MAGNETIC-SUSCEPTIBILITY IN THE SPIN-PEIERLS SYSTEM CUGEO3

被引：226

作者：

RIERA, J ^{[1
]}

DOBRY, A ^{[1
]}

机构：

[1] UNIV NACL ROSARIO,CONSEJO NACL INVEST CIENT & TECN,DEPT FIS,RA-2000 ROSARIO,ARGENTINA

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.51.16098

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study numerically, using a one-dimensional Heisenberg model coupled to the lattice in the adiabatic approximation, the spin-Peierls transition in the linear Cu2+ spin-1/2 chains in the inorganic compound CuGeO3, which has been recently observed experimentally. We suggest that the magnetic susceptibility, the temperature dependence of the spin gap, and the spin-Peierls transition temperature of this material can be reasonably described by including nearest and next-nearest-neighbor antiferromagnetic interactions along the chain. We estimate that the nearest-neighbor exchange parameter J is approximately 160 K, and that the next-nearest-neighbor exchange parameter is approximately 0.36J. © 1995 The American Physical Society.

引用

页码：16098 / 16102

页数：5

共 27 条

[1] SUSCEPTIBILITY AND EXCITATION SPECTRUM OF (VO)2P2O7 IN LADDER AND DIMER-CHAIN MODELS [J].

BARNES, T ;

RIERA, J .

PHYSICAL REVIEW B, 1994, 50 (10) :6817-6822

[2] INSTABILITY OF UNIFORM ANTIFERROMAGNETIC CHAIN .1. XY MODEL IN ADIABATIC APPROXIMATION [J].

BENI, G ;

PINCUS, P .

JOURNAL OF CHEMICAL PHYSICS, 1972, 57 (08) :3531-+

[3] ALTERNATING LINEAR-CHAIN ANTIFERROMAGNETISM IN COPPER NITRATE CU(NO3)2.2.5H2O [J].

BONNER, JC ;

FRIEDBERG, SA ;

KOBAYASHI, H ;

MEIER, DL ;

BLOTE, HWJ .

PHYSICAL REVIEW B, 1983, 27 (01) :248-260

[4] HIGH-FIELD SPECIFIC-HEAT AND SUSCEPTIBILITY MEASUREMENTS - RELEVANCE TO THE SPIN-PEIERLS PHASE-DIAGRAM AND THE VALIDITY OF A SOLITON PICTURE [J].

BONNER, JC ;

NORTHBY, JA ;

JACOBS, IS ;

INTERRANTE, LV .

PHYSICAL REVIEW B, 1987, 35 (04) :1791-1798

[5]

BONNER JC, 1985, NATO ASI SER, P157

[6]

Bray J. W., 1983, Extended linear chain compounds. Vol.3, P353

[7] HIGH-FIELD ELECTRON-SPIN-RESONANCE AND MAGNETIZATION IN THE DIMERIZED PHASE OF CUGEO3 [J].

BRILL, TM ;

BOUCHER, JP ;

VOIRON, J ;

DHALENNE, G ;

REVCOLEVSCHI, A ;

RENARD, JP .

PHYSICAL REVIEW LETTERS, 1994, 73 (11) :1545-1548

[8] SPIN-PEIERLS TRANSITION IN MAGNETIC-FIELD [J].

BULAEVSKII, LN ;

BUZDIN, AI ;

KHOMSKII, DI .

SOLID STATE COMMUNICATIONS, 1978, 27 (01) :5-10

[9] MODELING ELECTRON-ELECTRON INTERACTIONS IN REDUCED-DIMENSIONAL MATERIALS - BOND-CHARGE COULOMB REPULSION AND DIMERIZATION IN PEIERLS-HUBBARD MODELS [J].

CAMPBELL, DK ;

GAMMEL, JT ;

LOH, EY .

PHYSICAL REVIEW B, 1990, 42 (01) :475-492

[10] EFFECT OF MAGNETIC-FIELDS ON A SPIN-PEIERLS TRANSITION [J].

CROSS, MC .

PHYSICAL REVIEW B, 1979, 20 (11) :4606-4611

← 1 2 3 →