Fermi liquid breakdown and evidence for superconductivity in YFe2Ge2

被引：36
作者：
Zou, Y. [1 ]
Feng, Z. [2 ]
Logg, P. W. [1 ]
Chen, J. [1 ]
Lampronti, G. [3 ]
Grosche, F. M. [1 ]
机构：
[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[2] UCL, London Ctr Nanotechnol, London WC1H 0AH, England
[3] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
来源：
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS | 2014年 / 8卷 / 11期
基金：
英国工程与自然科学研究理事会;
关键词：
non-Fermi liquids; superconductivity; transition metals; TEMPERATURE; LUFE2GE2; STATE;
D O I：
10.1002/pssr.201409418
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the d-electron system YFe2Ge2, an unusually high and temperature dependent Sommerfeld ratio of the specific heat capacity C /T approximate to 100 mJ/(mol K-2) and an anomalous power law temperature dependence of the electrical resistivity similar or equal to 0+AT3/2 signal Fermi liquid breakdown, probably connected to a close-by quantum critical point. Full resistive transitions and DC diamagnetic screening fractions of up to 80% suggest that pure samples of YFe2Ge2 superconduct below 1.8 K. ((c) 2014 WILEY-VCH Verlag GmbH &Co. KGaA, Weinheim)
引用
收藏
页码：928 / 930
页数：3
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