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Рекордный рост температуры Кюри вплоть до комнатных значений в нецентросимметричном магнетике Mn1−xRhxSi
Письма в Журнал экспериментальной и теоретической физики. 2025. Т. 121. № 2. С. 121–128.
Demishev S. V., Краснорусский В. Н., Оськин А. Е., Боков А. В., Зибров И. П., Саламатин Д. А., Семено А. В., Сидоров В. А., Энкович Э. ., Бражкин В. В., Цвященко А. В.
Magnetic properties of Mn1 xRhxSi solid solutions with non-centrosymmetric structure B20 synthesized at high pressures and temperatures (8 GPa, 1500-1770 K) were studied in detail in a wide temperature range of 2-300 K in a magnetic field of up to 9 T. For compositions from the range 0.15≤x≤0.8, an anomalous increase in the Curie temperature TC by 8.4-11.5 times was detected compared to pure spiral magnet MnSi. It was found that TC increases with rhodium concentration to values of TC (x=0.15)=2444 K, TC (x=0.4)=2995 K and TC (x=0.8)=3346 K. Uniquely high values of the magnetic transition temperature up to room values arise in the disordered ferromagnetic Griffiths phase and may be a consequence of the spin-fluctuation mechanism of magnetic interaction enhancement.
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
Demishev S. V., Доклады Российской академии наук. Физика, технические науки (ранее - Доклады Академии Наук. Физика) 2025 Т. 521 С. 31–38
A simple model of a disordered cluster ferromagnetic phase is proposed, in which magnetic disorder is determined by random local magnetic fields Hl with a power-law distribution function (x < 1), which allows analytically describing the experimentally known magnetic properties of Griffiths ferromagnetic phases from a unified point of view, including the transition from the Curie-Weiss law ...
Added: February 28, 2026
Ya. I. Rodionov, Rozhkov A. V., Beck M. E. et al., Physical Review B: Condensed Matter and Materials Physics 2025 Vol. 112 No. 20 P. –
We theoretically investigate a model with electrons and holes whose Fermi surfaces are perfectly nested. The fermions are assumed to be interacting, both with each other and with the lattice. To suppress inhomogeneous states, a sufficiently strong long-range Coulomb repulsion is included into the model. Using the mean field approximation, one can demonstrate that, in ...
Added: February 18, 2026
Милютин Д. П., Pugach N., В кн.: ТЕЗИСЫ IV Международной конференции «Физика конденсированных состояний» ФКС-2025.: Черноголовка: [б.и.], 2025. С. 111–111.
Сверхпроводниковый эффект близости представляет особый интерес для изучения из-за возможности широкого применения в квантовых технологиях. Гетероструктура сверхпроводник-изолятор-нормальный металл (NIS) стала популярной для изучения сверхнизких температур, благодаря эффекту, схожем с эффектом Пельтье.
Теоретически было показано, что возможно достичь температуры 50 мК, стартуя с 300
мК. Однако, эффективному охлаждению мешает подщелевой ток, возникающий в
результате, андреевского отражения. Лучший способ для его ...
Added: September 6, 2025
Marychev P. M., Chen Y., The Journal of Physical Chemistry Letters 2023 Vol. 14 No. 51 P. 11573–11579
In this work, we investigate the intertype (IT) domain in strongly disordered ferromagnetic superconductors with a Curie temperature lower than the superconducting critical temperature. In such unique materials, the coexistence of superconductivity and ferromagnetism allows for the exploration of both unconventional superconductivity and the interplay between magnetism and superconductivity. The study utilizes an extended Ginzburg-Landau ...
Added: December 19, 2023
Vagov A., Tiago T. Saraiva, Arkady A. Shanenko et al., Communications Physics 2023 Vol. 6 Article 284
In many pnictides the superconductivity coexists with ferromagnetism in an accessible range of temperatures and compositions. Recent experiments revealed that when the temperature of magnetic ordering Tm is below the superconducting transition temperature Tc, highly non-trivial physical phenomena occur. In this work we demonstrate the existence of a temperature window, situated between Tm and Tc, where these intrinsically type-II superconductors are ...
Added: October 18, 2023
Golikova T. E., Wolf M. J., Beckmann D. et al., Superconductor Science and Technology 2021 Vol. 34 No. 9 Article 095001
A nonmonotonic dependence of the critical Josephson supercurrent on the injection current
through a normal metal/ferromagnet weak link from a single domain ferromagnetic strip has
been observed experimentally in nanofabricated planar crosslike S-N/F-S Josephson structures.
This behavior is explained by 0–π and π–0 transitions, which can be caused by the suppression
and Zeeman splitting of the induced superconductivity due ...
Added: June 7, 2021
Pugach N., Джепаров Д. И., Гусев Н., [б.и.], 2020.
СБОРНИК ТЕЗИСОВ
МЕЖДУНАРОДНОЙ НАУЧНОЙ КОНФЕРЕНЦИИ
«УФИМСКАЯ ОСЕННЯЯ МАТЕМАТИЧЕСКАЯ ШКОЛА – 2020» ...
Added: December 26, 2020
Zvezdin A., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 100 P. 174427
Magneto-optical spectroscopy in fields up to 30 T reveals anomalies in the equilibrium and ultrafast magnetic properties of the ferrimagnetic rare-earth–transition-metal alloy TbFeCo. In particular, near the magnetization compensation temperature, each of the magnetizations of the antiferromagnetically coupled Tb and FeCo sublattices show triple hysteresis loops. Contrary to state-of-the-art theory, which explains such loops by ...
Added: November 27, 2019
Stroganov P. L., Ya.V. Fominov, Physical Review B: Condensed Matter and Materials Physics 2017 Vol. 96 No. 17 P. 174508-1–174508-13
We consider ballistic SQUIDs with spin filtering inside half-metallic ferromagnetic arms. A singlet Cooper pair
cannot pass through an arm in this case, so the Josephson current is entirely due to the Cooper pair splitting, with
two electrons going to different interferometer arms. In order to elucidate the mechanisms of Josephson transport
due to split Cooper pairs, we ...
Added: November 17, 2017