NaCl-type In1-xPbxTe（x = 0-0.8）的高压合成及超导性能
High-pressure synthesis and superconducting properties of NaCl-type In1-xPbxTe (x = 0-0.8)
摘要：
我们研究了Pb取代对高压合成的NaCl型In_（1-x）Pb_xTe样品超导电性的影响。得到了x = 0-0.8的多晶样品，Pb取代使晶格常数系统地增加。Pb掺杂使超导转变温度（Tc ~3 K（x = 0））提高到5.3K（x = 0.4）。通过对NaCl型InTe和PbTe电子态的比较，我们认为Pb的替代增加了电子载流子。在传统的配对机制的基础上，结合In的跳价态，讨论了该体系Tc增强的可能机制。
英文摘要：
We have investigated the Pb-substitution effect on the superconductivity of NaCl-type In1-xPbxTe samples obtained using high-pressure synthesis. Polycrystalline samples with x = 0-0.8 were obtained, and the lattice parameter systematically increased by Pb substitution. The superconducting transition temperature (Tc ~3 K for x = 0) increased to 5.3 K (for x = 0.4) by Pb substitutions. According to the comparison of the electronic states between NaCl-type InTe and PbTe, we consider that the Pb substitution increases electron carriers. Possible mechanisms of the enhancement of Tc in this system have been discussed on the basis of conventional pairing mechanism and the possibility of the relation to the valence-skipping state of In.
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