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Bulletin of the Russian Academy of Sciences: Physics最新文献

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Excited States of Excitons in Monolayers of Transition Metal Dichalcogenides in Reflectance Spectra up to Room Temperature 室温下过渡金属二硫族化合物单分子层激子激发态的反射光谱
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709528
A. S. Brichkin, G. M. Golyshkov, A. V. Chernenko, V. E. Bisti
{"title":"Excited States of Excitons in Monolayers of Transition Metal Dichalcogenides in Reflectance Spectra up to Room Temperature","authors":"A. S. Brichkin,&nbsp;G. M. Golyshkov,&nbsp;A. V. Chernenko,&nbsp;V. E. Bisti","doi":"10.1134/S1062873824709528","DOIUrl":"10.1134/S1062873824709528","url":null,"abstract":"<p>The ground and excited states of A- and B-excitons in monolayers of MoSe<sub>2</sub> and WSe<sub>2</sub> were studied by optical reflectance spectroscopy over a wide range of temperatures up to room temperature. It was shown that excited states are observed in the spectrum even at room temperature. Depending on the selected parameters of the heterostructure, the B-exciton line may be comparable in intensity to the A-exciton line.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"211 - 215"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Response Time of a Silicon-Based Plasmonic Detector of Electromagnetic Radiation 硅基等离子体电磁辐射探测器的响应时间
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709450
A. V. Shchepetilnikov, A. R. Khisameeva, Ya. V. Fedotova, A. A. Dremin, I. V. Kukushkin
{"title":"The Response Time of a Silicon-Based Plasmonic Detector of Electromagnetic Radiation","authors":"A. V. Shchepetilnikov,&nbsp;A. R. Khisameeva,&nbsp;Ya. V. Fedotova,&nbsp;A. A. Dremin,&nbsp;I. V. Kukushkin","doi":"10.1134/S1062873824709450","DOIUrl":"10.1134/S1062873824709450","url":null,"abstract":"<p>The response time of a silicon-based plasmonic detector of electromagnetic radiation was investigated. For this purpose, frequency mixing experiments were carried out in the microwave frequency range. The sensitive element of the detector was embedded in the slots of a matched coplanar waveguide. The response time <span>({{tau }} = 60 pm 10)</span> ps was estimated from the attenuation of the signal amplitude with increasing difference frequency.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"181 - 184"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Gold Nanoparticles as SERS Substrates for MTT Assays 金纳米颗粒作为MTT检测的SERS底物
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709565
V. A. Mushenkov, A. M. Burov, V. I. Kukushkin, E. G. Zavyalova
{"title":"Gold Nanoparticles as SERS Substrates for MTT Assays","authors":"V. A. Mushenkov,&nbsp;A. M. Burov,&nbsp;V. I. Kukushkin,&nbsp;E. G. Zavyalova","doi":"10.1134/S1062873824709565","DOIUrl":"10.1134/S1062873824709565","url":null,"abstract":"<p>Several versions of gold nanoparticles are proposed for detecting formazan formed by the enzymatic reduction of MTT reagent by <i>E. coli</i> enzymes. It is shown that gold nanostars coated with a micellar stabilizer are the most promising SERS substrates for detecting formazan in biological mixtures, reducing the required titer of bacteria by at least an order of magnitude.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"232 - 239"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic Phase Transitions and Collective Effects in MgZnO/ZnO Heterostructures MgZnO/ZnO异质结构中的磁相变和集体效应
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709486
A. S. Koreev, P. S. Berezhnoy, A. B. Van’kov
{"title":"Magnetic Phase Transitions and Collective Effects in MgZnO/ZnO Heterostructures","authors":"A. S. Koreev,&nbsp;P. S. Berezhnoy,&nbsp;A. B. Van’kov","doi":"10.1134/S1062873824709486","DOIUrl":"10.1134/S1062873824709486","url":null,"abstract":"<p>Two-dimensional electron systems implemented in MgZnO/ZnO heterostructures with high interaction parameters were investigated. Inelastic light scattering study detected ferromagnetic transitions and spin textures. The dispersion dependences of key energy parameters were characterized.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"196 - 200"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structure of Currents in the Chernaya Guba of Kandalaksha Bay during Different Phases of the Tidal Cycle 坎达拉沙湾切尔纳亚古坝潮汐循环不同阶段的水流结构
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S106287382470967X
I. N. Ivanova, A. A. Budnikov, A. I. Vasin, K. A. Levonyan
{"title":"Structure of Currents in the Chernaya Guba of Kandalaksha Bay during Different Phases of the Tidal Cycle","authors":"I. N. Ivanova,&nbsp;A. A. Budnikov,&nbsp;A. I. Vasin,&nbsp;K. A. Levonyan","doi":"10.1134/S106287382470967X","DOIUrl":"10.1134/S106287382470967X","url":null,"abstract":"<p>Results are presented from in situ measurements of currents in the Chernaya Guba of Kandalaksha Bay, which is subject to tidal influence, in 2021–2023. Surface and bottom currents in different phases of the tidal cycle are measured using a grid of stations. The area in which the current from Nilmoguba was registered is determined, and in situ measurements are compared to results from modeling bottom currents.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"300 - 304"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement of the Electromagnetic Field in a Resonator in the Sub-Terahertz Frequency Range 次太赫兹谐振器中电磁场的增强
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709425
P. A. Gusikhin, I. V. Kukushkin, V. M. Muravev
{"title":"Enhancement of the Electromagnetic Field in a Resonator in the Sub-Terahertz Frequency Range","authors":"P. A. Gusikhin,&nbsp;I. V. Kukushkin,&nbsp;V. M. Muravev","doi":"10.1134/S1062873824709425","DOIUrl":"10.1134/S1062873824709425","url":null,"abstract":"<p>Numerical modeling was made of planar resonators for the subterahertz frequency range, which are confined by various types of reflectors: Bragg mirrors, grating mirrors, and solid metal mirrors. The dependences of the enhancement of the electric field strength in the resonator on the structure parameters were constructed at normal incidence of an electromagnetic wave on the surface of the resonator. The physical limitations imposed on the enhancement were determined.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"167 - 171"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871265","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Studies of Spin–Phonon Interaction in Magnetic Topological Insulators MnBi2Te4 by Raman Spectroscopy 利用拉曼光谱研究磁性拓扑绝缘体 MnBi2Te4 中的自旋-虹离子相互作用
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709620
A. A. Maksimov, I. I. Tartakovskii, N. A. Abdullaev, N. T. Mamedov
{"title":"Studies of Spin–Phonon Interaction in Magnetic Topological Insulators MnBi2Te4 by Raman Spectroscopy","authors":"A. A. Maksimov,&nbsp;I. I. Tartakovskii,&nbsp;N. A. Abdullaev,&nbsp;N. T. Mamedov","doi":"10.1134/S1062873824709620","DOIUrl":"10.1134/S1062873824709620","url":null,"abstract":"<p>Experimental studies of Raman scattering spectra in single crystals of topological magnetic insulators MnBi<sub>2</sub>Te<sub>4</sub> have been performed in a wide temperature range. The influence of spin–phonon interaction on the studied spectra at temperatures below the antiferromagnetic phase transition temperature is discussed.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"276 - 279"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the Temporal Dynamics of Photoreflectance Signal at the Fractional Filling Factor ν = 1/3 in the Range of Seconds 分数填充因子ν = 1/3秒范围内光反射信号的时间动力学研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709498
A. V. Larionov, L. V. Kulik
{"title":"Study of the Temporal Dynamics of Photoreflectance Signal at the Fractional Filling Factor ν = 1/3 in the Range of Seconds","authors":"A. V. Larionov,&nbsp;L. V. Kulik","doi":"10.1134/S1062873824709498","DOIUrl":"10.1134/S1062873824709498","url":null,"abstract":"<p>The temporal dynamics of the photoreflectance signal was studied at a fractional filling factor of two-dimensional electrons of ν = 1/3 in a GaAs quantum well at liquid helium temperatures of <i>T</i> ∼ 0.6 K. It was demonstrated that, using a modified photon counting technique, it is possible to measure relaxation times of excitations in a Laughlin liquid of the order of 100 s.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"201 - 203"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Luminescence of MoSe2 Monolayers: Effect of Temperature and Pumping MoSe2单层膜的发光：温度和泵送的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709516
V. E. Bisti, A. S. Brichkin, G. M. Golyshkov, A. V. Chernenko
{"title":"Luminescence of MoSe2 Monolayers: Effect of Temperature and Pumping","authors":"V. E. Bisti,&nbsp;A. S. Brichkin,&nbsp;G. M. Golyshkov,&nbsp;A. V. Chernenko","doi":"10.1134/S1062873824709516","DOIUrl":"10.1134/S1062873824709516","url":null,"abstract":"<p>The luminescence of excitons and trions in a MoSe monolayer encapsulated with hBN under nonresonant photoexcitation of electron–hole pairs was studied as a function of temperature and pumping intensity. The shift of luminescence lines and the redistribution of intensities can be explained by the influence of both the Fermi gas of free electrons and localized states of electrons caused by the presence of impurities in boron nitride hBN.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"207 - 210"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Erratum to: 3D Microstructures for Introducing Radiation into Photonic Integrated Circuits 将辐射引入光子集成电路的三维微结构勘误
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873825020017
D. A. Kolymagin, A. I. Prokhodtsov, D. A. Chubich, R. P. Matital, A. V. Kazantseva, D. P. Emelyanov, V. V. Kovalyuk, A. G. Vitukhnovsky, G. N. Goltsman
{"title":"Erratum to: 3D Microstructures for Introducing Radiation into Photonic Integrated Circuits","authors":"D. A. Kolymagin,&nbsp;A. I. Prokhodtsov,&nbsp;D. A. Chubich,&nbsp;R. P. Matital,&nbsp;A. V. Kazantseva,&nbsp;D. P. Emelyanov,&nbsp;V. V. Kovalyuk,&nbsp;A. G. Vitukhnovsky,&nbsp;G. N. Goltsman","doi":"10.1134/S1062873825020017","DOIUrl":"10.1134/S1062873825020017","url":null,"abstract":"","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"317 - 317"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1062873825020017.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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