Microwave Magnetic Absorption in HgSe with Co and Ni Impurities

Peculiarities of magnetic oscillations in HgSe monocrystal with Co impurities of low concentration (<1 at%)

“…1, the oscillations, at doping with Co ions, have a significantly bigger period compared with oscillations at doping with Fe ions. This difference is caused by the fact that Fermi level is located significantly lower in the first case than in the second, that corresponds with the results of the referenced studies [6,17,18,20].…”

“…When it is included in HgSe matrix lattice, two s-electrons bond with s-electrons of surrounding lattice atoms, five d-electrons create a deep impurity band, and one d-electron becomes weakly bond with the lattice, transfers to degenerated conductivity band and has a resonance energy level E C ∼ 0.2 eV [6]. Thus, Fe ion on the outer shell has five d-electrons, that give the typical EPR spectrum, described in several studies [17,18].…”

“…Co atom on the outer shall has nine electrons, two of which are in s-state, as in Fe atom, while the other seven are in d-state. The first ones create bonds with the surrounding lattice atoms, one d-electron transfers to degenerated conductivity band, while six electrons create deep impurity band, that gives the EPR spectrum, typical for that impurity [19]. It contains only one line, that in some directions is weakly split by the crystal field.…”

“…We examined the peculiarities of the positive microwave absorption in HgSe monocrystal with impurities of Fe of low concentration in weak fields in study [15], while in SdH oscillations appearing area (H > 10 kOe)in study [4]. Results of the study of the microwave absorption in HgSe monocrystal with impurities of Co of low concentration in weak fields are described in article [16].…”