Reemergent Superconductivity and Avoided Quantum Criticality in Cd-Doped CeIrIn5 under Pressure
Reemergent Superconductivity and Avoided Quantum Criticality in Cd-Doped CeIrIn5 under Pressure
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压力下掺镉 CellIn5 的再现超导性和避免量子临界
DOI：
10.1103/physrevlett.114.146403
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发表时间：
2015
影响因子：
8.6
通讯作者：
Lu Xin
中科院分区：
文献类型：
--
作者：
Chen Y.;Jiang W. B.;Guo C. Y.;Ronning F.;Bauer E. D.;Park Tuson;Yuan H. Q.;Fisk Z.;Thompson J. D.;Lu Xin
我们研究了1%Cd掺杂样品在高达2.7 GPa静水压下的电阻率和热容，在此附近，长程反铁磁有序被抑制，块体超导电性突然恢复。压强接近于2.7 Gpa的原始压强，在压强下没有量子临界点的信号支持常压下反铁磁矩的局部起源。超导体之间的相似之处以及对Cd取代的反应表明了一种共同的磁性机制。
We investigated the electrical resistivity and heat capacity of 1% Cd-dopedunder hydrostatic pressure up to 2.7 GPa, near where long-range antiferromagnetic order is suppressed and bulk superconductivity suddenly reemerges. The pressure-inducedis close to that of pristineat 2.7 GPa, and no signatures of a quantum critical point under pressure support a local origin of the antiferromagnetic moments inat ambient pressure. Similarities between superconductorsandin response to Cd substitutions suggest a common magnetic mechanism.