SPIN-WAVE RENORMALIZATION IN 2-DIMENSIONAL ANTIFERROMAGNETS WITH FINITE HOLE DENSITY

被引：11

作者：

KO, DYK

机构：

[1] Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.65.116

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

When holes are doped into a two-dimensional antiferromagnet the spin excitations are renormalized. This renormalization is calculated for finite hole densities. The spin-wave spectrum is found to soften instantaneously upon doping, and the spectral functions are significantly broadened. With 0.1 hole per site the spin-wave spectrum collapses. The implications on the hole mobility is discussed briefly. © 1990 The American Physical Society.

引用

页码：116 / 119

页数：4

共 22 条

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

ANDERSON, PW .

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

[2] 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

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

BRINKMAN, WF ;

RICE, TM .

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

[4] STATIC VACANCIES ON A 2D HEISENBERG SPIN-1/2 ANTIFERROMAGNET [J].

BULUT, N ;

HONE, D ;

SCALAPINO, DJ ;

LOH, EY .

PHYSICAL REVIEW LETTERS, 1989, 62 (18) :2192-2195

[5] HUBBARD-MODEL WITH ONE HOLE - GROUND-STATE PROPERTIES [J].

DAGOTTO, E ;

MOREO, A ;

BARNES, T .

PHYSICAL REVIEW B, 1989, 40 (10) :6721-6725

[6] DYNAMICS OF ONE HOLE IN THE T-J MODEL [J].

DAGOTTO, E ;

MOREO, A ;

JOYNT, R ;

BACCI, S ;

GAGLIANO, E .

PHYSICAL REVIEW B, 1990, 41 (04) :2585-2588

[7] INSTABILITY OF THE NAGAOKA STATE WITH MORE THAN ONE HOLE [J].

DOUCOT, B ;

WEN, XG .

PHYSICAL REVIEW B, 1989, 40 (04) :2719-2722

[8] HOLES IN THE INFINITE-U HUBBARD-MODEL - INSTABILITY OF THE NAGAOKA STATE [J].

FANG, Y ;

RUCKENSTEIN, AE ;

DAGOTTO, E ;

SCHMITTRINK, S .

PHYSICAL REVIEW B, 1989, 40 (10) :7406-7409

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

GROS, C ;

JOHNSON, MD .

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

[10] HOLE DYNAMICS IN THE T-J MODEL - AN EXACT DIAGONALIZATION STUDY [J].

HASEGAWA, Y ;

POILBLANC, D .

PHYSICAL REVIEW B, 1989, 40 (13) :9035-9043

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