Quantum critical behavior in an antiferromagnetic heavy-fermion Kondo lattice system (Ce1-xLax)2Ir3Ge5

被引：4

作者：

Khan, Rajwali ^{[1
]}

Mao, Qianhui ^{[1
]}

Wang, Hangdong ^{[2
]}

Yang, Jinhu ^{[2
]}

Du, Jianhua ^{[1
]}

Xu, Binjie ^{[1
]}

Zhou, Yuxing ^{[1
]}

Zhang, Yannan ^{[1
]}

Chen, Bing ^{[2
]}

Fang, Minghu ^{[1
,3
]}

机构：

[1] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

[2] Hangzhou Normal Univ, Dept Phys, Hangzhou 310036, Zhejiang, Peoples R China

[3] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

来源：

CHINESE PHYSICS B | 2017年 / 26卷 / 01期

基金：

中国国家自然科学基金;

关键词：

quantum critical point; antiferromagnetic Kondo lattice system; (Ce1-xLax)(2)Ir3Ge5; LIQUID BEHAVIOR; CRITICAL-POINT; SUPERCONDUCTIVITY; CE2IR3GE5; PRESSURE; FIELD;

D O I：

10.1088/1674-1056/26/1/017401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The measurements on temperature dependences of magnetic susceptibility chi (T), specific heat C (T), and electrical resistivity rho (T) were carried out for the antiferromagnetic (AFM) (Ce1-xLax)(2)Ir3Ge5 (0 <= x <= 0.66) system. It was found that the Neel temperature T-N decreases with increasing La content x, and reaches 0 K near a critical content x(cr) = 0.6. A new phase diagram was constructed based on these measurements. A non-Fermi liquid behavior in rho (T) and a log T relationship in C (T) were found in the samples near x(cr), indicating them to be near an AFM quantum critical point (QCP) with strong spin fluctuation. Our finding indicates that (Ce1-xLax)(2)Ir3Ge5 may be a new platform to search for unconventional superconductivity.

引用

页数：6

共 32 条

[1] Avoided antiferromagnetic order and quantum critical point in CeCoIn5 -: art. no. 257001 [J].