Multiple superconducting phases in heavy fermion compounds PrOs4Sb12 and CeCoIn5

Pramana

Yuji Matsuda1 2¹ 

[1] Department of Physics, Kyoto University, Kyoto 606-8502, Japan$$

关键词: Multiple superconductivity;    heavy fermion;    Fulde-Ferrel-Larkin-Ovchinikov.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

In recently discovered heavy fermion compounds, quasi-two-dimensional CeCoIn5 and skutterudite PrOs4Sb12, multiple superconducting phases with different symmetries manifest themselves below 𝑇c. The angle-resolved magnetothermal transport measurements revealed that in PrOs4Sb12 a novel change in the symmetry of the superconducting gap function occurs deep inside the superconducting state. The ultrasound velocity measurements revealed that in CeCoIn5 the Fulde-Ferrel-Larkin-Ovchinikov (FFLO) phase, in which the order parameter is spatially modulated and has planar nodes aligned perpendicular to the vortices, appears at low temperature and high field. These results open up a new realm for the study of the superconductivity with multiple phases.

【 授权许可】

Unknown