NONCONVENTIONAL BEHAVIOR OF THE ONE-BAND HUBBARD HAMILTONIAN IN 2 DIMENSIONS

被引：13

作者：

GALAN, J ^{[1
]}

GUINEA, F ^{[1
]}

VERGES, JA ^{[1
]}

CHIAPPE, G ^{[1
]}

LOUIS, E ^{[1
]}

机构：

[1] UNIV ALICANTE, DEPT FIS APLICADA, E-03080 ALICANTE, SPAIN

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.46.3163

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The wave-function renormalization constant Z has been calculated for the one-band Hubbard model in the square lattice. Near half-filling the Hamiltonian has been solved on finite clusters (up to 16 x 16) by means of the unrestricted Hartree-Fock approximation, whereas at high dilutions (two electrons) exact calculations have been carried out. The region of the parameter space where the system shows nonconventional behavior (Z = 0) is close to half-filling. For a given value of the Coulomb repulsion, Z vanishes at low dopings, and becomes finite as doping is increased. For very large U the constant Z remains finite for all dopings, excluding half filling. These results are cast into a plausible phase diagram.

引用

页码：3163 / 3166

页数：4

共 50 条

[1] WAVE-FUNCTION RENORMALIZATION CONSTANT FOR THE ONE-BAND HUBBARD HAMILTONIAN IN 2 DIMENSIONS
LOUIS, E
CHIAPPE, G
GALAN, J
GUINEA, F
VERGES, JA
[J]. PHYSICAL REVIEW B, 1993, 48 (01) : 426 - 436
[2] SUPERCONDUCTING CORRELATIONS IN THE ONE-BAND AND 2-BAND HUBBARD MODELS
JAIN, KP
RAMAKUMAR, R
CHANCEY, CC
[J]. PHYSICA C, 1989, 162 : 793 - 794
[3] FERROMAGNETISM IN THE ONE-BAND HUBBARD-MODEL
RIERA, JA
YOUNG, AP
[J]. PHYSICAL REVIEW B, 1989, 40 (07): : 5285 - 5288
[4] ONE-BAND FERROMAGNETISM IN THE HUBBARD-HIRSCH MODEL
IVANOV, VA
ZHURAVLEV, ME
[J]. JOURNAL OF APPLIED PHYSICS, 1992, 71 (07) : 3455 - 3456
[5] Nickelate superconductors—a renaissance of the one-band Hubbard model
Motoharu Kitatani
Liang Si
Oleg Janson
Ryotaro Arita
Zhicheng Zhong
Karsten Held
[J]. npj Quantum Materials, 5
[6] Physics of cuprates with the two-band Hubbard model: The validity of the one-band Hubbard model
Macridin, A
Jarrell, M
Maier, T
Sawatzky, GA
[J]. PHYSICAL REVIEW B, 2005, 71 (13):
[7] Optical properties of an effective one-band Hubbard model for the cuprates
Simon, ME
Aligia, AA
Gagliano, ER
[J]. PHYSICAL REVIEW B, 1997, 56 (09): : 5637 - 5647
[8] Optical conductivity of the U=infinity, one-band Hubbard model
Gehlhoff, L
[J]. PHYSICAL REVIEW B, 1996, 53 (15): : 9497 - 9500
[9] STABILITY OF THE NAGAOKA STATE IN THE ONE-BAND HUBBARD-MODEL
TIAN, GS
[J]. PHYSICAL REVIEW B, 1991, 44 (09): : 4444 - 4448
[10] THE NAGAOKA STATE IN THE ONE-BAND HUBBARD-MODEL WITH 2 AND MORE HOLES
TIAN, GS
[J]. JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1991, 24 (02): : 513 - 521

← 1 2 3 4 5 →