Energy bands splitting with interlayer broadening in Bi2Te3<Ni>
DOI:
https://doi.org/10.15330/pcss.26.1.100-104Keywords:
energy bands, self-organization, magnetoresistance oscillationAbstract
As a result of the developed technology, an ordered array of nanoislands was formed in the process of self-organization on the Bi2Te3<Ni> (0001) plane. Penetrating mainly into the interlayer space impurities create bulk periodic superstructures, and consisting of arrays of nanoislands between packet of layers, which, as a result, move apart. The symmetry of the Bi2Te3 crystal forbids the mixing of the states │s> and │dzƞ> with │px> and │py>, and │dzƞ > with the other d-states at high-symmetry points of the Brillouin zone, while mixing of all states is allowed at low-symmetry points. As a result, an increase in the potential barrier due interlayer broadening is accompanied by a shift and splitting (∆E~20 meV) of some bands and the formation of an energy gap.
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