JETP Letters最新文献_第9页

Local Structure of an Abrikosov Vortex in a Granular Superconductor 粒状超导体中Abrikosov涡旋的局部结构

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-28 DOI: 10.1134/S0021364026601715

A. A. Golubov, M. M. Khapaev, V. S. Stolyarov, M. Yu. Kupriyanov

引用次数: 0

Dynamics of a Charge Density Wave in the Field of an Acoustic Wave 声波场中电荷密度波的动力学

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S0021364026600916

D. Yu. Saltykova, M. V. Nikitin, V. Ya. Pokrovskii, S. G. Zybtsev, V. V. Kolesov, V. V. Kashin, I. E. Kuznetsova, I. A. Nedospasov

{"title":"Dynamics of a Charge Density Wave in the Field of an Acoustic Wave","authors":"D. Yu. Saltykova, M. V. Nikitin, V. Ya. Pokrovskii, S. G. Zybtsev, V. V. Kolesov, V. V. Kashin, I. E. Kuznetsova, I. A. Nedospasov","doi":"10.1134/S0021364026600916","DOIUrl":"10.1134/S0021364026600916","url":null,"abstract":"Whiskers of a quasi-one-dimensional TaS3 conductor with a charge density wave have been fixed (arranged) on the surface of a lithium niobate wafer. Upon excitation of acoustic waves of various types with a wavelength of λ = 3 mm in the wafer, Shapiro steps (ShSWs) are observed in the current–voltage characteristics of the whiskers, indicating synchronization of the sliding of the charge density wave with the acoustic waves. For a sample with a length of L = 740 μm ≈ λ/4, the ShSWs differ significantly in structure and amplitude dependence from the Shapiro steps ShSVs observed when a voltage at the same frequency is applied directly to the sample and reflect a more inhomogeneous character of the sliding of the charge density wave in the synchronization mode. When studying segments of the same sample with a length of L ( ll ) λ, the differences between the ShSWs and ShSVs almost disappear. It has been concluded that the features of ShSWs in long samples are attributed to the spatial inhomogeneity of the high-frequency electric and/or elastic field. The obtained results open up broad possibilities for combining acoustoelectronic devices and quasi-one-dimensional conductors with the charge density wave.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 9","pages":"610 - 618"},"PeriodicalIF":1.1,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026600916.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure and Superconducting Properties of Na1 – δFe1 – xCoxAs Single Crystals Na1 - δFe1 - xCoxAs单晶的微观结构和超导性能

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S0021364026601041

A. Yu. Levakhova, L. A. Morgun, S. Yu. Gavrilkin, V. A. Amelichev, E. O. Rakhmanov, A. V. Sadakov, I. V. Zhuvagin, I. V. Morozov, I. N. Krupatin, M. A. Kirsanova, V. A. Vlasenko, P. N. Degtyarenko, S. A. Kuzmichev, T. E. Kuzmicheva

{"title":"Microstructure and Superconducting Properties of Na1 – δFe1 – xCoxAs Single Crystals","authors":"A. Yu. Levakhova, L. A. Morgun, S. Yu. Gavrilkin, V. A. Amelichev, E. O. Rakhmanov, A. V. Sadakov, I. V. Zhuvagin, I. V. Morozov, I. N. Krupatin, M. A. Kirsanova, V. A. Vlasenko, P. N. Degtyarenko, S. A. Kuzmichev, T. E. Kuzmicheva","doi":"10.1134/S0021364026601041","DOIUrl":"10.1134/S0021364026601041","url":null,"abstract":"We present a comprehensive study of microstructure, magnetotransport properties, and Abrikosov vortex pinning in Na1 – δFe0.955Co0.045As single crystals of overdoped composition with ({{T}_{c}} approx 21{kern 1pt} ) K. Using transmission electron microscopy with atomic resolution, planar defects with structure similar to NaFe2As2 and dimensions in the (ab)-plane about 200–500 nm responsible for sodium deficiency were visualized. It was shown that namely these defects act as effective additional Abrikosov vortex pinning centers, as confirmed by the strong power-law critical current dependence ({{J}_{c}}(H) propto {{H}^{{ - alpha }}}). Temperature dependence of the upper critical field ({{mu }_{0}}H_{{c2}}^{{ab,c}}(T)) and its anisotropy at (T to {{T}_{c}}) between the crystallographic ab- and c-directions is determined.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 9","pages":"635 - 644"},"PeriodicalIF":1.1,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy Characteristics of the Spectra of p, π±, K±, and (bar {p}) Produced with a Transverse Momentum of pT > 1 GeV/c in Proton–Nucleus Collisions at a Beam Energy of 50 GeV 质子-核碰撞在50 GeV束流下，横向动量pT > 1 GeV/c产生的p、π±、K±和(bar {p})能谱的能量特征

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S002136402660117X

N. N. Antonov, I. A. Vasil’ev, V. A. Viktorov, V. A. Gapienko, G. S. Gapienko, A. F. Prudkoglyad, F. N. Novoskoltsev, I. P. Solodovnikov, V. I. Terekhov, M. N. Ukhanov, S. S. Shimanskii

引用次数: 0

Effect of Critical Spin Fluctuations on the Transport and Magnetic Properties of EuFe2As2 Crystals 临界自旋涨落对EuFe2As2晶体输运和磁性能的影响

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S0021364026601053

I. I. Gimazov, D. E. Zhelezniakova, K. S. Pervakov, V. A. Vlasenko, V. M. Pudalov, Yu. I. Talanov

{"title":"Effect of Critical Spin Fluctuations on the Transport and Magnetic Properties of EuFe2As2 Crystals","authors":"I. I. Gimazov, D. E. Zhelezniakova, K. S. Pervakov, V. A. Vlasenko, V. M. Pudalov, Yu. I. Talanov","doi":"10.1134/S0021364026601053","DOIUrl":"10.1134/S0021364026601053","url":null,"abstract":"Critical magnetic fluctuations in EuFe2As2 crystals have been studied using nonresonant microwave absorption. Analysis of measurements of the resistivity and magnetic susceptibility makes it possible to determine the static critical exponents and has demonstrated that the behavior of the system is described by the two-dimensional Ising model. The dynamic critical exponent z = 1.78 has been found from a theoretical analysis of microwave absorption data, taking into account the static exponents and the scaling relation. This value is consistent with the theoretical value obtained within the two-dimensional Ising model for antiferromagnets. The estimated value z for EuFe2As2 corresponds to universality class A, suggesting the influence of the magnetic subsystem of Eu2+ ions on the conductivity of the FeAs layers. The application of a magnetic field leads to the tendency to change the character of the fluctuations and weaken the antiferromagnetic coupling, which corresponds to a change in the universality class of the phase transition from A to C.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 9","pages":"626 - 634"},"PeriodicalIF":1.1,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026601053.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Band Structure with Möbius Topology in a Heterostructure of Topological Insulators 拓扑绝缘子异质结构中Möbius拓扑带结构

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S0021364026600862

Z. Z. Alisultanov

引用次数: 0

Features of “Vacancy” Photoconductivity in Gapless and Narrow-Gap Cadmium–Mercury–Tellurium Structures 无间隙和窄间隙镉汞碲结构中“空位”光电导率的特征

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S0021364025610644

A. V. Ikonnikov, V. V. Rumyantsev, S. N. Chmyr’, M. S. Zholudev, V. Ya. Aleshkin, N. N. Mikhailov, S. A. Dvoretskii, V. I. Gavrilenko

引用次数: 0

Comprehensive Studies of X-Ray Emission from a Laser Plasma at Facilities with Nano-, Pico-, and Femtosecond Laser Pulses 在纳、皮、飞秒激光脉冲装置中激光等离子体x射线发射的综合研究

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S0021364026600606

E. A. Bolkhovitinov, A. A. Rupasov, A. A. Kologrivov, A. M. Chekmarev, K. A. Ivanov, I. N. Tsymbalov, A. B. Savel’ev, I. A. Stuchebryukhov, S. A. Abrosimov, G. Kh. Salakhutdinov, I. A. Busygina

引用次数: 0

On the Possibility of Forming a Plasma–Dust Crystal Near an Atmosphereless Celestial Body 关于在无大气天体附近形成等离子体尘埃晶体的可能性

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-22 DOI: 10.1134/S0021364026600564

S. I. Popel, L. M. Zelenyi

{"title":"On the Possibility of Forming a Plasma–Dust Crystal Near an Atmosphereless Celestial Body","authors":"S. I. Popel, L. M. Zelenyi","doi":"10.1134/S0021364026600564","DOIUrl":"10.1134/S0021364026600564","url":null,"abstract":"The possibility of forming a strongly coupled state and a dusty plasma crystal near an atmosphereless celestial body has been analyzed for the first time. It has been shown that the necessary conditions for this formation are the possibility of sufficiently large dust particles to rise and levitate above the surface of the celestial body, as well as the existence of dust sources that allow for sufficiently high concentrations of dust particles at altitudes where they can levitate. Comets with a sufficiently high dust content in their nuclei can satisfy these conditions. For such comets, dusty plasma regions can form at altitudes of tens and hundreds of meters, where dust particles are present in a stable equilibrium state. It has been shown that the nonideality parameters of the dusty plasma system can reach and even exceed the critical value for the formation of a dusty plasma crystal. Moreover, the parameters of the dusty plasma system usually correspond to the formation of a bcc crystal lattice. Optical imaging techniques for dust particles, an extension of laboratory dusty plasma imaging techniques, could be used to observe dusty plasma crystals in future space missions. The possibility of forming the strongly coupled state and dusty plasma crystal near other celestial bodies has been discussed. It appears that the strongly coupled plasma state could also arise in active asteroids. It is likely impossible to naturally form the strongly coupled state of the dusty plasma in other atmosphereless bodies in the Solar System (ordinary asteroids, the moons of Mars, the Moon, Mercury, etc.).","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 9","pages":"596 - 604"},"PeriodicalIF":1.1,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026600564.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increasing the Modulation Instability Threshold in a Direct-diode-pumped Kerr-lens Mode-locked Ti:Sa Oscillator 增加直接二极管泵浦克尔透镜锁模Ti:Sa振荡器的调制不稳定阈值

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-06-18 DOI: 10.1134/S0021364026606809

K. E. Reznikov, A. O. Mavritskiy, M. N. Esaulkov, A. V. Naumov

引用次数: 0