Recently discovered superconducting infinite-layer nickelates RNiO₂ (R=Nd, La, Pr) attracts increasing attention as a similar system to cuprates. Both RNiO₂ and YBCO cuprates display the three-dimensional (3D) CDW with wave vector q∼(2π/3,0,q_z), while q_z is nonzero and incommensurate in the former system. Here, we reveal that the characteristic CDW in RNiO₂ can be explained as the quantum interference between paramagnons, by focusing on the following characteristics of RNiO₂: (i) prominent three dimensionality in the Fermi surface and (ii) large self-hole doping (∼14%). This mechanism predicts the emergence of the d_x²-y²-wave bond order at a secondary 3D nesting vector q^c∼(2π/3,0,q^c_z)(q^c_z=0.2π∼2π/3). The obtained strong bond fluctuations lead to the non-Fermi liquid electronic states and superconducting states in nickelates.

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