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Spin collective mode and quasiparticle contributions to STM spectra of d-wave superconductors with pinning

机译:带钉扎的自旋集体模态和准粒子对d波超导体STM光谱的贡献

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摘要

We present additional details of the scanning tunneling microscopy spectra predicted by the model of pinning of dynamic spin collective modes in d-wave superconductor proposed by Polkovnikov et al. [Phys. Rev. B 65 (2002) 220509]. Along with modulations at the twice the wavevector of the spin collective mode, the local density of states (LDOS) displays features linked to the spectrum of the Bogoliubov quasiparticles. The former is expected to depend more strongly on an applied magnetic field or the doping concentration. The spin collective mode and the quasiparticles are distinct, co-existing, low energy excitations of the d-wave superconductor (strongly coupled only in some sectors of the Brillouin zone), and should not be viewed as mutually exclusive sources of LDOS modulation. (C) 2003 Elsevier Science B.V. All rights reserved. [References: 36]
机译:我们将介绍由Polkovnikov等人提出的d波超导体中的动态自旋集体模式的钉扎模型预测的扫描隧道显微镜光谱的其他详细信息。 [物理版本B 65(2002)220509]。除了自旋集体模式的波矢两倍的调制外,状态的局部密度(LDOS)还显示与Bogoliubov准粒子的光谱有关的特征。预期前者将更强烈地依赖于所施加的磁场或掺杂浓度。自旋集体模式和准粒子是d波超导体(仅在布里渊区的某些区域中强烈耦合)的独特的,共存的,低能激发,因此不应将其视为LDOS调制的互斥源。 (C)2003 Elsevier Science B.V.保留所有权利。 [参考:36]

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