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Superconductivity and phase instability of NH3-free Na-intercalated FeSe1-zSz
Jiangang Guo, Hechang Lei, Fumitaka Hayashi +1
The discovery of ThCr2Si2-type AxFe2-ySe2 (A = K, Rb, Cs and Tl) with Tc ~ 30K make much progress in iron-based superconducting field, but their multiple-phase separations are disa…
Emergence of magnetism and controlling factors of superconductivity in Li/Na-ammonia co-intercalated FeSe1-zTez
Hechang Lei, Jiangang Guo, Fumitaka Hayashi +1
The discovery of superconductivity in alkali-ammonia co-intercalated FeSe has generated intensive interest because of their highest Tc (~ 45 K) among iron-chalcogenide superconduct…
Layered Compounds BaM2Ge4Ch6 (M = Rh, Ir and Ch = S, Se) with Pyrite-Type Building Blocks and Ge-Ch Heteromolecule-Like Anions
Hechang Lei, Jun-ichi Yamaura, Jiangang Guo +3
Structure and chemical features of layered compounds BaM2Ge4Ch6 (M = Rh, Ir; Ch = S, Se) synthesized under high-pressure and high-temperature method are systematically studied. The…
CuSe-based layered compound BiYOCuSe as a quasi-two-dimensional metal
S. G. Tan, D. F. Shao, W. J. Lu +6
We have investigated the physical properties of a new layered oxyselenide BiYOCuSe, which crystallizes in an unusual intergrowth structure with CuSe$_…