Fermi liquid breakdown and evidence for superconductivity in YFe2Ge2 |
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| Authors: | Y Zou Z Feng P W Logg J Chen G Lampronti F M Grosche |
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| Institution: | 1. Cavendish Laboratory, University of Cambridge, , Cambridge CB3 0HE, UK;2. London Centre of Nanotechnology, University College London, , London WC1H 0AH, UK;3. Department of Earth Sciences, University of Cambridge, , Cambridge CB2 3EQ, UK |
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| Abstract: | In the d‐electron system YFe2Ge2, an unusually high and temperature dependent Sommerfeld ratio of the specific heat capacity C /T ～ 100 mJ/(mol K2) and an anomalous power law temperature dependence of the electrical resistivity  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. (© 2014 WILEY‐VCH Verlag GmbH &Co. KGaA, Weinheim) |
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| Keywords: | non‐Fermi liquids superconductivity transition metals |
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