Low-temperature thermal transport measurements of oxygen-annealed Yb2Ti2O7

被引：1

作者：

Toews, W. H. ^{[1
]}

Reid, J. A. ^{[1
]}

Thompson, J. D. ^{[2
]}

Prabhakaran, D. ^{[2
]}

Coldea, R. ^{[2
]}

Hill, R. W. ^{[1
]}

机构：

[1] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada

[2] Univ Oxford, Clarendon Lab, Parks Rd, Oxford OX1 3PU, England

来源：

PHYSICAL REVIEW B | 2020年 / 102卷 / 01期

基金：

英国工程与自然科学研究理事会; 加拿大自然科学与工程研究理事会;

关键词：

Magnetic fields - Oxygen - Binary alloys - Temperature distribution - Single crystals;

D O I：

10.1103/PhysRevB.102.014434

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-temperature thermal conductivity measurements have been conducted on an oxygen-annealed single crystal of Yb2Ti2O7 from 60 mK to 50 K and in magnetic fields up to 8 T applied in the [111] crystallographic direction. The temperature dependence of the conductivity in zero field shows a significant peak in thermal conductivity at T similar to 13 K and a sharp anomaly at T-c similar to 0.2 K suggesting that the sample's behavior is representative of the high-purity limit, with low levels of disorder. The magnetic field dependence of the thermal conductivity close to T-c reveals a reentrant magnetic phase for a field in the [111] direction. With this information, analysis of the very low magnetic field behavior of the thermal conductivity suggests the presence of significant fluctuations close to the phase line.

引用

页数：8