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首页> 外文会议>Conference on High Temperature Superconductivity Coral Gables, Florida January 7-13 1999 >Fermi surfaces, fermi patches, and fermi arcs in high T_c superconductors
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Fermi surfaces, fermi patches, and fermi arcs in high T_c superconductors

机译：高T_c超导体中的费米表面，费米斑和费米弧

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摘要

A defining property o f metals is the existence of a Fermi surface: for two dimensions, a continuous contour in momentum space which separates occupied from unoccupied states. In this paper, I discuss angle resolved photoemission data on the cuprate superconductor BSCCO and argue that it is not best thought of in this conventional picutre. Rather, the data are consistent with "patches" of finite area connected by more conventional "arcs". Novel physics is associated with the patches, in that the states contained in a patch are dispecsionless and thus interaction dominated. In the pseudogap phase, the patches are gapped out, leaving the Fermi arcs disconnected. This unusual situation may be the key to understanding the microscopic physics of the high temperature superconductors, in that the pairing correlations are strongest in the patches, yet the superfluid density lives only on the arcs.
机译：金属的决定性属性是费米表面的存在：对于二维而言，动量空间中的连续轮廓将占用状态与未占用状态分开。在本文中，我讨论了铜酸盐超导体BSCCO上的角度分辨光发射数据，并认为在这种传统的皮库特中不是最好的想法。而是，数据与由更常规的“弧”连接的有限区域的“斑块”一致。新物理与补丁相关联，因为补丁中包含的状态是无分维的，因此交互作用占主导地位。在伪间隙阶段，将间隙补齐，从而使费米电弧断开。这种不寻常的情况可能是理解高温超导体的微观物理的关键，因为在斑块中配对相关性最强，而超流体密度仅存在于电弧中。

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