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    Superconductivity and High-Pressure Performance of 2D Mo2C Crystals

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    Name:
    Revised Manuscript with Highlight-20210208-final (1).pdf
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    685.1Kb
    Format:
    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Zhang, Junli cc
    Cao, Zhen
    He, Xin cc
    Liu, Wenhao
    Wen, Yan cc
    Cavallo, Luigi cc
    Ren, Wencai cc
    Cheng, Huiming cc
    Zhang, Xixiang cc
    KAUST Department
    Biological and Environmental Science and Engineering (BESE) Division
    Chemical Science Program
    KAUST Catalysis Center (KCC)
    Material Science and Engineering
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2021-02-26
    Online Publication Date
    2021-02-26
    Print Publication Date
    2021-03-11
    Embargo End Date
    2022-02-26
    Submitted Date
    2021-01-08
    Permanent link to this record
    http://hdl.handle.net/10754/667683
    
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    Abstract
    Two-dimensional (2D) materials have attracted significant attention for their ability to support novel magneto-electrical transport and their optical and magnetic properties, of which their superconductivity is particularly of interest. Here we report on the behavior of superconductivity in 2D Mo2C crystals when hydrostatic pressure is applied, which has not yet been described in the literature. We found that the localization of boundary atoms disorder-induced Cooper pairs can suppress the superconducting transition temperature (Tc) as effectively as a magnetic field and current. We observed that the Tc initially decreased as the pressure increased to 1.75 GPa but then began to increase as the pressure increased further to 2.5 GPa. Our density functional theory calculations revealed that this behavior was linked to the modulation of the strength of the electron-phonon coupling and the electron property, which was triggered by compression of the lattice under high pressure. We attributed the inflection point in the hydrostatic pressure-dependent Tc curve to the structural phase transition of Mo2C from a hexagonal to an orthorhombic structure. This work presents a new avenue for the study of the superconductivity of Mo2C, which can be extended to apply to other 2D superconductors to modulate their electronic states.
    Citation
    Zhang, J., Cao, Z., He, X., Liu, W., Wen, Y., Cavallo, L., … Zhang, X. (2021). Superconductivity and High-Pressure Performance of 2D Mo2C Crystals. The Journal of Physical Chemistry Letters, 2219–2225. doi:10.1021/acs.jpclett.1c00071
    Publisher
    American Chemical Society (ACS)
    Journal
    The Journal of Physical Chemistry Letters
    DOI
    10.1021/acs.jpclett.1c00071
    PubMed ID
    33635673
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.jpclett.1c00071
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.jpclett.1c00071
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Physical Science and Engineering (PSE) Division; Chemical Science Program; Material Science and Engineering Program; KAUST Catalysis Center (KCC)

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