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

页码：928 / 930

页数：3

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