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Optically Activated Superconductivity in MgB2 via Electroluminescent GaP Inhomogeneous Phase
Yao Qi1, Duo Chen1, Qingyu Hai1
1Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China.
Materials (Basel, Switzerland)
|April 14, 2026
Summary
Incorporating electroluminescent gallium phosphide (GaP) phases into magnesium diboride (MgB2) enhances its superconducting properties. This method boosts critical temperature and current density, offering a new way to tune superconductors.
Area of Science:
- Condensed Matter Physics
- Materials Science
Background:
- Magnesium diboride (MgB2) is a superconductor with potential applications.
- Tuning superconducting properties is crucial for technological advancement.
Purpose of the Study:
- Investigate the effect of electroluminescent gallium phosphide (GaP) inhomogeneous phases on MgB2 properties.
- Explore strategies for enhancing superconducting transition temperature (Tc) and critical current density (Jc).
Main Methods:
- Incorporation of GaP electroluminescent inhomogeneous phases into MgB2.
- Systematic investigation of structural, electrical, and magnetic properties.
- Raman spectroscopy to analyze phonon modes and electron-phonon coupling.
Main Results:
- Superconducting transition temperature (Tc) increased by up to 1.4 K with increasing GaP emission intensity.
- Critical current density (Jc) increased by ~69% and irreversibility field (Hirr) by ~31.5%.
- Observed correlation between Tc, electron-phonon coupling (λ), and GaP emission intensity.
Conclusions:
- Electroluminescent inhomogeneous phases offer a novel method for tuning MgB2 superconductivity.
- Luminescence-activated states likely play a role in modulating superconducting response.
- Synergistic regulation of superconductors through inhomogeneous phases and excited states is feasible.
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