Coincidence of magnetic and valence quantum critical points in CeRhIn5 under pressure

被引：8

作者：

Ren, Z. ^{[1
,2
]}

Scheerer, G. W. ^{[1
]}

Aoki, D. ^{[3
,4
]}

Miyake, K. ^{[5
]}

Watanabe, S. ^{[6
]}

Jaccard, D. ^{[1
]}

机构：

[1] Univ Geneva, DQMP, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland

[2] Westlake Inst Adv Study, Inst Nat Sci, 18 Shilongshan Rd, Hangzhou, Zhejiang, Peoples R China

[3] Univ Grenoble Alpes, Commissariat Energie Atom & Energies Alternat CEA, Inst Nanosci & Cryogenie INAC PHELIOS, F-38000 Grenoble, France

[4] Tohoku Univ, Inst Mat Res, Oarai, Ibaraki 3111313, Japan

[5] Osaka Univ, Ctr Adv High Magnet Field Sci, Toyonaka, Osaka 5600043, Japan

[6] Kyushu Inst Technol, Dept Basic Sci, Kitakyushu, Fukuoka 8048550, Japan

来源：

PHYSICAL REVIEW B | 2017年 / 96卷 / 18期

基金：

日本学术振兴会;

关键词：

HEAVY-FERMION COMPOUNDS; SUPERCONDUCTIVITY; SCATTERING;

D O I：

10.1103/PhysRevB.96.184524

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present accurate electrical resistivity measurements along the two principle crystallographic axes of the pressure-induced heavy-fermion superconductor CeRhIn5 up to 5.63 GPa. For both directions, a valence crossover line is identified in the p-T plane and the extrapolation of this line to zero temperature coincides with the collapse of the magnetic ordering temperature. Furthermore, it is found that the p-T phase diagram of CeRhIn5 in the valence crossover region is very similar to that of CeCu2Si2. These results point to the essential role of Ce-4f electron delocalization in both destroying magnetic order and realizing superconductivity in CeRhIn5 under pressure.

引用

页数：5

共 24 条

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