Pressure Study of Charged Donor Ordering in HgSe Doped with Iron and Gallium |
| C. Skierbiszewski, T. Suski High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warszawa, Poland J. Kossut, Z. Wilamowski, W. Dobrowolski and B. Witkowska Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland |
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| Transport experiments (Hall effect and conductivity) under hydrostatic pressure up to 1 GPa at liquid helium temperatures on HgSe: Fe, Ga (NFe = 2 x 1019 cm-3; 0 ≤ NGa ≤ 1019 cm-3) were performed. The results show that the gallium co-doping of HgSe:Fe decreases the degree of spatial correlations between charged impurities. Under the hydrostatic pressure, used as a tool for changing the ratio of the charged to neutral impurities, this effect is even more pronounced. A qualitative agreement between the calculation within the short-range correlation model and our experimental data is achieved. |
| DOI: 10.12693/APhysPolA.80.401 PACS numbers: 72.10.Fk, 72.20.Fr, 72.80.Jc |