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arXiv 0905.2431cond-mat.supr-con
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费米弧的量子振荡

Quantum oscillations from Fermi arcs

T. Pereg-Barnea, H. Weber, G. Refael, M. Franz

摘要:

当金属受到强磁场B的作用时,几乎所有的可测量都表现出以1/B为周期的振荡。这样的量子振荡代表了金属的定义方面,其费米面(FS)的正则探针。在这项研究中,我们建立了一个新的机制,量子振荡,只需要有限段的FS存在。如果FS段由配对间隙终止,则1/B中的周期性振荡发生。我们的研究结果调和最近的突破性实验表明量子振荡的铜酸盐超导体YBCO,与一个公认的结果,许多角度分辨光电发射(ARPES)的研究,一致表明“费米弧”-截断段的费米表面-在正常状态的铜酸盐。

英文摘要:

When a metal is subjected to strong magnetic field B nearly all measurable quantities exhibit oscillations periodic in 1/B. Such quantum oscillations represent a canonical probe of the defining aspect of a metal, its Fermi surface (FS). In this study we establish a new mechanism for quantum oscillations which requires only finite segments of a FS to exist. Oscillations periodic in 1/B occur if the FS segments are terminated by a pairing gap. Our results reconcile the recent breakthrough experiments showing quantum oscillations in a cuprate superconductor YBCO, with a well-established result of many angle resolved photoemission (ARPES) studies which consistently indicate "Fermi arcs" -- truncated segments of a Fermi surface -- in the normal state of the cuprates.

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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