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arXiv 1202.6370cond-mat.supr-con
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低Tc Bi-2201铜氧化物的超导尺度和赝能隙尺度的差异

Disparity of superconducting and pseudogap scales in low-Tc Bi-2201 cuprates

Th. Jacobs, S. O. Katterwe, H. Motzkau, A. Rydh, A. Maljuk, T. Helm, C. Putzke, E. Kampert, M. V. Kartsovnik, V. M. Krasnov

摘要:

实验研究了低超导临界温度Tc < 4 K的单层铜氧化物Bi(2+x)Sr(2-y)CuO(6+delta)的输运和本征隧穿特性。观察到超导能量、临界场和涨落温度范围随Tc的减小而减小,而相应的赝能隙特性与Tc高20 ~ 30倍的高Tc铜氧化物具有相同的数量级。观察到的超导和赝能隙尺度的差异清楚地揭示了它们的不同起源。

英文摘要:

We experimentally study transport and intrinsic tunneling characteristics of a single-layer cuprate Bi(2+x)Sr(2-y)CuO(6+delta) with a low superconducting critical temperature Tc < 4 K. It is observed that the superconducting energy, critical field and fluctuation temperature range are scaling down with Tc, while the corresponding pseudogap characteristics have the same order of magnitude as for high-Tc cuprates with 20 to 30 times higher Tc. The observed disparity of the superconducting and pseudogap scales clearly reveals their different origins.

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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