Low temperature specific heat of Yb2Ti2O7 single crystals

被引：4
作者：
Li, S. J. [1 ]
Che, H. L. [2 ]
Wu, J. C. [1 ]
Zhao, X. [2 ]
Sun, X. F. [1 ,3 ,4 ]
机构：
[1] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Sch Phys Sci, Hefei 230026, Anhui, Peoples R China
[3] Chinese Acad Sci, Key Lab Strongly Coupled Quantum Matter Phys, Hefei 230026, Anhui, Peoples R China
[4] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China
来源：
AIP ADVANCES | 2018年 / 8卷 / 05期
基金：
中国国家自然科学基金;
关键词：
OXIDES; EARTH;
D O I：
10.1063/1.5005988
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We study the specific heat of Yb2Ti2O7 single crystals at low temperatures down to 0.4 K and in magnetic fields along the [110] crystalline direction. There is a small peak near 0.4 K at low magnetic fields, signaturing a first-order transition, and its field dependence is consistent with that for H parallel to [100] but different from that for H parallel to [111]. The experimental data also showa broad peak at about 2 K, which has a nonmonotonic change with increasing field. This road peak is originated from the spin correlations and its field dependence can be understood from the recent numerical linked-cluster calculations [Hayre et al., Phys. Rev. B 87, 184423 (2013)]. (C) 2017 Author(s).
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页数：6
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