Signature of Superconductivity in Orthorhombic CoSb Monolayer Films on SrTiO3(001)
Signature of Superconductivity in Orthorhombic CoSb Monolayer Films on SrTiO3(001)
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SrTiO3(001) 上正交 CoSb 单层薄膜的超导特征
DOI：
10.1021/acsnano.9b04223
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发表时间：
2019
期刊：
影响因子：
17.1
通讯作者：
Qi-Kun Xue
中科院分区：
文献类型：
--
作者：
Cui Ding;Guanming Gong;Yanzhao Liu;Fawei Zheng;Zhiyu Zhang;Haohao Yang;Zhe Li;Ying Xing;Jun Ge;Ke He;Wei Li;Ping Zhang;Jian Wang;Lili Wang;Qi-Kun Xue
采用分子束外延技术在SrTiO 3（001）衬底上制备了正交相CoSb单层膜，原位扫描隧道谱观察到费米能级附近的对称带隙，相干峰位于±（6-7）meV，离体磁化强度测量表明，在14 K时，Te和Si保护的CoSb单层膜发生抗磁转变。这些结果表明，在SrTiO_3（001）衬底上的CoSb正交单分子膜中存在超导电性。
We prepare orthorhombic CoSb monolayer films on SrTiO3(001) substrate by molecular beam epitaxy and observe symmetric gap around the Fermi level with coherence peaks at ± (6–7) meV byin situscanning tunneling spectroscopy.Ex situmagnetization measurements of the films protected by Te and Si films consistently reveal a diamagnetic transition at 14 K. These results suggest the occurrence of superconductivity in orthorhombic CoSb monolayers on SrTiO3(001).