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Platinum metal silicides and germanides: superconductivity in non-centrosymmetric intermetallics

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, , Citation K Miliyanchuk et al 2011 J. Phys.: Conf. Ser. 273 012078 DOI 10.1088/1742-6596/273/1/012078

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1 Institute of Physical Chemistry, University of Vienna, A-1090 Wien, Austria

2 Institute of Solid State Physics, Vienna University of Technology, A-1040 Wien, Austria

3 ISIS facility, STFC, Rutherford Appleton Laboratory, Chilton, Oxfordshire, OX11 0QX, UK

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1742-6596/273/1/012078

Abstract

The family of intermetallics crystallizing in the BaAl4 type is rich in sub-groups with different ordered variants. Novel ternary compounds EpTMX3 (Ep = Ba,Sr; TM = Pt,Pd; X = Si,Ge) crystallizes in the body-centred tetragonal BaNiSn3 structure (space group I4mm) which does not possess a centre of inversion. Superconductivity in terms of a fully gapped s-wave type occurs for SrPdGe3 at Tc = 1.49 K and SrPtGe3 at Tc = 1.0 K.

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10.1088/1742-6596/273/1/012078