EXISTENCE OF 2 PHASE TRANSITIONS IN HUBBARD MODEL

被引：102

作者：

LANGER, W

PLISCHKE, M

MATTIS, D

机构：

[1] Goddard Institute for Space Studies, National Aeronautics and Space Administration, New York

[2] Belfer Graduate School of Science, Yeshiva University, New York

来源：

PHYSICAL REVIEW LETTERS | 1969年 / 23卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.23.1448

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We solve the Bubbard model, for one electron per atom in a simple cubic structure, using one-particle Green's functions. We determine the accuracy of this calculation to be good by comparison with an exact solution by Lieb and Wu of a one-dimensional limiting case. When the Coulomb interaction U exceeds about 0.27 of the bandwidth in three dimensions we find there are two critical temperatures: TN, the Néel order-disorder transition temperature.

引用

页码：1448 / &

共 15 条

[1]

[Anonymous], 1960, SOV PHYS USPEKHI, DOI [DOI 10.1070/PU1960V003N03ABEH003275, 10.1070/pu1960v003n03abeh003275]

[2]

BROUT R, 1965, PHASE TRANSITION, P15

[3] TRANSITION ENTRE ETATS METALLIQUES ET ISOLANTS POUR UN GAZ DELECTRONS - APPLICATION AUX BANDES DIMPURETES ET AUX ANTIFERROMAGNETIQUES .1. [J].