RAMAN-SPECTRUM IN THE T-J MODEL

被引：27

作者：

GAGLIANO, E

BACCI, S

机构：

[1] Physics Department, Material Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801

[2] Physics Department, Science and Technology Center for Superconductivity, University of Illinois at Urbana-Champaign, Urbana, IL 61801

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.42.8772

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied, using exact diagonalization techniques, the Raman spectrum in the t-J model in the zero- and one-hole subspace. In both sectors we obtain a very good agreement with experimental measurements in the B1g geometry. In the doped case the spectrum becomes broader, it is shifted to lower frequencies, and the peak at 2.97J, identified as a two-magnon process, disappears. We found that the low-energy excitations are string states and two-magnon processes in the neighborhood of the hole. © 1990 The American Physical Society.

引用

页码：8772 / 8775

页数：4

共 31 条

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