LaOsSi3single crystals are synthesized for the first time by an arc melting method.The crystal features a tetragonal BaNiSn3-type structure(space group I4mm) which lacks inversion symmetry along the crystallographic c axis and is isostructural with the intensively studied Rashba-type noncentrosymmetric superconductors LaRhSi3and LaIrSi3.Unlike LaRhSi3and LaIrSi3displaying superconductivity,LaOsSi3shows only metallic behavior over the measured temperature range of 2 K–300 K.The Sommerfeld coefficient γ deriv...
【英文摘要】
LaOsSi3single crystals are synthesized for the first time by an arc melting method.The crystal features a tetragonal BaNiSn3-type structure(space group I4mm) which lacks inversion symmetry along the crystallographic c axis and is isostructural with the intensively studied Rashba-type noncentrosymmetric superconductors LaRhSi3and LaIrSi3.Unlike LaRhSi3and LaIrSi3displaying superconductivity,LaOsSi3shows only metallic behavior over the measured temperature range of 2 K–300 K.The Sommerfeld coefficient γ deriv...
【基金】
Project supported by the National Natural Science Foundation of China (Grant Nos.11274367,10904097,and 11274233) and Chinese Academy of Sciences
【更新日期】
2014-03-06
【分类号】
O611.4
【正文快照】
1.IntroductionMost superconductors have inversion symmetry in a crys-tal structure,and the superconducting state can therefore beclassified into being either symmetric or antisymmetric(tripletor singlet)paring,because an inversion with respect to the ori-
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