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Ферромагнитный фазовый переход в условиях многодолинного заполнения
Письма в Журнал экспериментальной и теоретической физики. 2025. Т. 121. № 7-8. С. 674–680.
Andreeva S., Shchepetilnikov A., Николаев Г. А., Хисамеева А. Р., Орлов О. В., Курбанов Т. М., Федотова Я. В., Дремин А. А., Кукушкин И. В.
Dmitriev A., Kornilov V., Batienkov R., Lecture Notes in Civil Engineering 2026 Vol. 886 P. 249–255
Numerous studies have provided compelling evidence that the probability distribution of avalanche sizes follows a power law, and that 1/f noise is present in the stochastic dynamics of landslides. We present a theoretical explanation of these phenomena within the framework of self-organized criticality theory, proposing a discrete-time model in the form of a sandpile cellular ...
Added: October 13, 2026
Dmitriev A., Shulman I., Lebedev A., Studies in Computational Intelligence 2026 Vol. 1265 P. 266–273
A discrete-time model is presented for the self-organization of the X/Twitter social network to the edge of a phase transition, characterized by avalanche-like propagation of information in the network. The model is based on the analogy between the critical dynamics of the X social network and sandpile cellular automata with Manna rule on the Chung-Lu ...
Added: October 13, 2026
Arutyunov K., Kharitonov I. A., Petrosyants K. O., JETP Letters 2026 Vol. 124 No. 6 P. 1–16
Superconducting properties of metallic micro- and nanowires can be entirely different from those of bulk superconductors. Of particular interest is the nonequilibrium current-induced state of a quasi-one-dimensional superconducting channel. The most interesting phenomenon here is the stepped I–V characteristic, explained by a process known as phase slip center activation. If the origin of such step-like ...
Added: October 13, 2026
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
Махлуф М., Ozhegov R., Elezov M. et al., Фотоника 2026 Vol. 20 No. 6 P. 414–423
This paper compares the ranging precision of direct time-of-flight (dToF) and non-line-of-sight (NLOS) LiDAR architectures, both using a superconducting nanowire single-photon detector (SNSPD). Both systems operate at 1550 nm with a 50 ps pulsed laser and time-correlated single-photon counting (TCSPC). The dToF configuration achieved approximately 100 µm precision at 10 m, while the NLOS configuration achieved 500 µm precision for ...
Added: October 12, 2026
Singapore: Springer, 2026.
This volume presents the Proceedings of the 34th IUPAP Conference on Computational Physics (CCP2023), held in Kobe, Japan on August 4–8, 2023. It offers a collection of peer-reviewed articles that highlight recent developments in computational and simulation research across various areas of physics. Key topics include the use of data science, quantum computing, and machine ...
Added: October 12, 2026
Goncharov A., Chibisov A., Advanced Theory and Simulations 2023 Vol. 12 No. 13 Article 2200816
Designing stable quantum computers with the ability to correct errors responsibly requires a detailed understanding of the physical processes that underlie these devices. In this study, detailed quantum mechanical simulations of the atomic structure, charge distribution of electron density, and distribution and orientation of magnetic and quantum states as a function of applied external pressure ...
Added: October 11, 2026
Chibisov A., Gnidenko A., Chibisova M. et al., FlatChem 2023 Vol. 41 Article 100533
Manufacturing precise quantum computers with small errors in quantum operations, long coherence times, and low power consumption is the most important challenge in modern nanoelectronics. To understand the operating modes of such calculators in detail, both the optimal arrangement of the qubit system within the structure and changes in its magnetic properties must be comprehensively ...
Added: October 11, 2026
Denis K., Запруднов Н. А., Физика и техника полупроводников 2024 Т. 58 № 4 С. 173–178
Рассматривается влияние соотношения вкладов Рашбы и Дрессельхауза в спин-орбитальном взаимодействии на траекторию спина на сфере Блоха, индуцируемую периодическим электрическим полем в двойной квантовой точке в полупроводнике GaAs, при условии электрического дипольного спинового резонанса. Показано, что изменение амплитуды параметра Рашбы, которое может быть осуществлено полем затвора, приводит к изменению плоскости вращения спина в широких пределах. Предсказанный ...
Added: September 6, 2026
Khomitsky D.V., Bastrakova M. V., Pashin D. S., Physical Review B: Condensed Matter and Materials Physics 2025 Vol. 111 No. 08 Article 085427
Coupled spin evolution and tunneling together with the relaxation and decoherence effects are studied for the double quantum dot formed in a semiconductor nanowire and driven by the periodic electric field. Such structure represents a model of the spin and charge subsystems interacting via the strong spin-orbit coupling. It is found that at certain regimes ...
Added: September 6, 2026
Denis K., Запруднов Н. А., Физика твердого тела 2026 Т. 68 № 4 С. 639–648
Рассматривается задача о динамике туннелирования и переворота спина электрона под действием бигармонического электрического поля, приложенного к двойной квантовой точке на основе арсенида галлия с сильным спин-орбитальным взаимодействием. При настройке частоты первой гармоники на зеемановское расщепление в одной точке и частоты второй гармоники на разность потенциальных энергий в соседних точках для определенных амплитуд гармоник наблюдаются два ...
Added: September 6, 2026
Denis K., Лаврухина Е. А., Журнал экспериментальной и теоретической физики 2026 Т. 169 № 6 С. 668–687
Представлены результаты моделирования одноэлектронной динамики в режимах интерференции Ландау-Зенера-Штюкельберга-Майораны и электрического дипольного спинового резонанса для двойной квантовой точки, образованной тремя магнитными барьерами на краю топологического изолятора, сформированного на базе квантовой ямы HgTe/CdHgTe. Выбраны параметры системы, обеспечивающие присутствие четырех дискретных уровней, для которых реализуется связанная динамика спиновой и координатной степеней свободы. Результаты численного моделирования показывают, что ...
Added: September 6, 2026
Nikolaev G. A., Orlov O. V., Andreeva S. et al., Physical Review Applied 2026 Vol. 26 Article 014099
We report the electrical detection of the spin resonance with temporal resolution in a two-dimensional electron system. Spin resonance was excited by pulses of subterahertz radiation characterized by relatively short rise and fall times on the order of 10 ns and was observed as a resonant peak in the high-frequency conductivity of the two-dimensional channel. The ...
Added: July 31, 2026
S. A. Andreeva, Orlov O. V., A. V. Shchepetilnikov et al., Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 6 Article 065420
We investigate the temperature dependence of the pseudospin phase transition at filling factor 𝜈=2 in the quantum Hall regime. Experiments were performed on a high-quality, wide AlAs quantum well, where the pseudospin degree of freedom arises naturally from the near degeneracy and equivalence of the two conduction-band valleys. The anisotropic 𝑔-factor inherent to AlAs enabled independent measurement of ...
Added: July 31, 2026
Zabolotnykh A., Zagorodnev I., Kalyabin D. et al., Письма в Журнал экспериментальной и теоретической физики 2026 Т. 123 № 4 С. 293–299
Теоретически изучен микроволновый отклик двумерной (2D) электронной системы, расположенной на диэлектрической ферромагнитной пленке, которая, в свою очередь, лежит на проводящем металле (затворе), при этом вся система помещена во внешнее постоянное магнитное поле. Найдено, что ферромагнитный резонанс пленки и циклотронный резонанс электронов 2D системы в магнитном поле взаимодействуют, что приводит к их расталкиванию (“антикроссингу”). Обнаружено, что в области антикроссинга происходит ...
Added: February 5, 2026
Sahasrabudhe A., Mikhail A. Prosnikov, Koethe T. et al., Physical Review Research 2024 Vol. 6 No. 2 Article L022005
In the Kitaev magnet 𝛼-RuCl3, the existence of a magnetic-field-induced quantum spin-liquid phase and of anyonic excitations is controversially discussed. We address this elusive, exotic phase via helicity-dependent Raman scattering and analyze the Raman optical activity of excitations as a function of magnetic field and temperature. The hotly debated field regime between 7.5 and 10.5T is characterized by ...
Added: January 26, 2026
Seidov S., Pugach N., Sidorenko A., Beilstein Journal of Nanotechnology 2025 Vol. 16 P. 1668–1676
In this work we consider a spin model composed of a single spin and connected to an infinitely coordinated Ising chain. Theoretical models of this type arise from various fields of theoretical physics, such as theory of open systems, quantum control, and quantum computations. In the thermodynamic limit of an infinite chain, we map the ...
Added: January 12, 2026
Andreeva S., Shchepetilnikov A., Nikolaev G. A. et al., Physical Review B: Condensed Matter and Materials Physics 2025 Vol. 111 No. 23 Article 235413
We examine the quantum phase transitions in a two-dimensional electron system hosted at a high-quality wide AlAs quantum well, with a particular focus on the integer filling factor of 𝜈=2 in the regime of the quantum Hall effect. The observed transitions are induced by the application of external strain to the structure and are manifested ...
Added: May 22, 2025
Власенко Л. С., Fedosov I. S., Письма в Журнал технической физики 2024 Т. 50 № 9 С. 3–5
Electron paramagnetic resonance spectra of centers localized on (111), (110), and (100) oriented surface of silicon wafers were observed and studied using spin dependent microwave photoconductivity. The wafers were not subjected to high temperature oxidization, but oxidized on air at room temperature. The optimal experimental conditions for detection the surface recombination centers, having the sensitivity ...
Added: May 12, 2025
Shchepetilnikov A., Николаев Г. А., Andreeva S. et al., Письма в Журнал экспериментальной и теоретической физики 2024 Т. 119 № 11-12 С. 840–846
A phase transition accompanied by the appearance of a spike in the longitudinal resistance of a two-dimensional electron system has been studied using the electron spin resonance near the filling factor ν = 3 in the ZnO/MgZnO heterojunction. This transition occurs when the tilt angle θ of the magnetic field is increased to some critical ...
Added: April 22, 2025
A. V. Shchepetilnikov, Khisameeva A. R., Nikolaev G. A. et al., Physical Review B: Condensed Matter and Materials Physics 2023 Vol. 107 No. 19 Article 195415
We study the origin of the anomalous spin resonance detected electrically in a strongly correlated two-dimensional electron system. Such resonance reveals itself around nominally nonmagnetic even filling factors 𝜈 of the integer quantum Hall effect and is a consequence of strong electron-electron interactions. We directly demonstrate that while the spin resonance at odd 𝜈 manifests itself as an increase ...
Added: April 17, 2025
A. V. Shchepetilnikov, Khisameeva A. R., S. A. Andreeva et al., Physical Review Letters 2024 Vol. 133 No. 9 Article 096301
We study the effect of the pseudospin ferromagnetism with the aid of an electrically detected electron spin resonance in a wide AlAs quantum well containing a high quality two-dimensional electron system. Here, pseudospin emerges as a two-component degree of freedom, that labels degenerate energy minima in momentum space populated by electrons. The built-in mechanical strain ...
Added: April 15, 2025
S. K. Gotovko, Ivanova A. G., P. S. Kudimkina et al., Physical Review B: Condensed Matter and Materials Physics 2025 Vol. 111 No. 6 Article 064430
We present the study of low-frequency dynamics of LiCu3O3—an antiferromagnet on a strongly depleted square lattice. The crystal structure contains two types of square planes with different Li+→Cu2+ substitution rates (20% and 40%). Recent nuclear magnetic resonance (NMR), magnetization measurements and neutron scattering experiments revealed the occurrence of antiferromagnetic order at 𝑇𝑐1=123K and the change ...
Added: March 3, 2025
Shaginyan V. R., Msezane A. Z., Artamonov S. et al., Advanced Materials & Sustainable Manufacturing 2025 Vol. 2 No. 1 Article 10001
Quantum spin liquids of frustrated magnets are among the most attractive and basic systems in physics. Frustrated magnets exhibit exceptional properties as insulators and metals, making them advanced materials that represent materials for future technologies. Therefore, a reliable theory describing these materials is of great importance. The fermion condensation theory provides an analytical description of ...
Added: February 24, 2025