期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 19, 页码 4370-4373出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.4370
关键词
-
With significantly improved sample quality and instrumental resolution, we clearly identify in the (pi, 0) photoemission spectra from YBa2Cu3O6.993, in the superconducting state, the long-sought peak- dip-hump structure. This advance allows us to investigate the large a-b anisotropy of the in-plane electronic structure including. in particular, a 50% difference in the magnitude of the superconducting gap that scales with the energy position of the hump feature. This anisotropy, likely induced by the presence of the CuO chains, raises serious questions about attempts to quantitatively explain the YBa2Cu3O7-delta data from various experiments using models based on a perfectly square lattice.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据