MAGNON SPIN-RESONANCE IN THE HALDANE SPIN CHAINS OF NI(C2H8N2)NO2CLO4

被引：59

作者：

BRUNEL, LC

BRILL, TM

ZALIZNYAK, I

BOUCHER, JP

RENARD, JP

机构：

[1] CEN,DEPT RECH FONDAMENTALE,MAGNETISME & DIFFRACT NEUTRONS GRP,F-38041 GRENOBLE,FRANCE

[2] SERV NATL CHAMPS INTENSES,RESONANCE MAGNET SOLIDES GRP,SPECT PHYS LAB,F-38042 GRENOBLE,FRANCE

[3] UNIV PARIS 11,INST ELECTR FONDAMENTALE,F-91405 ORSAY,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.69.1699

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a high-frequency electron spin resonance study of the magnetic transitions occurring between excited states in a Haldane spin system. We show that these transitions are induced between the low-energy magnon states, which develop at the boundary (q almost-equal-to pi) of the Brillouin zone. Our study provides therefore the first evidence that, in the Haldane phase, the excitations associated with the quantum gaps correspond actually to a s = 1 magnetic state.

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页码：1699 / 1702

页数：4

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