ic4018135_si_001.cif (3.09 kB)

New Layered Fluorosulfide SrFBiS2

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posted on 16.09.2013, 00:00 by Hechang Lei, Kefeng Wang, Milinda Abeykoon, Emil S. Bozin, Cedomir Petrovic
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.