Superconductivity at 2.3 K in the Misfit Compound (PbSe)₁.₁₆(TiSe₂)₂
The structural misfit compound (PbSe)1.16 (TiSe2)2 is reported. It is a superconductor with a Tc of 2.3 K. (PbSe)1.16 (TiSe2)2 derives from a parent compound, TiSe2, which shows a charge-density wave transition and no superconductivity. The crystal structure, characterized by high-resolution electron microscopy and powder x-ray diffraction, consists of two layers of 1T- TiSe2 alternating with a double layer of (100) PbSe. Transport measurements suggest that the superconductivity is induced by charge transfer from the PbSe layers to the TiSe2 layers.
N. Giang et al., "Superconductivity at 2.3 K in the Misfit Compound (PbSe)₁.₁₆(TiSe₂)₂," Physical review B: Condensed matter and materials physics, vol. 82, no. 2, American Physical Society (APS), Jul 2010.
The definitive version is available at https://doi.org/10.1103/PhysRevB.82.024503
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01 Jul 2010