  Improving the critical temperature (TC), critical magnetic field (HC), and
critical current (JC) of superconducting materials has always been one of the
most significant challenges in the field of superconductivity, but progress has
been slow over the years. Based on the concept of injecting energy to enhance
electron pairing states, in this study, we have employed a solid-state
sintering method to fabricate a series of smart meta-superconductors (SMSCs)
consisting of p-n junction nanostructures with a wavelength of 550 nm, doped
within an MgB2 matrix. Experimental results demonstrate that compared to pure
MgB2 samples, the critical transition temperature (TC) has increased by 1.2 K,
the critical current (JC) has increased by 52.8%, and the Meissner effect (HC)
shows significant improvement in its diamagnetic properties. This phenomenon of
enhanced superconducting performance can be explained by the coupling between
superconducting electrons and evanescent waves.
