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    Magneto-transport Mechanism of Individual Nanostructures via Direct Magnetoresistance Measurement in situ SEM

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    Megnato_am-2020-09773v_Proof_hi.pdf
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    Accepted article
    Embargo End Date:
    2021-08-05
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    Type
    Article
    Authors
    Zhang, Junwei
    Peng, Yong
    Ma, Hongbin
    Zhang, Senfu cc
    Hu, Yang
    Zeng, Xue
    Deng, Xia
    Guan, Chaoshuai
    Chen, Rongrong
    Hu, Yue
    Karim, Abdul
    Tao, Kun
    Zhang, Mingjie
    Zhang, Xixiang cc
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Material Science and Engineering Program
    Date
    2020-08-05
    Online Publication Date
    2020-08-05
    Print Publication Date
    2020-09-02
    Embargo End Date
    2021-08-05
    Permanent link to this record
    http://hdl.handle.net/10754/664512
    
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    Abstract
    The accurate magnetoresistance (MR) measurement of individual nanostructures is essential and important for either the enrichment of fundamental knowledge of magneto-transport mechanism or the facilitation of desired design of magnetic nanostructures for various technological applications. Herein, we report a deep investigation on the magneto-transport mechanism of single CoCu/Cu multilayered nanowire via direct magnetoresistance measurement by using our invented magnetotransport instrument in-situ scanning electron microscope (SEM). Off-axis electron holography experiments united with micromagnetic simulation prove that the CoCu layers in CoCu/Cu multilayered nanowires are formed a single-domain structure, in which the alignment of magnetic moments is mainly determined by shape anisotropy. The MR of the single CoCu/Cu multilayered nanowire is measured to be only 1.14% when the varied external field is applied along nanowire length axis, which matches with the theoretical prediction of Granular Films model. Density functional theory (DFT) calculations further disclose that spin-dependent scattering at the interface between magnetic and nonmagnetic layers is responsible for the intrinsic magnetotransport mechanism
    Citation
    Zhang, J., Peng, Y., Ma, H., Zhang, S., Hu, Y., Zeng, X., … Zhang, X. (2020). Magneto-transport Mechanism of Individual Nanostructures via Direct Magnetoresistance Measurement in situ SEM. ACS Applied Materials & Interfaces. doi:10.1021/acsami.0c09773
    Sponsors
    This work was supported by National Natural Science Foundation of China (51771085, 51801087, 91962212 and 51571104), the Fundamental Research Funds for the Central Universities (lzujbky-2020-58).
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Applied Materials & Interfaces
    DOI
    10.1021/acsami.0c09773
    Additional Links
    https://pubs.acs.org/doi/10.1021/acsami.0c09773
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsami.0c09773
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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