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Ge-Sb-Te based metasurface with angle-tunable switchable response in the telecom bands
Physical Review B: Condensed Matter and Materials Physics. 2023. Vol. 108. No. 8. Article 085127.
Solomonov A. I., Bochkarev M. E., Pavlov S. I., Lazarenko P. I., V. V. Kovalyuk, A. D. Golikov, G. N. Goltsman, Kozyukhin S. A., Dyakov S. A., Rybin M. V., Pevtsov A. B.
Metasurfaces based on phase change materials are widely used for the controllable on-demand modification
of properties of a device at the postfabrication stage. We report the fabrication of a switchable Ge-Sb-Te (GST)-based metasurface with a submicron period by magnetron sputtering with electron beam lithography postprocessing. We provide theoretical and experimentally measured angle-resolved reflection spectra of such metasurfaces. In these spectra, we observe magnetic dipole resonance features, which significantly differ for two different GST states, and Rayleigh anomalies, whose spectral position remains unchanged during the phase transition. We demonstrate the optical response of these metasurfaces to be strongly modulated under GST phase transition in the telecom wavelength range.
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
Seliverstov S.V., Svaytodukh S. S., Kozhukhovsky A. et al., Optical Materials 2025 Vol. 167 Article 117216
The use of chalcogenide semiconductor compounds, in particular the Ge–Sb–Te (GST) material with phase memory, can significantly expand the capabilities of currently developed integrated terahertz (THz) photonic integrated circuits. In this paper we report on the measured value of the absorption contrast between amorphous and crystalline states of GST layer atop of silicon waveguide, which ...
Added: August 13, 2025
Menshikov E., Lazarenko P., Kovalyuk V. et al., ACS Applied Materials & Interfaces 2024 Vol. 16 No. 29 P. 38345–38354
Formation of laser-induced periodic surface structures (LIPSS) is known as a fast and robust method of functionalization of material surfaces. Of particular interest are LIPSS that manifest as periodic modulation of phase state of the material, as it implies reversibility of phase modification that constitute rewritable LIPSS, and recently was demonstrated for chalcogenide phase change ...
Added: February 19, 2025
Tyarin A., Kureev A., Khorov E., Информационные процессы 2023 Т. 23 № 4 С. 488–496
Reconfigurable intelligent surface (RIS) is one of the promising technologies that can increase the bandwidth and coverage area of future wireless networks. At the moment, various prototypes as RIS are presented, which consisting of different elements that can be used for such purposes as signal absorption, capacity increase, phase-shift keying. It leads to a lack ...
Added: January 17, 2024
Lazarenko P., Kovalyuk V., An P. et al., APL Materials 2021 Vol. 9 No. 12 Article 121104
We have studied transmission spectra of a silicon nitride O-ring resonator with a Ge2Sb2Te5 (GST) thin-film cover. We have performed numerical simulations of the transmission, absorption, reflection, and scattering for the GST cells of various thicknesses and lengths and have also measured transmission spectra O-ring resonators for GST cells of various length and phase states. ...
Added: January 30, 2023
Gorbacheva S., Borisova Y., Makarova V. et al., Molecules 2023 Vol. 28 No. 3 Article 949
The low thermal conductivity of paraffin and other organic phase change materials limits their use in thermal energy storage devices. The introduction of components with a high thermal conductivity such as graphene into these materials leads to an increase in their thermal conductivity. In this work, we studied the use of inexpensive carbon fillers containing ...
Added: January 29, 2023
Kulakovskii V., Maksimov A. A., Filatov E. V. et al., Physical Review Applied 2022 Vol. 17 P. 1–6
Engineering the chirality of optical microcavities is a central concept of modern photonics to gain full
control the polarization of the confined electromagnetic mode. Here, we demonstrate a compact source of
coherent radiation based on an electrically driven, chiral semiconductor microcavity. The device is composed
of an AlAs/(Al,Ga)As microcavity containing multiple GaAs quantum wells in the active region
and ...
Added: November 14, 2022
Lazarenko P., Kovalyuk V., An P. et al., Acta Materialia 2022 Vol. 234 Article 117994
In the past years, Ge2Sb2Te5 has been considered a promising functional material for a variety of reconfigurable multilevel devices, including photonic integrated circuits for the post-von Neumann arithmetic processing. However, despite significant advances, it is necessary to reduce the switching energy of Ge2Sb2Te5 for creation of the on-chip low power all-photonic spiking neural networks. The ...
Added: October 25, 2022
Beliaev L., Takayama O., Melentiev P. N. et al., OPTO-ELECTRONIC ADVANCES 2021 Vol. 4 No. 8 Article 210031
Photoluminescence including fluorescence plays a great role in a wide variety of applications from biomedical sensing and imaging to optoelectronics. Therefore, the enhancement and control of photoluminescence has immense impact both on fundamental scientific research and aforementioned applications. Among various nanophotonic schemes and nanostructures to enhance the photoluminescence, we focus on a certain type of ...
Added: October 16, 2021
Alexey A. Sokolik, Kotov O., Yurii E. Lozovik, Physical Review B: Condensed Matter and Materials Physics 2021 Vol. 103 No. 15 P. 155402-1–155402-14
Confined modes at the edge arbitrarily inclined with respect to optical axes of nonmagnetic anisotropic 2D materials are considered. By developing the exact Wiener-Hopf and approximated Fetter methods we studied edge modes dispersions, field and charge density distributions. The 2D layer is described by the Lorentz-type conductivities in one or both directions, which is realistic ...
Added: June 20, 2021
Y G Vainer, Калмыков А. С., Melentiev P. N. et al., Laser Physics Letters 2020 Vol. 17 No. 10 P. 105901
We offer and demonstrate a new type of plasmonic metasurface for sensorics and
surface-enhanced Raman spectroscopy (SERS) spectroscopy, characterized by a wide spectral
range of sensitivity from 450 nm to 850 nm. The metasurface is formed by Ag nanoparticles of
different sizes. The metasurface has clear anisotropy formed by the Ag nanoparticles’
size-dependent plasmonic resonances. The resonant wavelength of ...
Added: January 17, 2021