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arXiv 0810.5093cond-mat.supr-concond-mat.str-el
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声子谱中超导能隙的直接观测

Direct observation of the superconducting gap in phonon spectra

F. Weber, A. Kreyssig, L. Pintschovius, R. Heid, W. Reichardt, D. Reznik, O. Stockert, K. Hradil

摘要:

我们证明了超导能隙$Δ$可以直接在声子谱中观察到,正如最近的理论所预测的那样。此外,由于每个声子只探测费米表面的一小部分上的间隙,所以可以详细地研究间隙的各向异性。我们对各向异性常规超导体YNi $_2$ B $_2$ C的中子散射研究证明了声子谱的这种新应用。

英文摘要:

We show that the superconducting energy gap $Δ$ can be directly observed in phonon spectra, as predicted by recent theories. In addition, since each phonon probes the gap on only a small part of the Fermi surface, the gap anisotropy can be studied in detail. Our neutron scattering investigation of the anisotropic conventional superconductor YNi$_2$B$_2$C demonstrates this new application of phonon spectroscopy.

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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