arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2009.05058cond-mat.supr-concond-mat.str-el
收藏

Bi基铜氧化物中节相干谱权的普遍抑制

Ubiquitous suppression of the nodal coherent spectral weight in Bi-based cuprates

M. Zonno, F. Boschini, E. Razzoli, M. Michiardi, M. X. Na, S. Dufresne, T. M. Pedersen, S. Gorovikov, S. Gonzalez, G. Di Santo, L. Petaccia, M. Schneider, D. Wo… 展开作者

M. Zonno, F. Boschini, E. Razzoli, M. Michiardi, M. X. Na, S. Dufresne, T. M. Pedersen, S. Gorovikov, S. Gonzalez, G. Di Santo, L. Petaccia, M. Schneider, D. Wong, P. Dosanjh, Y. Yoshida, H. Eisaki, R. D. Zhong, J. Schneeloch, G. D. Gu, A. K. Mills, S. Zhdanovich, G. Levy, D. J. Jones, A. Damascelli

摘要:

高温超导铜氧化物的低能元激发表现出一种有趣的现象。特别是,一个非常规的温度依赖性的相干光谱权重(CSW)已被观察到在超导相的角分辨光电子能谱(ARPES),无论是在波腹的d波配对间隙是最大的,以及沿无间隙的节点方向。在这里,我们结合平衡和时间分辨的ARPES跟踪的温度依赖的熔化的节点CSW在Bi基铜酸盐前所未有的灵敏度。我们发现CSW的节点抑制温度升高时是无处不在的单层和双层铋铜酸盐,超导和赝能隙起始温度无关。我们定量模型的节点的光谱特征和CSW的异常抑制的费米液体框架内的线形,建立正常态电动力学在超导铜氧化物中的节点准粒子的描述中发挥的关键作用。

英文摘要:

High-temperature superconducting cuprates exhibit an intriguing phenomenology for the low-energy elementary excitations. In particular, an unconventional temperature dependence of the coherent spectral weight (CSW) has been observed in the superconducting phase by angle-resolved photoemission spectroscopy (ARPES), both at the antinode where the d-wave paring gap is maximum, as well as along the gapless nodal direction. Here, we combine equilibrium and time-resolved ARPES to track the temperature dependent meltdown of the nodal CSW in Bi-based cuprates with unprecedented sensitivity. We find the nodal suppression of CSW upon increasing temperature to be ubiquitous across single- and double-layer Bi cuprates, and uncorrelated to superconducting and pseudogap onset temperatures. We quantitatively model both the lineshape of the nodal spectral features and the anomalous suppression of CSW within the Fermi-Liquid framework, establishing the key role played by the normal state electrodynamics in the description of nodal quasiparticles in superconducting 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。

↑