SUPERCONDUCTIVITY IN CORRELATED WAVEFUNCTIONS

被引:19
作者
GROS, C
POILBLANC, D
RICE, TM
ZHANG, FC
机构
[1] ETH-Honggerberg, Switzerland
来源
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1988年 / 153卷 / 01期
关键词
Superconducting Materials;
D O I
10.1016/0921-4534(88)90715-0
中图分类号
O59 [应用物理学];
学科分类号
摘要
We discuss variational approaches to the one band Hamiltonian in the projected subspace. This Hamiltonian has a kinetic energy term for charge degree of freedom and nearest neighbor antiferromagnetic spin-spin interactions. We show that the project d-wave BCS state (RVB-wavefunction) is a quantum spin liquid. This is done with results from numerical evaluation of the wavefunction, renormalized mean field theory and results from exact diagonalization of small systems. Off half-filling, this wavefunction leads to superconductivity with an order parameter which has d-symmetry.
引用
收藏
页码:543 / 548
页数:6
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