QUASI-PARTICLE PROPERTIES IN EFFECTIVE MODELS FOR STRONGLY CORRELATED ELECTRONS

被引：59

作者：

SEGA, I

PRLOVSEK, P

机构：

[1] J. Stefan Institute, University of Ljubljana

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.42.892

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The single-hole states are studied by the exact diagonalization method in two models for strongly correlated systems: the single-band effective (t-J) model and the Kondo-lattice model. The coherent mass m* of the quasiparticle and the frequency-dependent conductivity () are calculated for clusters with 4×4 and 8×4 sites. In particular, () shows an isolated quasiparticle peak of weak intensity at small and a broad but structured incoherent part at higher. © 1990 The American Physical Society.

引用

页码：892 / 897

页数：6

共 27 条

[1]

[Anonymous], UNPUB

[2] THE RESONATING VALENCE BOND STATE AND HIGH-TC SUPERCONDUCTIVITY - A MEAN FIELD-THEORY [J].

BASKARAN, G ;

ZOU, Z ;

ANDERSON, PW .

SOLID STATE COMMUNICATIONS, 1987, 63 (11) :973-976

[3] EXACT-DIAGONALIZATION STUDY OF THE EFFECTIVE MODEL FOR HOLES IN THE PLANAR ANTIFERROMAGNET [J].

BONCA, J ;

PRELOVSEK, P ;

SEGA, I .

PHYSICAL REVIEW B, 1989, 39 (10) :7074-7080

[4] SINGLE-PARTICLE EXCITATIONS IN MAGNETIC INSULATORS [J].

BRINKMAN, WF ;

RICE, TM .

PHYSICAL REVIEW B-SOLID STATE, 1970, 2 (05) :1324-+

[5] KINETIC EXCHANGE INTERACTION IN A NARROW S-BAND [J].

CHAO, KA ;

SPALEK, J ;

OLES, AM .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1977, 10 (10) :L271-L276

[6] REFLECTIVITY AND CONDUCTIVITY OF YBA2CU3O7 [J].

COLLINS, RT ;

SCHLESINGER, Z ;

HOLTZBERG, F ;

CHAUDHARI, P ;

FEILD, C .

PHYSICAL REVIEW B, 1989, 39 (10) :6571-6574

[7]

DAGOTTO E, UNPUB

[8] MECHANISM FOR HIGH-TEMPERATURE SUPERCONDUCTIVITY [J].

EMERY, VJ ;

REITER, G .

PHYSICAL REVIEW B, 1988, 38 (07) :4547-4556

[9] THEORY OF HIGH-TC SUPERCONDUCTIVITY IN OXIDES [J].

EMERY, VJ .

PHYSICAL REVIEW LETTERS, 1987, 58 (26) :2794-2797

[10] WICKS THEOREM FOR CHARGED SPIN SYSTEMS [J].

GROS, C ;

JOHNSON, MD .

PHYSICAL REVIEW B, 1989, 40 (13) :9423-9426

← 1 2 3 →