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

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Surface-Enhanced Raman Scattering on Grids with Submicrometer Silver Coating 亚微米银涂层网格表面增强拉曼散射
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709656
S. V. Zaitsev
{"title":"Surface-Enhanced Raman Scattering on Grids with Submicrometer Silver Coating","authors":"S. V. Zaitsev","doi":"10.1134/S1062873824709656","DOIUrl":"10.1134/S1062873824709656","url":null,"abstract":"<p>A new method for obtaining effective grid substrates with a nanostructured silver coating by electrodeposition from an electrolyte solution for the study of Raman-active molecules by surface-enhanced Raman scattering (SERS) without a chemically passive separation layer is proposed. The amplification effect is two orders of magnitude higher than amplification in the so-called “hot spots” of metal substrates before silver coating.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"287 - 291"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871214","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
Spatial Variation of Superconducting Order Parameters in Thin Aluminum Films 铝薄膜中超导序参量的空间变化
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709693
D. G. Bezymyannykh, N. G. Pugach, E. A. Sedov, K. Yu. Arutyunov
{"title":"Spatial Variation of Superconducting Order Parameters in Thin Aluminum Films","authors":"D. G. Bezymyannykh,&nbsp;N. G. Pugach,&nbsp;E. A. Sedov,&nbsp;K. Yu. Arutyunov","doi":"10.1134/S1062873824709693","DOIUrl":"10.1134/S1062873824709693","url":null,"abstract":"<p>The oscillations of the order parameter arising due to the spatial quantization of electronic states in a quantum well formed by the boundaries of a thin film of superconducting aluminum were theoretically studied. In such objects, with decreasing thickness, a noticeable increase in the critical temperature and broadening of the superconducting transition are observed. These effects are interpreted as a manifestation of the quantum size effect that affects the density of states of electrons and, hence, other various electronic properties of thin films.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"312 - 316"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871219","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
Oscillations of a Giant Enhancement of Inelastic Light Scattering in Periodic Plasmonic Structures as a Function of Metallic Film Thickness 周期性等离子体结构中非弹性光散射的巨大增强振荡与金属膜厚度的函数关系
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709541
T. D. Rudakov, A. S. Astrakhantseva, S. M. Makarovskaya, V. V. Soloviev, I. V. Kukushkin
{"title":"Oscillations of a Giant Enhancement of Inelastic Light Scattering in Periodic Plasmonic Structures as a Function of Metallic Film Thickness","authors":"T. D. Rudakov,&nbsp;A. S. Astrakhantseva,&nbsp;S. M. Makarovskaya,&nbsp;V. V. Soloviev,&nbsp;I. V. Kukushkin","doi":"10.1134/S1062873824709541","DOIUrl":"10.1134/S1062873824709541","url":null,"abstract":"<p>It is discovered that the effect giant enhancement of the intensity of inelastic light scattering and the considerable dependence of the coefficient enhancement on the thickness of a metal (silver) can be observed in metallic films with periodic holes (the size of a square hole is half the period). It is shown that strong oscillations of the coefficient of enhancement are observed when the thickness of a silver film is changed in the range of 5 to 140 nm, and the amplitude of the oscillations can be more than an order of magnitude. The observed oscillations are explained in terms of the resonant excitation of standing plasmon–polariton waves in metal films, the dispersion of which changes strongly along with the variation of the metal’s thickness.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"221 - 227"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871271","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
Self-Oscillatory and Chaotic States of a Polariton System in a Size-Quantized Cavity Micropillar 尺寸量子化腔微柱中极化子系统的自振荡和混沌态
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709607
N. N. Ipatov, S. S. Gavrilov
{"title":"Self-Oscillatory and Chaotic States of a Polariton System in a Size-Quantized Cavity Micropillar","authors":"N. N. Ipatov,&nbsp;S. S. Gavrilov","doi":"10.1134/S1062873824709607","DOIUrl":"10.1134/S1062873824709607","url":null,"abstract":"<p>A theoretical study is performed of a quasi-two-dimensional exciton–polariton system in a circular microcavity mesa under the conditions of resonant photoexcitation. It is predicted that a series of transitions from stationary to self-oscillatory and further to chaotic states occurs when several size-quantized sublevels are excited. The transition from stationary states to oscillations is accompanied by the rotational symmetry becoming discrete, while in the chaotic region the spatial symmetry disappears completely. Analogous phenomena in a spinor system result in polarization chaos.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"265 - 270"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871250","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
Experimental Studies of the Generation Thresholds of Circularly Polarized Emission from Injection Semiconductor Lasers 注入半导体激光器圆偏振发射产生阈值的实验研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709619
A. A. Maksimov, I. I. Tartakovskii
{"title":"Experimental Studies of the Generation Thresholds of Circularly Polarized Emission from Injection Semiconductor Lasers","authors":"A. A. Maksimov,&nbsp;I. I. Tartakovskii","doi":"10.1134/S1062873824709619","DOIUrl":"10.1134/S1062873824709619","url":null,"abstract":"<p>The dependences of the radiation intensity in various circular polarizations from injection surface-emitting lasers with a vertical chiral microcavity on the excitation current value were experimentally investigated. A sharp increase of the circular polarization degree of the laser emission from small values ∼5% to values &gt;70% was observed at a current exceeding the threshold value. Considering the nonlinear optical properties of laser resonators, model calculations were performed, and the calculation results are in good agreement with the experiment.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"271 - 275"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871203","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
Raman Scattering in Ferromagnetic Ge1 – xMnx Nanowires 铁磁性Ge1 - xMnx纳米线的拉曼散射
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709632
S. V. Zaitsev
{"title":"Raman Scattering in Ferromagnetic Ge1 – xMnx Nanowires","authors":"S. V. Zaitsev","doi":"10.1134/S1062873824709632","DOIUrl":"10.1134/S1062873824709632","url":null,"abstract":"<p>The temperature dependence of Raman scattering is investigated in nanowires of a dilute magnetic semiconductor Ge<sub>0.99</sub>Mn<sub>0.01</sub>. It is found that with increasing temperature a red shift (“softening”) of the optical LO-phonon line occurs at <i>T</i> ∼ 25 K. The observed behavior correlates with the data on the electron paramagnetic resonance of mobile charge carriers and indicates a strong interaction of holes with the phonon and magnetic subsystems.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"280 - 282"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871212","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
Waves and Fine Structures of Physical Variables in a Viscous Stratified Liquid 粘性分层液体中物理变量的波和精细结构
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709668
A. A. Ochirov, U. O. Trifonova
{"title":"Waves and Fine Structures of Physical Variables in a Viscous Stratified Liquid","authors":"A. A. Ochirov,&nbsp;U. O. Trifonova","doi":"10.1134/S1062873824709668","DOIUrl":"10.1134/S1062873824709668","url":null,"abstract":"<p>The surface perturbation in a viscous stratified liquid is investigated in a 2D formulation. Expressions for the dynamics of periodic surface motion and the fine-scale structure of currents are derived. Distributions of the wave and ligament components of density, density gradients, and pressure are constructed. A fine structure accompanying the wave component of the flow in physically measurable variables is identified.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"292 - 299"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871215","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
Reflectance Spectra of Two-Dimensional Excitons in Heterostructures with MoSe2 and WSe2 Monolayers MoSe2和WSe2单层异质结构中二维激子的反射光谱
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S106287382470953X
G. M. Golyshkov, A. S. Brichkin, V. E. Bisti, A. V. Chernenko
{"title":"Reflectance Spectra of Two-Dimensional Excitons in Heterostructures with MoSe2 and WSe2 Monolayers","authors":"G. M. Golyshkov,&nbsp;A. S. Brichkin,&nbsp;V. E. Bisti,&nbsp;A. V. Chernenko","doi":"10.1134/S106287382470953X","DOIUrl":"10.1134/S106287382470953X","url":null,"abstract":"<p>A method of reflectance and transmittance spectroscopy of heterostructures with MoSe<sub>2</sub> and WSe<sub>2</sub> monolayers was developed and mastered. The obtained spectra were compared with microphotoluminescence spectra. It was shown that the trion line, which dominates the microphotoluminescence spectra, is absent in the reflectance spectra. The dependence of the reflectance spectra on the thickness of the encapsulating layers was also presented.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"216 - 220"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871204","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
Studying Plasmaron Dynamics at Filling Factors of 1 to 2 填充因子为1 ~ 2时等离子体动力学的研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709474
P. S. Berezhnoy, A. S. Koreev
{"title":"Studying Plasmaron Dynamics at Filling Factors of 1 to 2","authors":"P. S. Berezhnoy,&nbsp;A. S. Koreev","doi":"10.1134/S1062873824709474","DOIUrl":"10.1134/S1062873824709474","url":null,"abstract":"<p>The authors study the photoluminescence spectra of two-dimensional electron systems in the 1 to 2 range of filling factors at a temperature of 40 mK. Plasmaron peaks and their restructuring in the spectrum are identified at a filling factor of 4/3. Additional peaks referred to as double plasmarons are detected at high pumping powers, indicating complex interactions within the system.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"192 - 195"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871210","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: Effect of Elastic Stresses in FRP Composite on the Frequency Characteristics of Acoustic Emission Signals Recorded by a Fiber-Optic Sensor 玻璃钢复合材料中弹性应力对光纤传感器记录声发射信号频率特性的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873825020042
R. V. Romashko, O. V. Bashkov, I. O. Bashkov, M. N. Bezruk, T. A. Efimov, F. Xiao
{"title":"Erratum to: Effect of Elastic Stresses in FRP Composite on the Frequency Characteristics of Acoustic Emission Signals Recorded by a Fiber-Optic Sensor","authors":"R. V. Romashko,&nbsp;O. V. Bashkov,&nbsp;I. O. Bashkov,&nbsp;M. N. Bezruk,&nbsp;T. A. Efimov,&nbsp;F. Xiao","doi":"10.1134/S1062873825020042","DOIUrl":"10.1134/S1062873825020042","url":null,"abstract":"","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"320 - 320"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1062873825020042.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871223","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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