Unfolding the physics of URu2Si2 through silicon to phosphorus substitution

被引：22

作者：

Gallagher, A. ^{[1
]}

Chen, K. -W. ^{[1
]}

Moir, C. M. ^{[1
]}

Cary, S. K.

Kametani, F. ^{[3
]}

Kikugawa, N. ^{[1
,4
]}

Graf, D. ^{[1
]}

Albrecht-Schmitt, T. E. ^{[2
]}

Riggs, S. C. ^{[1
]}

Shekhter, A. ^{[1
]}

Baumbach, R. E. ^{[1
]}

机构：

[1] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[2] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA

[3] Florida State Univ, Ctr Appl Superconduct, Tallahassee, FL 32310 USA

[4] Natl Inst Mat Sci, 3-13 Sakura, Tsukuba, Ibaraki 3050003, Japan

来源：

NATURE COMMUNICATIONS | 2016年 / 7卷

基金：

美国国家科学基金会;

关键词：

HIDDEN-ORDER PHASE; SYMMETRY-BREAKING; FERMI-SURFACE; TRANSITION; SUPERCONDUCTIVITY; SYSTEM; TEMPERATURE; PRESSURE; MOMENT; STATES;

D O I：

10.1038/ncomms10712

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 heavy fermion intermetallic compound URu2Si2 exhibits a hidden-order phase below the temperature of 17.5 K, which supports both anomalous metallic behavior and unconventional superconductivity. While these individual phenomena have been investigated in detail, it remains unclear how they are related to each other and to what extent uranium f-electron valence fluctuations influence each one. Here we use ligand site substituted URu2Si2-xPx to establish their evolution under electronic tuning. We find that while hidden order is monotonically suppressed and destroyed for x <= 0.035, the superconducting strength evolves non-monotonically with a maximum near x approximate to 0.01 and that superconductivity is destroyed near x approximate to 0.028. This behavior reveals that hidden order depends strongly on tuning outside of the U f-electron shells. It also suggests that while hidden order provides an environment for superconductivity and anomalous metallic behavior, it's fluctuations may not be solely responsible for their progression.

引用

页数：5

共 38 条

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