Details

Autor(en) / Beteiligte

• Meng Lyu
• Hengcan Zhao
• Jiahao Zhang
• Zhen Wang
• Shuai Zhang
• Peijie Sun

Titel

CeAu2In4:A candidate of quasi-one-dimensional antiferromagnetic Kondo lattice

Ist Teil von

• 中国物理B（英文版）, 2021-08, Vol.30 (8), p.169-175

Ort / Verlag

Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Needle-like single crystals of CeAu2In4 have been grown from In flux and characterized as a new candidate of quasi-one-dimensional Kondo lattice compound by crystallographic,magnetic,transport,and specific-heat measurements down to very low temperatures.We observe an antiferromagnetic transition at TN ≈ 0.9 K,a highly non-mean-field profile of the corresponding peak in specific heat,and a large Sommerfeld coefficient γ =369 mJ.mol 1.K 2.The Kondo temperature TK is estimated to be 1.1 K,being low and comparable to TN.While Fermi liquid behavior is observed deep into the magnetically ordered phase,the Kadowaki-Woods ratio is much reduced relative to the expected value for Ce compounds with Kramers doublet ground state.Markedly,this feature shares striking similarities to that of the prototypical quasi-one-dimensional compounds YbNi4P2 and CeRh6Ge4 with tunable ferromagnetic quantum critical point.Given the shortest Ce-Ce distance along the needle direction,CeAu2In4 appears to be an interesting model system for exploring antiferromagnetic quantum critical behaviors in a quasi-one-dimensional Kondo lattice with enhanced quantum fluctuations.