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Pairing interaction near a nematic quantum critical point of a three-band CuO_2 model

机译:三波段CuO_2模型向列量子临界点附近的配对相互作用

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摘要

Here we calculate the pairing interaction and the k dependence of the gap function associated with the nematic charge fluctuations of a CuO_2 model. We find that the nematic pairing interaction is attractive for small momentum transfer and that it gives rise to d-wave pairing. As the doping p approaches a quantum critical point, the strength of this pairing increases and higher d-wave harmonics contribute to the k dependence of the superconducting gap function, reflecting the longer range nature of the nematic fluctuations.
机译:在这里,我们计算配对相互作用和与CuO_2模型的向列电荷波动相关的间隙函数的k依赖性。我们发现,向列配对相互作用对于小动量传递具有吸引力,并且它引起了d波配对。当掺杂p接近量子临界点时,该配对的强度增加,并且更高的d波谐波有助于超导间隙函数的k依赖性,反映了向列波动的更长范围性质。

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