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Intertype superconductivity evoked by the interplay of disorder and multiple bands
Frontiers of Physics. 2024. Vol. 19. No. 4. Article 43205.
Nonmagnetic impurity scattering is known to shift up the Ginzburg−Landau parameter k of a superconductor. In this case, when the system is initially in type I, it can change its magnetic response, crossing the intertype domain with k = 1 between the two standard superconductivity types and arriving at type II. In the present work we demonstrate that the impact of disorder can be much more profound in the presence of the multiband structure of the charge carrier states. In particular, when the band diffusivities differ from each other, the intertype domain tends to expand significantly, including points with k>>1 that belong to deep type-II in conventional single-band superconductors. Our finding sheds light on the nontrivial disorder effect and significantly complements earlier results on the enlargement of the intertype domain in clean multiband superconductors.
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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
Seleznev G., Fominov Yakov V., Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 7 Article 074505
Dirty superconducting films with magnetic impurities can exhibit nontrivial behavior in a magnetic field that
polarizes the impurity spins. As predicted by Kharitonov and Feigelman (KF) [JETP Lett. 82, 421 (2005)],
this polarization reduces the exchange scattering rate. Consequently, a parallel magnetic field can enhance
the critical temperature Tc when magnetic-field pair breaking is weak, as realized for ...
Added: October 2, 2026
P. M. Marychev, A. A. Shanenko, Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 7 Article 074509
We investigate the effect of weak interband impurity scattering on the intertype (IT) domain between type-I and type-II superconductivity in diffusive two-band superconductors. Our results show that the significant broadening of the IT domain with increasing band diffusivity ratio, previously established in the absence of interband scattering, persists under weak interband scattering. However, depending on ...
Added: September 7, 2026
Vyacheslav D. Neverov, Kalashnikov A., Andrey V. Krasavin et al., Beilstein Journal of Nanotechnology 2026 Vol. 17 P. 57–62
We present a comprehensive microscopic study of the intermediate mixed state in superconductors of the intertype (IT) regime separating types I and II. Using fully self-consistent Bogoliubov–de Gennes calculations for a lattice model, we analyze few-vortex configurations across the entire temperature range 0 < T < Tc. Our results demonstrate the key features of IT superconductivity, ...
Added: January 8, 2026
Nosov P. A., Andriyakhina E. S., Burmistrov I., Physical Review Letters 2025 Vol. 135 No. 5 Article 056001
We investigate the spatially resolved dynamics of the collective amplitude Schmid-Higgs (SH) mode in disordered s-wave superconductors and fermionic superfluids. By analyzing the analytic structure of the zero-temperature SH susceptibility in the complex frequency plane, we find that, when the coherence length greatly exceeds the mean free path, (i) the SH response at fixed wave vectors ...
Added: September 11, 2025
Vyacheslav D. Neverov, Alexander E. Lukyanov, Andrey V. Krasavin et al., Communications Physics 2025 Vol. 8 Article 320
Strong disorder exerts two opposing effects on a superconducting material. On one hand, it leads to localization of electrons and Cooper pairs, resulting in spatial fragmentation of the condensate state. It enhances the local density of single-particle states, increasing the binding energy of Cooper pairs and the critical temperature at which the condensate state appears. ...
Added: August 20, 2025
P. M. Marychev, E. G. Nikonov, Stolyarov V. S. et al., Physical Review B: Condensed Matter and Materials Physics 2025 Vol. 111 No. 13 Article 134501
A common feature of both single- and multiband superconductors is the presence of a crossover between conventional type I and type II superconductivity through an intertype (IT) domain in the phase diagram of the magnetic response. In diffusive single-band superconductors, this domain is known to be very narrow due to scattering by nonmagnetic impurities. Recently, ...
Added: August 19, 2025
Pashkovskaia V., Васенко А. С., В кн.: Межвузовская научно-техническая конференция студентов, аспирантов и молодых специалистов имени Е.В. Арменского. Москва, 2024.: М.: ООО "Издательский дом Медиа паблишер", 2024.
В последние годы некоторые из наиболее важных тем физики опираются на сверхбыстрые однофотонные детекторы: квантовая запутанность и проблема затухания волновой функции во времени; обнаружение фотонов в диапазоне частот темной энергии и т. д. Этот класс электронных устройств может принести несколько прорывов в будущие научные исследования. Идея состоит в том, чтобы исследовать импульсы напряжения в небольших ...
Added: December 5, 2024
Pashkovskaia V., Васенко А. С., В кн.: III ВСЕРОССИЙСКОЙ МОЛОДЕЖНОЙ ШКОЛЫ-КОНФЕРЕНЦИИ «СОВРЕМЕННЫЕ ФИЗИКА, МАТЕМАТИКА, ЦИФРОВЫЕ И НАНОТЕХНОЛОГИИ В НАУКЕ И ОБРАЗОВАНИИ (ФМЦН-24)», посвященной 70-летию со дня рождения профессора Р.М. Асадуллина.: Издательство БГПУ, 2024.
В последние годы некоторые из наиболее важных тем физики опираются на сверхбыстрые однофотонные детекторы: квантовая запутанность и проблема затухания волновой функции во времени; обнаружение фотонов в диапазоне частот темной энергии и т. д. Этот класс электронных устройств может принести несколько прорывов в будущие научные исследования. Идея состоит в том, чтобы исследовать импульсы напряжения в небольших ...
Added: December 5, 2024
Croitoru M., Buzdin A. I., Condensed Matter 2024 Vol. 9 No. 4 Article 48
The Inverse Faraday Effect (IFE) is a phenomenon that enables non-thermal magnetization in various types of materials through the interaction with circularly polarized light. This study investigates the impact of single defects on the ability of circularly polarized radiation to switch between distinct superconducting current states, when the magnetic flux through a superconducting ring equals ...
Added: November 14, 2024
Croitoru M., Buzdin A. I., Journal of Physics: Condensed Matter 2024 Vol. 37 No. 4 Article 045601
Recently, the use of circularly polarized radiation for on-demand switching between distinct quantum states in a superconducting nanoring exposed to half-quantum magnetic flux has been proposed. However, the effectiveness of this method depends on the system's stability against local variations in the superconducting characteristics of the ring and flux fluctuations. In this study, we utilize ...
Added: November 13, 2024
de Bragança R. H., de Moraes L. M., Romaguera A. R. et al., The Journal of Physical Chemistry Letters 2024 Vol. 15 No. 9 P. 2573–2579
Surface superconductivity, wherein electron pairing occurs at material surfaces or interfaces, has attracted a remarkable amount of attention since its discovery. Recent theoretical predictions have unveiled increased critical temperatures, especially at the surfaces of certain compounds and/or structures. The notion of “surface ordering” has been advanced to elucidate this phenomenon. Employing the framework of self-consistent ...
Added: November 13, 2024
Liu D., Bayan Amer Abzakh, Kazakova E. et al., The Journal of Physical Chemistry Letters 2024 Vol. 15 No. 45 P. 11268–11274
Double perovskite Cs2AgBiBr6 is a promising alternative to lead-based perovskites with excellent stability and attractive optoelectronic properties. However, a relatively large bandgap severely limits its performance in many applications such as solar cells and photodetectors. It has been reported that a random distribution of Ag and Bi atoms in Cs2AgBiBr6 effectively reduces its bandgap without ...
Added: November 1, 2024
Mironyuk M., Политическая наука 2024 № 2 С. 55–79
Attention to the problem of “order” in political science is not a surprise. Neither are the realities designated by the categories of “political order” or the “international order”. The growth of this attention may mean that what is happening in some sphere of life differs from the usual, from previously observed dynamics. As an integral ...
Added: September 3, 2024
Vyacheslav D. Neverov, Alexander E. Lukyanov, Andrey V. Krasavin et al., Condensed Matter 2024 Vol. 9 No. 1 Article 6
The pursuit of enhanced superconducting device performance has historically focused on minimizing disorder in materials. Recent research, however, challenges this conventional wisdom by exploring the unique characteristics of disordered materials. Following the studies, disorder is currently viewed as a design parameter that can be tuned. This shift in the paradigm has sparked an upsurge in ...
Added: May 24, 2024
Vyacheslav D. Neverov, Kalashnikov A., Alexander E. Lukyanov et al., Condensed Matter 2024 Vol. 9 No. 1 Article 8
This work introduces an algorithm designed to solve the Bogoliubov–de Gennes equations of superconductivity theory. What sets this algorithm apart is its remarkable ability to precisely and consistently consider the impact of an external magnetic field, all within the microscopic approach. The computation scheme’s convergence is guaranteed by addressing the Biot–Savart equation for the field ...
Added: May 24, 2024
A. V. Krasavin, A. V. Vagov, A. S. Vasenko et al., JETP Letters 2024 Vol. 119 No. 3 P. 233–250
The combination of strongly coupled Cooper pairs and weak superconducting fluctuations is an important prerequisite for achieving high-temperature superconductivity. The review is devoted to the implementation of this condition in multiband superconductors, in which strongly coupled pairs in the shallow conduction band (the Fermi level is close to the band edge) coexist with ordinary, weakly ...
Added: February 28, 2024