ANTIFERROMAGNETISM IN ELECTRON-DOPED AND HOLE-DOPED HIGH-T(C) SUPERCONDUCTORS

被引：15

作者：

ZHANG, WY

BENNEMANN, KH

机构：

[1] Institute of Theoretical Physics, Freie Universität Berlin, D-1000 Berlin 33

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.45.12487

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dependence of antiferromagnetism on electron and hole doping is studied. We explain the experimentally observed different critical doping concentration for the destruction of antiferromagnetism. We obtain only for hole-doped systems a paramagnetic phase with local moments. Furthermore, we show that the effective mass in the hole-doped system is lighter than that in electron-doped system at large doping. These results are derived from an effective one-band Hubbard Hamiltonian which results from the perturbative mapping of the original two-band Hubbard Hamiltonian. The only parameters used for calculating the magnetic phase diagram are the parameters of the original two-band Hubbard Hamiltonian.

引用

页码：12487 / 12491

页数：5

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