CHARGE AND SPIN DYNAMICS IN A DOPED QUANTUM ANTIFERROMAGNET

被引：18

作者：

HASEGAWA, Y ^{[1
]}

POILBLANC, D ^{[1
]}

机构：

[1] SWISS FED INST TECHNOL,CH-8093 ZURICH,SWITZERLAND

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.41.9555

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a calculation of the dynamics of more than one hole in the t-J model using the Lanczos algorithm. The hole spectral weight develops a large quasiparticle peak that describes two holes in the same momentum state on the pseudo-Fermi-surface with antiparallel spins. We also show that doping leads to a narrowing of the bandwidth of the spin-wave dispersion. A larger number of higher-energy subpeaks in the spectral function (compared to half filling) are observed, although they are not predicted by mean-field theory. © 1990 The American Physical Society.

引用

页码：9555 / 9558

页数：4

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