SPIN-PEIERLS GROUND-STATES AND FRUSTRATION IN A MULTIBAND PEIERLS-HUBBARD MODEL

被引：31

作者：

RODER, H

BISHOP, AR

GAMMEL, JT

机构：

[1] LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545

[2] NCCOSC,DIV RDT&E,NRAD,MAT RES BRANCH,SAN DIEGO,CA 92152

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.70.3498

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We discuss the consequences of including both electron-phonon and electron-electron couplings in multiband models, focusing on numerical studies of a one-dimensional two-band model in the intermediate regime for both coupling strengths. Spin-Peierls as well as long-period, frustrated ground states are identified, reminiscent of those found in axial next-nearest-neighbor Ising models. We speculate on experimentally observable signatures of this rich phase diagram.

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页码：3498 / 3501

页数：4

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