88 citations · 461 across the 35 of their papers we have counts for
5 papers · 1 filter
Hybridization of topological surface states with a flat band
Sergey S. Krishtopenko, Mauro Antezza, Frédéric Teppe
We address the problem of hybridization between topological surface states and a non-topological flat bulk band. Our model, being a mixture of three-dimensional Bernevig-Hughes-Zha…
Unconventional Reentrant Quantum Hall Effect in a HgTe/CdHgTe Double Quantum Well
M. V. Yakunin, S. S. Krishtopenko, S. M. Podgornykh +7
We report on observation of an unconventional structure of the quantum Hall effect (QHE) in a -type HgTe/CdHgTe double quantum well (DQW) consisting of two HgTe lay…
Perspectives of HgTe Topological Insulators for Quantum Hall Metrology
Ivan Yahniuk, Sergey S. Krishtopenko, Grzegorz Grabecki +16
We report the studies of high-quality HgTe/(Cd,Hg)Te quantum wells (QWs) with a width close to the critical one , corresponding to the topological phase transition and graphen…
Spin splitting of surface states in HgTe quantum wells
A. A. Dobretsova, Z. D. Kvon, S. S. Krishtopenko +2
We report on beating appearance in Shubnikov-de Haas oscillations in conduction band of 18-22nm HgTe quantum wells under applied top-gate voltage. Analysis of the beatings reveals…
Terahertz detection of magnetic field-driven topological phase transition in HgTe-based transistors
A. Kadykov, F. Teppe, C. Consejo +12
We report on Terahertz detection by inverted band structure HgTe-based Field Effect Transistor up to room temperature. At low temperature, we show that nonlinearities of the transi…