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arXiv 0802.3936cond-mat.supr-con
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d波超导体中准粒子干涉的磁场演化

Magnetic field evolution of the quasiparticle interference in a d-wave superconductor

T. Pereg-Barnea, M. Franz

摘要:

在弱无序d波超导体中的准粒子干涉在用扫描隧道谱测量的傅立叶变换局域态密度中产生了独特的峰。我们预测,这些峰值的幅度可以通过施加磁场根据超导序参量的对称性所支配的一个非常特定的模式增强或抑制。这种计算模式与最近的实验测量结果一致,并表明该技术可能有助于探测高场下的基本正常态。

英文摘要:

Quasiparticle interference in a d-wave superconductor with weak disorder produces distinctive peaks in the Fourier-transformed local density of states measured by scanning tunneling spectroscopy. We predict that amplitudes of these peaks can be enhanced or suppressed by applied magnetic field according to a very specific pattern governed by the symmetry of the superconducting order parameter. This calculated pattern agrees with the recent experimental measurement and suggests that the technique could be useful for probing the underlying normal state at high fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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