MAGNETIC FLUCTUATIONS IN THE CANTED ANTIFERROMAGNETIC PHASE OF A T-J MODEL

被引：3

作者：

PSALTAKIS, GC ^{[1
]}

PAPANICOLAOU, N ^{[1
]}

机构：

[1] RES CTR CRETE,GR-71110 HERAKLION,GREECE

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.42.10592

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dynamics of magnetic fluctuations in the canted antiferromagnetic phase of a t-J model is studied within a suitable 1/N expansion. We calculate the dynamical structure factor and assess the effect of hole doping on the excitation spectrum, the staggered antiferromagnetic moment, and the perpendicular uniform ferromagnetic moment. The average long-wavelength excitation energies in the transverse direction are shown to soften with increasing hole concentration, in qualitative agreement with recent neutron-scattering experiments in doped antiferromagnets. © 1990 The American Physical Society.

引用

收藏

页码：10592 / 10596

页数：5

相关论文

共 19 条

[1] MAGNETIC DYNAMICS OF LA2CUO4 AND LA2-XBAXCUO4 [J].

AEPPLI, G ;

HAYDEN, SM ;

MOOK, HA ;

FISK, Z ;

CHEONG, SW ;

RYTZ, D ;

REMEIKA, JP ;

ESPINOSA, GP ;

COOPER, AS .

PHYSICAL REVIEW LETTERS, 1989, 62 (17) :2052-2055

[2] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[3] AN APPROXIMATE QUANTUM THEORY OF THE ANTIFERROMAGNETIC GROUND STATE [J].

ANDERSON, PW .

PHYSICAL REVIEW, 1952, 86 (05) :694-701

[4]

BARYAKHTAR VG, 1968, FIZ TVERD TELA+, V10, P605

[5] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[6]

BIRGENEAU RJ, 1989, PHYSICAL PROPERTIES, V1

[7] EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].

DEGENNES, PG .

PHYSICAL REVIEW, 1960, 118 (01) :141-154

[8] PHASE-SEPARATION IN THE T-J MODEL [J].

EMERY, VJ ;

KIVELSON, SA ;

LIN, HQ .

PHYSICAL REVIEW LETTERS, 1990, 64 (04) :475-478

[9] SUM-RULES FOR FREQUENCY SPECTRUM OF LINEAR MAGNETIC CHAINS [J].

HOHENBERG, PC ;

BRINKMAN, WF .

PHYSICAL REVIEW B, 1974, 10 (01) :128-131

[10] PHASE-SEPARATION IN A HIGH-PRESSURE-OXYGENATED LA2CUO4+DELTA CRYSTAL - EVIDENCE FROM ANISOTROPIC ELECTRONIC TRANSPORT AND MAGNETIC-SUSCEPTIBILITY [J].

HUNDLEY, MF ;

THOMPSON, JD ;

CHEONG, SW ;

FISK, Z ;

SCHIRBER, JE .

PHYSICAL REVIEW B, 1990, 41 (07) :4062-4065