22 citations · 92 across the 15 of their papers we have counts for
14 papers · 1 filter
Tunneling characteristics of twisted double bilayer graphene heterostructures
Alexey A. Sokolik, Azat F. Aminov, Evgenii E. Vdovin +5
Electron tunneling between sheets of bilayer Bernal graphene twisted at different small angles was studied experimentally and theoretically. The current-voltage characteristics exh…
Observation of single antiferromagnetic magnon modes through tunnelling spectroscopy of spin-1/2 Kitaev system a-RuCl3
Servet Ozdemir, Mikhail Kashchenko, Kostya S. Novoselov
The small-gap room-temperature semiconductor a-RuCl3, which is known to undergo a Mott-Hubbard transition at low temperatures, is one of the most promising candidates for realisati…
Universal reconstructive polarimetry with graphene-metal infrared photodetectors
Valentin Semkin, Kirill Kapralov, Ilya Mazurenko +8
Recent advent of smart photodetectors, where in-situ tuning of responsivity enables the reconstruction of light intensity, polarization and spectrum by a single device, has revolut…
Optical probing of Wigner crystallization in monolayer WSe via diffraction of longitudinal excitons
Artem N. Abramov, Emil Chiglintsev, Tatiana Oskolkova +5
Monolayer transition metal dichalcogenides (TMDs) are characterized by relatively large carrier effective masses and suppressed screening of the Coulomb interaction, which substant…
Probing the features of electron dispersion by tunneling between slightly twisted bilayer graphene sheets
Alexey A. Sokolik, Azat F. Aminov, Evgenii E. Vdovin +6
Tunneling conductance between two bilayer graphene (BLG) sheets separated by 2 nm-thick insulating barrier was measured in two devices with the twist angles between BLGs less than…
Enhanced Terahertz Thermoelectricity via Engineered van Hove Singularities and Nernst Effect in Moiré Superlattices
L. Elesin, A. L. Shilov, S. Jana +14
Thermoelectric materials, long explored for energy harvesting and thermal sensing, convert heat directly into electrical signals. Extending their application to the terahertz (THz)…
Limiting performance of graphene bilayer sub-terahertz detectors at large induced band gap
Elena I. Titova, Mikhail A. Kashchenko, Andrey V. Miakonkikh +8
Electrically induced junctions in graphene bilayer (GBL) have shown superior performance for detection of sub-THz radiation at cryogenic temperatures, especially upon electri…
Hysteresis-controlled Van der Waals tunneling infrared detector enabled by selective layer heating
Dmitry A. Mylnikov, Mikhail A. Kashchenko, Ilya V. Safonov +4
Mid-infrared (mid-IR) photodetectors play a crucial role in various applications, including the development of biomimetic vision systems that emulate neuronal function. However, cu…
Multifunctional 2d infrared photodetectors enabled by asymmetric singular metasurfaces
Valentin Semkin, Aleksandr Shabanov, Kirill Kapralov +9
Two-dimensional materials offering ultrafast photoresponse suffer from low intrinsic absorbance, especially in the mid-infrared wavelength range. Challenges in 2d material doping f…
Anomalous terahertz photoconductivity caused by the superballistic flow of hydrodynamic electrons in graphene
M. Kravtsov, A. L. Shilov, Y. Yang +18
Light incident upon materials can induce changes in their electrical conductivity, a phenomenon referred to as photoresistance. In semiconductors, the photoresistance is negative,…
Infrared photodetection in graphene-based heterostructures: bolometric and thermoelectric effects at the tunneling barrier
Dmitry A. Mylnikov, Mikhail A. Kashchenko, Kirill N. Kapralov +7
Graphene/hBN/graphene tunnel devices offer promise as sensitive mid-infrared photodetectors but the microscopic origin underlying the photoresponse in them remains elusive. In this…
High-mobility compensated semimetals, orbital magnetization, and umklapp scattering in bilayer graphene moire superlattices
A. L. Shilov, M. A. Kashchenko, P. A. Pantaleón +10
Twist-controlled moire superlattices (MS) have emerged as a versatile platform in which to realize artificial systems with complex electronic spectra. Bernal-stacked bilayer graphe…
Zero-bias photodetection in 2d materials via geometric design of contacts
Valentin A. Semkin, Aleksandr V. Shabanov, Dmitry A. Mylnikov +4
Structural or crystal asymmetry are necessary conditions for emergence of zero-bias photocurrent in light detectors. Structural asymmetry has been typically achieved via dopi…
Terahertz photoconductivity in bilayer graphene transistors: evidence for tunneling at gate-induced junctions
Dmitry Mylnikov, Elena I. Titova, Mikhail A. Kashchenko +6
Photoconductivity of novel materials is the key property of interest for design of photodetectors, optical modulators, and switches. Despite the photoconductivity of most novel 2d…