Emergence of superconductivity in the canonical heavy-electron metal YbRh2Si2

被引：79

作者：

Schuberth, Erwin ^{[1
,2
]}

Tippmann, Marc ^{[1
,3
]}

Steinke, Lucia ^{[1
,2
]}

Lausberg, Stefan ^{[2
]}

Steppke, Alexander ^{[2
]}

Brando, Manuel ^{[2
]}

Krellner, Cornelius ^{[2
,4
]}

Geibel, Christoph ^{[2
]}

Yu, Rong ^{[5
,6
]}

Si, Qimiao ^{[7
]}

Steglich, Frank ^{[2
,8
,9
]}

机构：

[1] Bayer Akad Wissensch, Walther Meissner Inst Tieftemp Forsch, D-85748 Garching, Germany

[2] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

[3] Tech Univ Munich, Dept Phys, D-80333 Munich, Germany

[4] Goethe Univ Frankfurt, Inst Phys, D-60438 Frankfurt, Germany

[5] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China

[6] Shanghai Jiao Tong Univ, Collaborat Innovat Ctr Adv Microstruct, Dept Phys & Astron, Shanghai 200240, Peoples R China

[7] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

[8] Zhejiang Univ, Ctr Correlated Matter, Hangzhou 310058, Zhejiang, Peoples R China

[9] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

来源：

SCIENCE | 2016年 / 351卷 / 6272期

基金：

美国国家科学基金会;

关键词：

QUANTUM CRITICALITY; FERMI-SURFACE;

D O I：

10.1126/science.aaa9733

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The smooth disappearance of antiferromagnetic order in strongly correlated metals commonly furnishes the development of unconventional superconductivity. The canonical heavy-electron compound YbRh2Si2 seems to represent an apparent exception from this quantum critical paradigm in that it is not a superconductor at temperature T >= 10 millikelvin (mK). Here we report magnetic and calorimetric measurements on YbRh2Si2, down to temperatures as low as T approximate to 1 mK. The data reveal the development of nuclear antiferromagnetic order slightly above 2 mK and of heavy-electron superconductivity almost concomitantly with this order. Our results demonstrate that superconductivity in the vicinity of quantum criticality is a general phenomenon.

引用

页码：485 / 488

页数：4

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