Hall Conductance of a Two-Dimensional Electron Gas in Periodic Lattice with Triangular Antidots

The topic of this contribution is the investigation of quantum states and quantum Hall effect in electron gas subjected to a periodic potential of the lateral lattice. The potential is formed by triangular quantum antidos located on the sites of the square lattice. In a such system the inversion center and the four-fold rotation symmetry are absent. The topological invariants which characterize different magnetic subbands and their Hall conductances are calculated. It is shown that the details of the antidot geometry are crucial for the Hall conductance quantization rule. The critical values of lattice parameters defining the shape of triangular antidots at which the Hall conductance is changed drastically are determined. We demonstrate that the quantum states and Hall conductance quantization law for the triangular antidot lattice differ from the case of the square lattice with cylindrical antidots. As an example, the Hall conductances of magnetic subbands for different antidot geometries are calculated for the case when the number of magnetic flux quanta per unit cell is equal to three.Comment: 6 pages, 5 figure

АДАПТАЦИЯ КЛЕТОК БЕЛОЙ КРОВИ К ВОЗДЕЙСТВИЮ ЭЛЕКТРОМАГНИТНЫХ ПОЛЕЙ РАДИОЧАСТОТНОГО ДИАПАЗОНА

The increase of electromagnetic background has led to electromagnetic field biological effect investigations. The paper presents the research results of the white blood cells adaptation to of the radiofrequency electromagnetic field chronic exposure.Повышение электромагнитного фона окружающей среды техногенным привело к актуализации изучения биологических эффектов электромагнитных полей. В работе представлены результаты исследования адаптации клеток белой крови крыс в ответ на хроническое воздействие электромагнитных полей радиочастотного диапазона