Abstract We synthesize a single-crystal Pb1-x-ySnxScyTe (x = 0.08, y = 0.02) ingot and investigate the composition and the galvanomagnetic properties of samples cut from it. We find that all samples are single-phase and determine the distribution of tin and scandium along the ingot. As the concentration of scandium increases, we find the p-n-inversion of the conductivity type at the liquid-helium temperature, an increase in the electron concentration, and its saturation at n ≈ 1.0 × 1020 cm−3, indicating the pinning of the Fermi level by the scandium resonant level located well above the bottom of the conduction band. Using the six-band Dimmock dispersion relation, dependences of the Fermi energy on the scandium and tin content are calculated. A diagram of the electronic structure rearrangement of Pb1-x-ySnxScyTe upon increasing tin content is proposed; the energy and the compositional coefficient of the scandium level movement with respect to the band edges are estimated.

中文翻译：

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钪掺杂和基体成分变化对 Pb1-x-ySnxScyTe 合金电磁性能和电子结构的影响

摘要 我们合成了单晶 Pb1-x-ySnxScyTe (x = 0.08, y = 0.02) 锭，并研究了从其上切割的样品的成分和电磁性能。我们发现所有样品都是单相的，并确定锡和钪沿锭的分布。随着钪浓度的增加，我们发现在液氦温度下电导类型发生 pn 反转，电子浓度增加，并且在 n ≈ 1.0 × 1020 cm−3 时饱和，表明费米的钉扎位于导带底部上方的钪共振能级。使用六波段 Dimmock 色散关系，计算费米能量对钪和锡含量的依赖性。提出了增加锡含量后 Pb1-x-ySnxScyTe 的电子结构重排图；估计钪能级运动相对于带边缘的能量和成分系数。