Effect of Fe on the conduction band of HgSe

A systematic analysis of the de Haas–van Alphen oscillations in ${\mathrm{Hg}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{Fe}}_{\mathrm{x}}$Se for 0.0005≲x≲0.05 is presented. Measurements of the Dingle temperature show anomalously low values with a minimum for x∼0.001, a result consistent with prior mobility measurements. Effective-mass measurements and spectral analysis of the oscillations indicate that, for x≤0.03, Fe does not induce gross modifications to the conduction-band structure. It is also found that the addition of Fe reduces the inversion asymmetry splitting of the conduction band, particularly when x≳0.02. .AE