Frustration driven lattice distortion:: an NMR investigation of Y2Mo2O7 -: art. no. 177201

被引：70

作者：

Keren, A ^{[1
]}

Gardner, JS

机构：

[1] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[2] Natl Res Council Canada, NPMR, Chalk River Labs, Chalk River, ON K0J 1J0, Canada

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.87.177201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the Y-89 NMR spectrum and spin lattice relaxation, T-l, in the magnetically frustrated pyrochlore Y2Mo2O7. We find that upon cooling the spectrum shifts, and broadens asymmetrically. A detailed examination of the low T spectrum reveals that it is constructed from multiple peaks, each shifted by a different amount. We argue that this spectrum is due to discrete lattice distortions and speculate that these distortions relieve the frustration and reduce the system's energy.

引用

页码：177201 / 177201

页数：4

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