论文标题
Terahertz光谱证据的证据证明可能40 K的rhenium型畸形甲酸盐中可能40 K超导性
Terahertz spectroscopy evidence of possible 40 K superconductivity in rhenium-doped strontium ruthenates
论文作者
论文摘要
牙ruthatium牙酸酯与氧化铜超导体有许多相似之处，并且在研究导致高温超导性的机理和条件的研究中特别感兴趣。我们在这里报告了超导性的多种实验指示，在40 K时发作在ruthenate的40 K中，由Rhenium和selenium掺杂，并用氯将用作通量。主要的实验证据来自该材料的Terahertz光谱，其次是AC和DC磁化，以及测量其热容量和磁磁性。结构和形态学研究揭示了该多晶材料的异物质性质以及晶格参数相对于原始阶段的变化。实验数据表明，与大部分样品相比，表面上的临界温度更高。
Strontium ruthenates have many similarities with copper oxide superconductors and are of particular interest for the investigation of the mechanisms and conditions which lead to high-temperature superconductivity. We report here on multiple experimental indications of superconductivity with onset at 40 K in strontium ruthenate doped by rhenium and selenium with chlorine used as the flux. The main experimental evidence arises from terahertz spectroscopy of this material followed by AC and DC magnetization, as well as measurements of its heat capacity and magnetoresistance. Structural and morphological studies revealed the heterophase nature of this polycrystalline material as well as the changes of lattice parameters relative to the original phases. Experimental data show a higher critical temperature on the surface compared to that of the bulk of the sample.
