Impurity States of Tellurium in High Magnetic Fields

摘要: From infrared magnetotransmission [1–7] and Shubnikov-de Haas [8–10] measurements on tellurium, detailed knowledge about the valence band structure has been obtained. All experimental results are consistent with a k·p perturbation model, which leads to camel-back of at H-point Brillouin zone [11,12]. Such double maximum changes energy spectrum acceptors in comparison levels hydrogenic impurity. Theoretical calculations show that splitting impurity ground state into bonding an antibonding binding energies 0.9 meV 1.2 [13–15]. Without magnetic field two valleys points H H′ tellurium do not cause valley-orbit levels, since invariance Hamiltonian under time reversal operation (which transforms each other) is broken by introduction Coulomb type potential. However, strong fields this degeneracy removed, states, especially state, should split [16]. The absolute value influenced central cell corrections, depends envelope function close site. Therefore different for expected P-, As-, Sb-, Bi-acceptors tellurium. Up now, chemical shift have investigated detail.