SPIN FLUCTUATIONS IN FRUSTRATED KAGOME LATTICE SYSTEM SRCR8GA4O19 STUDIED BY MUON SPIN RELAXATION

被引：206

作者：

UEMURA, YJ

KEREN, A

KOJIMA, K

LE, LP

LUKE, GM

WU, WD

AJIRO, Y

ASANO, T

KURIYAMA, Y

MEKATA, M

KIKUCHI, H

KAKURAI, K

机构：

[1] FUKUI UNIV,DEPT APPL PHYS,FUKUI 910,JAPAN

[2] UNIV TSUKUBA,INST PHYS,TSUKUBA,IBARAKI 305,JAPAN

[3] UNIV TOKYO,INST SOLID STATE PHYS,TOKYO 106,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.73.3306

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed muon spin relaxation measurements of the frustrated kagomé lattice spin system SrCr8Ga4O19. Our results demonstrate the slowing down of the Cr spin fluctuations when cooling toward the susceptibility-cusp temperature Tg∼3.5 K. The saturation of the relaxation rate below Tg, together with its weak dependence on longitudinal field (LF) between 0 and 2 kG, indicates the presence of dynamic spin fluctuations persisting even at T∼100 mK without static order parameter. We propose a spin-liquid type ground state to explain an undecouplable Gaussian shape of the relaxation function observed at T≤Tg. © 1994 The American Physical Society.

引用

页码：3306 / 3309

页数：4

共 21 条

[1] RESONATING VALENCE BONDS - NEW KIND OF INSULATOR [J].