Antiferromagnetic interlayer exchange coupling in ferromagnetic GaMnAs/GaAs:Be multilayers

H. Lee, S. Lee, S. Choi, S. Lee, X. Liu, J. K. Furdyna

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The interlayer exchange coupling (IEC) in magnetic multilayers determines the spin orientation of individual magnetic layers comprising the system. The dependence of the resistance on the resulting spin configuration in turn leads to the phenomenon known as giant magnetoresistance (GMR). [1] The GMR effect is of key importance to the area of spintronics, in which the spin degree of freedom is utilized in the operation of electronic devices. The behavior of IEC in metallic ferromagnetic multilayers has been extensively investigated, and the ability to control the IEC by structural parameters to be either ferromagnetic (FM) or antiferromagnetic (AFM) is now well established. In contrast, in multilayers consisting of FM semiconductors such as GaMnAs, the ability to change the IEC from FM to AFM is not well understood. Recently, however, AMF IEC was observed in GaMnAs/GaAs:Be multilayers [1]. These systems, however, show somewhat different behavior from their metallic counterparts. Specifically, the IEC in the GaMnAs/GaAs:Be multilayer system is observed to be long range, typically of over 10 nm, so that not only interactions between nearest neighbor (NN) layers of the multilayer, but also between next-nearest-neighbor (NNN) layers are involved during the magnetization reversal process. [2].

    Original languageEnglish
    Title of host publication2015 IEEE International Magnetics Conference, INTERMAG 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781479973224
    DOIs
    Publication statusPublished - 2015 Jul 14
    Event2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China
    Duration: 2015 May 112015 May 15

    Publication series

    Name2015 IEEE International Magnetics Conference, INTERMAG 2015

    Other

    Other2015 IEEE International Magnetics Conference, INTERMAG 2015
    Country/TerritoryChina
    CityBeijing
    Period15/5/1115/5/15

    Bibliographical note

    Publisher Copyright:
    © 2015 IEEE.

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering
    • Surfaces, Coatings and Films

    Fingerprint

    Dive into the research topics of 'Antiferromagnetic interlayer exchange coupling in ferromagnetic GaMnAs/GaAs:Be multilayers'. Together they form a unique fingerprint.

    Cite this