Charge stripes have been widely observed in many different types of unconventional superconductors, holding varying periods ( ) and intensities. However, a general understanding on the interplay between charge stripes and superconducting properties is still incomplete. Here, using large-scale unbiased numerical simulations on a general inhomogeneous Hubbard model, we discover that the charge-stripe period , which is variable in different real material systems, could dictate the pairing symmetries-d wave for and d waves for . In the latter, tuning hole doping and charge-stripe amplitude can trigger a d-s wave transition and magnetic-correlation shift, where the d-wave state converts to a pairing-density wave state, competing with the s wave. These interesting phenomena arise from an unusual stripe-induced selection rule of pairing symmetries around on-stripe region and within inter-stripe region, giving rise to a critical point of for the phase transition. In general, our findings offer important insights into the differences in the superconducting pairing mechanisms across many -dependent superconducting systems, highlighting the decisive role of charge stripe.
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| http://dx.doi.org/10.1038/s41467-024-53841-x | DOI Listing |
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