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首页> 外文期刊>Physical review. B, Condensed Matter And Materials Physics >Incompatibility of modulated checkerboard patterns with the neutron scattering resonance peak in cuprate superconductors
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Incompatibility of modulated checkerboard patterns with the neutron scattering resonance peak in cuprate superconductors

机译:铜酸盐超导体中调制棋盘格与中子散射共振峰的不相容性

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Checkerboard patterns have been proposed to explain the real space structure observed in scanning tunneling microscopy experiments on BSCCO and Na-CCOC. However, simple checkerboard patterns have low energy incommsensurate (IC) spin peaks rotated 45° from the direction of the charge IC peaks, contrary to what is seen in neutron scattering. Here, we study modulated checkerboard patterns which can resolve the low frequency inconsistency. Using spin-wave theory, we explore the spin response of these superstructures and find that the high energy response is inconsistent with neutron scattering results. In particular, the modulated checkerboard structures are incapable of supporting the experimentally well-established resonance peak at (π, π).
机译:已经提出了棋盘图案来解释在BSCCO和Na-CCOC的扫描隧道显微镜实验中观察到的真实空间结构。然而,与中子散射相反,简单的棋盘图案具有从电荷IC峰的方向旋转45°的低能量不对称(IC)自旋峰。在这里,我们研究可解决低频不一致问题的调制棋盘格图案。利用自旋波理论,我们探索了这些超结构的自旋响应,并发现高能响应与中子散射结果不一致。特别地,经调制的棋盘结构不能支持在(π,π)处的实验上建立好的共振峰。

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