127 citations · 265 across the 9 of their papers we have counts for
9 papers
2D electron gas in chalcogenide multilayers
Aleksandr Kazakov, Tomasz Wojtowicz
Semiconductor interfaces, such as these existing in multilayer structures (e.g., quantum wells (QWs)), are interesting because of their ability to form 2D electron gases (2DEGs), i…
Highly skewed current-phase relation in superconductor-topological insulator-superconductor Josephson junctions
Morteza Kayyalha, Aleksandr Kazakov, Ireneusz Miotkowski +3
Three-dimensional topological insulators (TI's) in proximity with superconductors are expected to exhibit exotic phenomena such as topological superconductivity (TSC) and Majorana…
Anomalous low-temperature enhancement of supercurrent in topological-insulator nanoribbon Josephson junctions: evidence for low-energy Andreev bound states
Morteza Kayyalha, Mehdi Kargarian, Aleksandr Kazakov +5
We report anomalous enhancement of the critical current at low temperatures in gate-tunable Josephson junctions made from topological insulator BiSbTeSe nanoribbons with superc…
Gate-tunable supercurrent and multiple Andreev reflections in a superconductor-topological insulator nanoribbon-superconductor hybrid device
Luis A. Jauregui, Morteza Kayyalha, Aleksander Kazakov +3
We report on the observation of gate-tunable proximity-induced superconductivity and multiple Andreev reflections (MAR) in a bulk-insulating BiSbTeSe topological insulator nano…
Parafermion supporting platform based on spin transitions in the fractional quantum Hall effect regime
Tailung Wu, Aleksandr Kazakov, George Simion +7
We propose an experimentally-feasible system based on spin transitions in the fractional quantum Hall effect regime where parafermions, high-order non-abelian excitations, can be p…
Disorder-generated non-Abelions
G. E. Simion, A. Kazakov, L. P. Rokhinson +2
Two classes of topological superconductors and Majorana modes in condensed matter systems are known to date: one, in which impurity disorder strongly suppresses topological superco…
Mesoscopic transport in electrostatically-defined spin-full channels in quantum Hall ferromagnets
Aleksandr Kazakov, George Simion, Yuli Lyanda-Geller +5
In this work we use electrostatic control of quantum Hall ferromagnetic transitions in CdMnTe quantum wells to study electron transport through individual domain walls (DWs) induce…
Electrostatic control of quantum Hall ferromagnetic transition, a step toward reconfigurable network of helical channels
Aleksandr Kazakov, George Simion, Yuli Lyanda-Geller +5
Ferromagnetic transitions between quantum Hall states with different polarization at a fixed filling factor can be studied by varying the ratio of cyclotron and Zeeman energies in…
Induced superconductivity in high mobility two dimensional electron gas in GaAs heterostructures
Zhong Wan, Aleksandr Kazakov, Michael J. Manfra +3
Introduction of a Josephson field effect transistor (JoFET) concept sparked active research on proximity effects in semiconductors. Induced superconductivity and electrostatic cont…