A5046020581- Physics of Superconductivity and Magnetism
- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Semiconductor Quantum Structures and Devices
- Superconductivity in MgB2 and Alloys
- Spectroscopy and Quantum Chemical Studies
- Molecular Junctions and Nanostructures
- Laser-Matter Interactions and Applications
- Economic and Technological Developments in Russia
- Photoreceptor and optogenetics research
- Inorganic Fluorides and Related Compounds
- Iron-based superconductors research
- Advanced Electron Microscopy Techniques and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Strong Light-Matter Interactions
- Quantum optics and atomic interactions
- Topological Materials and Phenomena
- Crystallography and Radiation Phenomena
- Atomic and Subatomic Physics Research
- Regional Economic Development and Innovation
- Quantum, superfluid, helium dynamics
- Quantum and electron transport phenomena
- Superconducting Materials and Applications
- Semiconductor Lasers and Optical Devices
- Advanced Chemical Physics Studies
M.N. Mikheev Institute of Metal Physics
2024
Universidad Autónoma de Madrid
2022-2024
Kazan Federal University
2012-2021
Institute of Physics
2015-2021
Ruhr University Bochum
2019-2021
We study the spin-fluctuation-mediated superconducting pairing gap in a weak-coupling approach to Hubbard model for two-dimensional square lattice paramagnetic state. Performing comprehensive theoretical of phase diagram as function filling, we find that exhibits transitions from $p$-wave at very low electron fillings ${d}_{{x}^{2}\ensuremath{-}{y}^{2}}$-wave symmetry close half filling agreement with previous reports. At intermediate levels, different symmetries appear consequence changes...
The technology to produce attosecond pulses opens the door manipulate electrons in matter before their loss of quantum coherence. In two-dimensional materials, where excitonic interactions dominate optical response, a laser-induced superposition excitons may induce migration charge across system. Here, instead tailoring laser pulse order control exciton superposition, we propose strain as more feasible and robust scheme migration. Uniaxial break crystal symmetry lift degeneracy 1s states. We...
В настоящее время управление рисками инвестиционного портфеля становится особенно важным из-за усиления угроз для национальной экономики. События 2022 года, включая санкции и геополитическую неуверенность, привели к множеству негативных последствий, которые оказали влияние на все звенья рынка: бизнесменов, инвесторов, граждан финансовую отрасль в целом. Тем не менее введение санкций также определило дальнейшие направления роста российской экономики, указав важность решения ключевых проблем....
In this manuscript, we present a theoretical framework and its numerical implementation to simulate the out-of-equilibrium electron dynamics induced by interaction of ultrashort laser pulses in condensed-matter systems. Our approach is based on evolving real time density matrix system reciprocal space. It considers excitonic nonperturbative light-matter interactions. We show some relevant examples that illustrate efficiency flexibility describe realistic ultrafast spectroscopy experiments....
Abstract Excitons play an essential role in the optical response of two-dimensional materials. These are bound states showing up band gaps many-body systems and conceived as quasiparticles formed by electron a hole. By performing real-time simulations hBN, we show that ultrashort (few-fs) UV pulse can produce coherent superposition excitonic induces oscillatory motion electrons holes between different valleys reciprocal space, leading to sizeable exciton migration real space. We also...
Excitons play a key role in the linear optical response of two-dimensional (2D) materials. However, their nonlinear to intense, nonresonant, low-frequency light is often overlooked as strong fields are expected tear electron-hole pair apart. Using high-harmonic generation spectroscopic tool, we theoretically study formation and response. We show that excitonic contribution prominent excitons remain stable even when driving laser field surpasses strength Coulomb binding pair. demonstrate...
Abstract We present a numerical experiment that demonstrates the possibility to capture topological phase transitions via an x-ray absorption spectroscopy scheme. consider Chern insulator whose is tuned second-order hopping. perform time-dynamics simulations of out-of-equilibrium laser-driven electron motion enables us model realistic attosecond In particular, we use ultrafast scheme with circularly polarized IR pump pulse and probe pulse. A laser-induced dichroism-type spectrum shows clear...
Excitons play a key role in the linear optical response of 2D materials. However, their significance highly nonlinear to intense mid-infrared light has often been overlooked. Using hBN as prototypical example, we theoretically demonstrate that excitons major this process. Specifically, illustrate formation and stability low-frequency fields, where field strengths surpass Coulomb binding electron-hole pair exciton. Additionally, establish parallelism between these results already-known...