function (NEGF) method. It is found that the Cu/EuO-based junctions exhibit excellent spin-filtering effect. Furthermore, the mixed Cu/O layer enhances the tunneling of the majority spin through the EuO barrier for the junctions with Cu/O layers due to the fact that the valance-band maximum of the Eu-4f states shifts to high energies with respect to the Fermi level for these junctions. These results permit the existence of the mixed Cu/O layer in Cu/EuO-based tunnel junctions and promote future applications of these tunnel junctions in spintronic devices.

ISSN No.:0218-625X

Translation or Not:no

Date of Publication:2017-12-01

Co-author:Dai, C. J.,dxy,Yuan, J. R.,Bi, M. X.,Liu, J. S.

Correspondence Author:yanxiaohong