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This research aims to investigate the synergistic effect between chargedensity wave, selective electron-phonon coupling under antiferromagneticfluctuations, as well as the unusual electron distribution observed in ARPESdata in YBa2Cu3Ox superconductors (YBCO). By considering their synergisticimpact, our model can calculate the superconducting transition temperature Tcof YBa2Cu3Ox as a function of pressure for x = 6.5 and 7 at a reasonable level.Moreover, we have identified a specific antiferromagnetic phonon thatcontributes significantly to the high Tc observed in YBCO. This findinghighlights the significance of these effects in achieving high Tc values. Ourstudy not only identifies an imbalanced charge-density wave effect fortriggering selective electron-phonon coupling but also explains why the chargedensity wave usually occurs around the magnetic copper atoms. Furthermore, ourresearch reveals limitations in the conventional mean-field ab-initioapproximation used for antiferromagnetic fluctuations in YBCO. It shows thatthe dynamic behavior of electrons in YBCO might not be accurately captured bythis approximation, as non-uniform magnetic fields under antiferromagneticfluctuations induce an additional electric potential on electrons across theboundary between non-magnetic to magnetic sites instantaneously. Thisinstantaneous electric potential, in turn, suggest that the influence of theantiferromagnetic phonon-based pairing mechanism might not have been optimizedin theory

Synergistic interplays between the selective electron-phonon coupling,  antiferromagnetic fluctuations and charge density wave in the YBa2Cu3Ox  cuprate superconductor