The paper describes and conceptualizes results of an experimental study of a new class of interferometers, electronic analogues of known optical interference schemes, in the quantum Hall effect regime, which are based on co-propagating edge states.
The total cross sections for photodetachment of the metastable 1s 2 2p 3 4 S • and 1s2s2p 3 6 S • excited bound states of the negative ion of beryllium are presented for a range of initial photon energies across and beyond the 1s detachment threshold. A multichannel close-coupling R-matrix approximation is used to compute the cross sections, with sophisticated configuration-interaction wavefunctions being used to represent the initial and final states. At present there are no other theoretical or experimental data available with which to compare the cross sections for these two photodetachment processes.
Experiments on the study of topological surface states of magnetic and nonmagnetic Weyl semimetals charge transfer are presented. For surface states contribution the stationary and nonstationary Josephson effect realized at superconductortopological semi-metal-superconductor hybrid structures is applied.
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