CC BY
22D materials for quantum applications
E. Chiglintsev1'2, E. Barulina1, A. Shupletsov1, A. Chernov1'2*
1-Russian Quantum Center, Skolkovo Innovation City, Moscow 121205, Russia 2- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology (National Research University), Dolgoprudny 141700, Russia
Two-dimensional materials have attracted much attention due to various opportunities for applications. In example, optical properties of transition metal dichalcogenides monolayers can be controlled by several approaches, including via induced interface interaction with magnetic materials [1]. Moreover, the approach of constructing of layered monolayers one on another opened the new routes for advanced devices.
Enhanced infrared photodetection in graphene-based heterostructures due to tunneling barriers has been recently demonstrated [2]. Small-angle twisted bilayer graphene (tBLG) has also attracted much attention due to appearance of low-energy flat bands of the emerging moiré superlattice [3]. Strong electron-electron interactions within the bands lead to correlation-driven phenomena, realization of correlated phases, and result in new devices. We have performed the photoresponse measurements at 5 - 10 ^m in the tBLG, where the mis-orientation angle is close to the magic one. We detect the enhanced photoresponse compared to the previous works and reveal the polarization dependence.
Finally, twisted heterostructures are important for creation of quantum simulator to study the Hubbard model physics.
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[2] D.A. Mylnikov, M.A. Kashchenko, K.N. Kapralov, D.A. Ghazaryan, E.E. Vdovin, S.V. Morozov, K.S. Novoselov, D.A. Bandurin, A.I. Chernov, D.A. Svintsov, Infrared photodetection in graphene-based heterostructures: bolometric and thermoelectric effects at the tunneling barrier, npj 2D Materials and Applications, 8(1), p.34, (2024).
[3] S. Bhowmik, A. Ghosh, U. Chandni, Emergent phases in graphene flat bands, arXiv preprint arXiv:2309.08938, (2023).
