Pseudogap ground state in high-temperature superconductors

被引：18
|
作者：
Storey, J. G. [1 ]
Tallon, J. L. [1 ]
Williams, G. V. M. [1 ]
机构：
[1] Ind Res Ltd, MacDiarmid Inst, Lower Hutt, New Zealand
来源：
PHYSICAL REVIEW B | 2008年 / 78卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.78.140506
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
By re-examining recently published photoemission data we demonstrate that the apparent Fermi surface of the pseudogap ground state is a disconnected arc centered on the nodes. This scenario is also consistent with results from Raman spectroscopy and NMR. We also show that it is consistent with doping-dependent entropy data and discuss the origins of this unusual electronic "arc-liquid" state. We show that the pseudogap closes, and the arcs become connected, when the antiferromagnetic (AF) correlation length falls to the size of the lattice parameter. These results are consistent with a picture of Fermi-surface reconstruction due to short-range AF correlations.
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页数：4
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