ANTIFERROMAGNETICALLY INDUCED PHOTOEMISSION BAND IN THE CUPRATES

被引:69
作者
HAAS, S [1 ]
MOREO, A [1 ]
DAGOTTO, E [1 ]
机构
[1] FLORIDA STATE UNIV,SUPERCOMP COMPUTAT RES INST,TALLAHASSEE,FL 32306
关键词
D O I
10.1103/PhysRevLett.74.4281
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Strong antiferromagnetic correlations in models of high critical temperature (high- Tc) cuprates produce quasiparticlelike features in photoemission (PES) calculations above the Fermi momentum pF corresponding to weakly interacting electrons. This effect, discussed before by Kampf and Schrieffer [Phys. Rev. B 41, 6399 (1990)], is analyzed here using computational techniques in strong coupling. It is concluded that weight above pF should be observable in PES data for underdoped compounds, while in the overdoped regime it will be hidden in the experimental background. At optimal doping the signal is weak. The order of magnitude of our results is compatible with experimental data by Aebi et al. [Phys. Rev. Lett. 72, 2757 (1994)] for Bi2Sr2CaCu2O8. © 1995 The American Physical Society.
引用
收藏
页码:4281 / 4284
页数:4
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