Evidence for proximity of YFe2Si2 to a magnetic quantum critical point

Article

关键词: SUPERCONDUCTIVITY;    IRON;    DIFFRACTION;    MOSSBAUER;    TB;    LU;   

DOI  :  10.1103/PhysRevB.93.245155

来源: SCIE

【 摘 要 】

Calculations of the electronic and magnetic properties of the nonmagnetic metallic compound YFe2Si2 are reported. These predict at the density functional level a magnetic state involving ordering along the c axis. This predicted ground state contrasts with experiment, which does not show magnetic order. The electronic structure is three dimensional, and is similar to that of the unconventional superconductor YFe2Ge2 as well as that of the high-pressure collapsed tetragonal phase of KFe2As2, which is also a superconductor. Based on the results in relation to experiment, we infer that properties of YFe2Si2 are strongly influenced by a nearby antiferromagnetic quantum critical point.

【 授权许可】

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