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The ultra-high-TP charge-density wave in the monoclinic phase of NbS3
Journal of Alloys and Compounds. 2021. Vol. 854. Article 157098.
Zybtsev S., Pokrovskii V., Nasretdinova V., Zaitsev-Zotov S., Zupanic E., van Midden M. A., Pai W. W.
We report on high temperature (T) studies of conductivity, s, of the monoclinic phase of NbS3 (NbS3-II). The compound is shown to be stable up to T~550 K. Threshold non-linear conductivity and Shapiro steps on the I e V curves can be seen up to TP0 z 450 e 475 K clearly demonstrating sliding of a charge- density wave (CDW). The feature in s(T) shows that TP0 is the temperature of the formation of this CDW. The charges condensed in this CDW show relatively high density and, at the same time, extremely low mobility. Their mobility appears low in the single-particle states as well, giving a plausible clue to the surprising dielectric-like temperature variation of s above TP0.
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
Timoshuk I., Makhlin Y., Journal of Low Temperature Physics 2024 Vol. 217 P. 167–186
Superconducting heterostructures can host subgap states known as Andreev bound states. In topological superconducting systems, novel zero-energy Andreev states were discovered known as Majorana zero modes. Local Majorana zero modes serve as basic ingredients of topological quantum computations. To simplify manipulations, one can use chiral Majorana-fermion edge transport in gapped two-dimensional systems. Here we demonstrate ...
Added: May 7, 2024
Aladyshkin A. Y., Фраерман А. А., Н. Новгород: Национальный исследовательский Нижегородский государственный университет им. Н.И. Лобачевского, 2024.
В книге затронут широкий круг вопросов физики ограниченных твёрдых тел. Рассмотрено взаимодействие электромагнитного излучения рентгеновского диапазона, «тепловых» нейтронов и электронов с поверхностью твёрдого тела и многослойными структурами. Излагаются основы теории электронных состояний в полуограниченных твёрдых телах и применение метода туннельной спектроскопии для экспериментального изучения этих состояний. Возникновение поверхностной (прикраевой) сверхпроводимости на границах раздела рассматривается как ...
Added: February 1, 2024
Zybtsev n., Pokrovskii V. Y., Nikonov n. et al., JETP Letters 2023 Vol. 117 No. 2 P. 157–163
Three charge density waves (CDWs), two of which are formed above room temperature, are observed in the NbS3 monoclinic phase (NbS3-II). The charge density and mobility in the high-field limit have been determined for each of three CDWs in this work using the synchronization effect of CDWs in high-frequency fields. It has been found that the ...
Added: January 30, 2024
Shilov A. I., Pervakov K. S., KonstantinA. Lyssenko et al., Zeitschrift für anorganische und allgemeine Chemie 2023 Vol. 649 No. 6-7 Article e202200298
We report crystal growth and characterization of 4 new ternary layered bismuthides with compositions KZn2Bi2 (I), RbZn2Bi2 (II), RbCd2Bi2 (III), and CsCd2Bi2 (IV) that belong to the vast 122 family of compounds. Single crystals were grown by self-flux technique and characterized by a combination of powder X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and ...
Added: October 23, 2023
Dmitriy S. Shapiro, Sergey V. Remizov, Lebedev A. et al., Physical Review A: Atomic, Molecular, and Optical physics 2022 Vol. 105 No. 2 Article 023321
A dimerized fermion chain, described by Su-Schrieffer-Heeger (SSH) model, is a well-known example of a one-dimensional system with a nontrivial band topology. An interplay of disorder and topological ordering in the SSH model is of great interest owing to experimental advancements in synthesized quantum simulators. In this paper, we investigate a special sort of a ...
Added: July 26, 2023
Муравьев Н. В., Fershtat L., Далингер И. Л. et al., Crystal Growth & Design 2022 Vol. 22 No. 12 P. 7349–7362
Cocrystal design is an important and well-developed approach in the pharmaceutical industry. Energetic materials can be thought of as unique and challenging objects for cocrystal engineering since abundant explosophoric functionalities prevent exploiting common supramolecular synthons. Screening of cocrystal formation using thermal analysis methods is investigated. A few approaches from the literature are combined in a ...
Added: November 2, 2022
Joás Grossi, Pisarev V., Journal of Physics: Condensed Matter 2022 Vol. 35 No. 1 Article 015401
In this work we use the two-temperature model coupled to molecular dynamics with sinks at the boundaries of the electronic subsystem to study crystal-growth rate in a quasi one-dimensional W crystal into a supercooled melt. The possibility of varying the extension of the electronic grid along with the sinks allows a more realistic description of ...
Added: November 1, 2022
Mikhailenko M., Salavat S. Khasanov, Shestakov A. et al., Chemistry - A European Journal 2022 Vol. 28 No. 10 Article e202104165
Hexaazatrianthracene (HATA) and hexaazatriphenylenehexacarbonitrile {HAT(CN)6} are reduced by metallic iron in the presence of crystal violet (CV+)(Cl−). Anionic ligands are produced, which simultaneously coordinate three FeIICl2 to form (CV+)2{HATA ⋅ (FeIICl2)3}2− ⋅ 3 C6H4Cl2 (1) and (CV+)3{HAT(CN)6. (FeIICl2)3}3− ⋅ 0.5CVCl ⋅ 2.5 C6H4Cl2 (2). High-spin (S=2) FeII atoms in both structures are arranged in equilateral triangles at a distance of 7 Å. An antiferromagnetic exchange is ...
Added: October 22, 2022
Konarev D., Salavat S. Khasano, Mikhailenko M. et al., European Journal of Inorganic Chemistry 2021 Vol. 2021 No. 1 P. 86–92
New methods to prepare anionic HATNA coordination complexes from iron metal or iron carbonyls yielded (CV+)2{HATNA(FeIICl2)3}2− ⋅ 3.5C6H4Cl2, where CV+ is the crystal violet cation. The FeII atoms have a high S=2 spin state and form equilateral triangles. The exchange interaction constant between high-spin FeII is J=−4.6 cm−1 indicating antiferromagnetic coupling of spins as well as a rather ...
Added: October 22, 2022
Faraonov M., Romanenko N., Mikhailenko M. et al., New Journal of Chemistry 2021 Vol. 45 P. 13599–13607
Reduction of organic dye trans-perinone (its abbreviation is perinone) in different experimental conditions allows us to obtain and characterize radical anion {cryptand(K+)}[perinone˙−] (1) and dianion {PPN+}2[perinone2−]·2C6H4Cl2 (2) salts of this dye. The salts have layered structures. Perinone˙− radical anions form π–π stacked dimers in 1 with an effective interaction between them, whereas perinone2− dianions are ...
Added: October 21, 2022
Faraonov M., Mikhailenko M., Romanenko N. et al., Dyes and Pigments 2022 Vol. 201 Article 110183
Vanadyl phthalocyanine {VIVO(Pc2−)}0 was reduced by decamethylchromocene or decamethylcobaltocene (Cp*2MII), and the crystals of the complexes were precipitated by n-hexane. Reduction of this phthalocyanine is centered on the macrocycle providing the formation of the {VIVO(Pc•3−)}− anions containing two paramagnetic VIV and Pc•3− centers with an S = 1/2 spin state. These paramagnetic anions coexist in (Cp*2Cr+){VIVO(Pc•3−)}−·3C6H4Cl2 (1) ...
Added: October 21, 2022
Nazarov D., Andronov M., Aleksey V. Kuzmin et al., Dalton Transactions 2021 Vol. 50 No. 43 P. 15620–15632
The reduction of metal(II) tetraphenylporphyrins, where metal(II) is copper, nickel or iron, has been performed in toluene solution in the presence of a cryptand. Cesium anthracenide was used as a reductant. Crystalline salts {cryptand(Cs+)}2{CuII(TPP4−)}2− (1) and {cryptand(Cs+)}{NiI(TPP2−)}−·C6H5CH3 (2) have been obtained. The two-electron reduction of {CuII(TPP2−)}0 is centered on the macrocycle allowing one to study ...
Added: October 20, 2022
Zybtsev S., Pokrovskii V., Nasretdinova V. et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 99 Article 235155
We report studies of the Seebeck coefficient S of the quasi-one-dimensional compound NbS3, together with the temperature dependence of its specific conductivity σs and heat capacity cp. The monoclinic phase (NbS3-II) is studied over the temperature range T = 80–400 K, which covers two charge density wave (CDW) transitions at TP1 = 360 K (CDW-1) and TP2 = 150 K (CDW-2). The S(T ) curves show features in the vicinities of ...
Added: October 29, 2021
Abdel-Hafiez M., Thiyagarajan R., Majumdar A. et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 99 Article 235126
We report the evolution of charge density wave states under pressure for two NbS3 phases: triclinic (phase I) and monoclinic (phase II) at room temperature. Raman and x-ray diffraction (XRD) techniques are applied. The x-ray studies on the monoclinic phase under pressure show a compression of the lattice at different rates below and above ∼7 GPa but ...
Added: October 29, 2021
Минакова В. Е., Никитина А. М., Zaitsev-Zotov S., Письма в Журнал экспериментальной и теоретической физики 2020 Т. 112 № 6 С. 367–373
Показано, что в ромбическом TaS3 с дефектами закалки при изменении температуры в области ниже температуры пайерлсовского перехода T < TP возникает вынужденная диффузия дефектов, обусловленная их сильным взаимодействием с волной зарядовой плотности (ВЗП). Определены взаимосвязи между концентрацией дефектов закалки n и пороговым полем начала скольжения ВЗП ET , а также сдвигом TP , вызванным внесением дефектов: ET ∝ n и ∆TP ∝ n. Такой набор законов соответствует скоррелированному с ВЗП расположению ...
Added: October 28, 2021
Кон И. А., Зыбцев С. Г., Орлов А. П. et al., Письма в Журнал экспериментальной и теоретической физики 2020 Т. 112 № 2 С. 93–100
Изучено влияние магнитного поля на линейную и нелинейную проводимость квазиодномерного по- луметалла Вейля с волной зарядовой плотности (ВЗП) (TaSe4)2I. Продольное магнетосопротивление во всех известных режимах движения ВЗП (линейная проводимость, крип, скольжение, “сверхпрово- димость Фрелиха”) положительно и не превышает доли процента. Аналогичные магнетотранспортные измерения были выполнены в образцах, профилированных сфокусированными ионными пучками та- ким образом, что ...
Added: October 28, 2021