Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory , Upton, New York 11973, United States.
Inorg Chem. 2013 Sep 16;52(18):10685-9. doi: 10.1021/ic4018135. Epub 2013 Aug 29.
We have synthesized a new layered BiS2-based compound, SrFBiS2. This compound has a similar structure to LaOBiS2. It is built up by stacking up SrF layers and NaCl-type BiS2 layers alternatively along the c axis. Electric transport measurement indicates that SrFBiS2 is a semiconductor. Thermal transport measurement shows that SrFBiS2 has a small thermal conductivity and large Seebeck coefficient. First principle calculations are in agreement with experimental results and show that SrFBiS2 is very similar to LaOBiS2, which becomes a superconductor with F doping. Therefore, SrFBiS2 may be a parent compound of new superconductors.
我们合成了一种新型的层状 BiS2 基化合物 SrFBiS2。该化合物具有与 LaOBiS2 相似的结构。它由 SrF 层和 NaCl 型 BiS2 层沿 c 轴交替堆叠而成。电输运测量表明 SrFBiS2 是半导体。热输运测量表明 SrFBiS2 具有较小的热导率和较大的 Seebeck 系数。第一性原理计算与实验结果一致，表明 SrFBiS2 与 LaOBiS2 非常相似，后者在 F 掺杂后成为超导体。因此，SrFBiS2 可能是新型超导体的母体化合物。
