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    Enhancement of critical current density in a superconducting NbSe2 step junction.

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    Type
    Article
    Authors
    He, Xin cc
    Wen, Yan cc
    Zhang, Chenhui cc
    Lai, Zhiping cc
    Chudnovsky, Eugene M
    Zhang, Xixiang cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Engineering Program
    Material Science and Engineering
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    KAUST Grant Number
    OSR-2016-CRG5-2977
    URF/1/3435
    Date
    2020
    Embargo End Date
    2021-06-02
    Submitted Date
    2020-05-20
    Permanent link to this record
    http://hdl.handle.net/10754/662980
    
    Metadata
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    Abstract
    We investigate the transport properties of a NbSe2 nanodevice consisting of a thin region, a thick region and a step junction. The superconducting critical current density of each region of the nanodevice has been studied as a function of temperature and magnetic field. We find that the critical current density has similar values for both the thin and thick regions away from the junction, while the critical current density of the thin region of the junction increases to approximately 1.8 times as compared with the values obtained for the other regions. We attribute such an enhancement of critical current density to the vortex pinning at the surface step. Our study verifies the enhancement of the critical current density by the geometrical-type pinning and sheds light on the application of 2D superconductors.
    Citation
    He, X., Wen, Y., Zhang, C., Lai, Z., Chudnovsky, E. M., & Zhang, X. (2020). Enhancement of critical current density in a superconducting NbSe2 step junction. Nanoscale. doi:10.1039/d0nr03902k
    Sponsors
    This publication is based on research supported by the King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) under the Award No. URF/1/3435-01-01 and OSR-2016-CRG5-2977.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Nanoscale
    DOI
    10.1039/d0nr03902k
    PubMed ID
    32478360
    Additional Links
    http://xlink.rsc.org/?DOI=D0NR03902K
    ae974a485f413a2113503eed53cd6c53
    10.1039/d0nr03902k
    Scopus Count
    Collections
    Articles; Advanced Membranes and Porous Materials Research Center; Physical Science and Engineering (PSE) Division; Chemical Engineering Program; Material Science and Engineering Program

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