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Features of the Decay of Rabi Oscillations in a Semiconductor During a Superradiant Phase Transition 半导体超辐射相变过程中拉比振荡衰减的特征
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-04-09 DOI: 10.1134/S0021364025610735
P. P. Vasil’ev
{"title":"Features of the Decay of Rabi Oscillations in a Semiconductor During a Superradiant Phase Transition","authors":"P. P. Vasil’ev","doi":"10.1134/S0021364025610735","DOIUrl":"10.1134/S0021364025610735","url":null,"abstract":"<p>Rabi oscillations in semiconductor heterostructures generating superradiance at room temperature have been studied experimentally and theoretically. An anomalously long oscillation decay time has been observed experimentally in structures with a low-<i>Q</i> cavity. A theoretical model of the dynamics of the coherent interaction of an electron–hole system with an electromagnetic field in such a cavity, which is based on the classical Maxwell–Bloch equations, predicts a decay time more than an order of magnitude shorter than that measured experimentally. It is suggested that one of the possible reasons for this effect may be the presence of quantum feedback arising from two counterpropagating electromagnetic waves, which mediate the interaction of two coherent electron–hole ensembles and lead to their quantum entanglement with the electromagnetic field.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 5","pages":"303 - 309"},"PeriodicalIF":1.3,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364025610735.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636979","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
Reconstruction of Photon Statistics in the Presence of Photodetection Noise 存在光探测噪声的光子统计重建
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-04-09 DOI: 10.1134/S0021364026600163
A. S. Chirkin
{"title":"Reconstruction of Photon Statistics in the Presence of Photodetection Noise","authors":"A. S. Chirkin","doi":"10.1134/S0021364026600163","DOIUrl":"10.1134/S0021364026600163","url":null,"abstract":"<p>An original approach has been developed to extract information on the photon distribution function recorded by the photocount method in the presence of interference. Photon statistics reconstruction has been studied in the presence of two types of interference: dark counts and background radiation. The calculation has been performed using a characteristic function. Correctly reconstructing photon statistics and appropriate experimental conditions have been discussed. The obtained results can be used in measuring photon statistics of low-photon radiation sources and non-classical light fields.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 5","pages":"298 - 302"},"PeriodicalIF":1.3,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026600163.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147636975","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
Erratum to: Anisotropy of the Electron Mobility of Two-Dimensional Biphenylene Structures 二维联苯结构的电子迁移率各向异性的勘误
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S0021364026040016
V. L. Katkov, V. A. Osipov
{"title":"Erratum to: Anisotropy of the Electron Mobility of Two-Dimensional Biphenylene Structures","authors":"V. L. Katkov,&nbsp;V. A. Osipov","doi":"10.1134/S0021364026040016","DOIUrl":"10.1134/S0021364026040016","url":null,"abstract":"","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"286 - 286"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561916","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
Subdomain Structure in a Single Crystal of the Magnetic Topological Insulator MnSb2Te4 磁性拓扑绝缘体MnSb2Te4单晶中的子畴结构
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S002136402561019X
V. A. Tyutvinov, M. S. Sidelnikov, N. A. Abdullayev, Z. S. Aliev, I. R. Amiraslanov, N. T. Mamedov, V. N. Zverev, L. Ya. Vinnikov
{"title":"Subdomain Structure in a Single Crystal of the Magnetic Topological Insulator MnSb2Te4","authors":"V. A. Tyutvinov,&nbsp;M. S. Sidelnikov,&nbsp;N. A. Abdullayev,&nbsp;Z. S. Aliev,&nbsp;I. R. Amiraslanov,&nbsp;N. T. Mamedov,&nbsp;V. N. Zverev,&nbsp;L. Ya. Vinnikov","doi":"10.1134/S002136402561019X","DOIUrl":"10.1134/S002136402561019X","url":null,"abstract":"<p>The domain structure of a MnSb<sub>2</sub>Te<sub>4</sub> single crystal with a Curie temperature of <i>T</i><sub>C</sub> ≈ 45 K has been studied using the high-resolution Bitter decoration technique. Magnetotransport measurements have confirmed soft ferromagnetic ordering with a coercive field of about 100 Oe. The formation of a hierarchical domain structure characterized by two distinct spatial scales has been revealed. These results indicate the existence of weakly magnetically coupled surface and bulk subsystems. The observed subdomain structure can be attributed to the formation of a ferromagnetic barrier due to an inhomogeneous distribution of Mn<sub>Sb</sub> antisite defects with an additional contribution from symmetry breaking in the near-surface layer.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"265 - 270"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S002136402561019X.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561919","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
Hybridization of Ferromagnetic and Cyclotron Resonances in a Two-Dimensional Electron System on a Ferromagnetic Film 铁磁薄膜上二维电子系统中铁磁和回旋共振的杂化
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S0021364025610024
A. A. Zabolotnykh, I. V. Zagorodnev, A. A. Matveev, D. A. Rodionov, O. Yu. Arkhipova, D. V. Kalyabin, A. R. Safin, S. A. Nikitov
{"title":"Hybridization of Ferromagnetic and Cyclotron Resonances in a Two-Dimensional Electron System on a Ferromagnetic Film","authors":"A. A. Zabolotnykh,&nbsp;I. V. Zagorodnev,&nbsp;A. A. Matveev,&nbsp;D. A. Rodionov,&nbsp;O. Yu. Arkhipova,&nbsp;D. V. Kalyabin,&nbsp;A. R. Safin,&nbsp;S. A. Nikitov","doi":"10.1134/S0021364025610024","DOIUrl":"10.1134/S0021364025610024","url":null,"abstract":"<p>The microwave response of a two-dimensional (2D) electron system located on a dielectric ferromagnetic film, which in turn lies on a conducting metal (gate), has been theoretically studied. The entire system has been placed in an external static magnetic field. It has been found that the ferromagnetic resonance of the film and the cyclotron resonance of the electrons of the 2D system interact in the magnetic field, leading to their repulsion (“anticrossing”). It has been revealed that the anticrossing region is characterized not only by the modification of resonance frequencies compared to the cyclotron resonance in the 2D system without the ferromagnetic substrate and the ferromagnetic resonance in the film without the 2D system, but also by a strong change in the resonance linewidths.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"271 - 276"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561920","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
Effect of Quantum Interference of Probabilities of Resonant Magnetic Dipole and Electric Quadrupole Transitions in EPR Spectroscopy of 63Cu2+ Impurity Ions in BaF2 BaF2中63Cu2+杂质离子EPR谱中共振磁偶极子和电四极子跃迁概率的量子干涉影响
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S0021364025610498
R. B. Zaripov, V. F. Tarasov, V. A. Ulanov
{"title":"Effect of Quantum Interference of Probabilities of Resonant Magnetic Dipole and Electric Quadrupole Transitions in EPR Spectroscopy of 63Cu2+ Impurity Ions in BaF2","authors":"R. B. Zaripov,&nbsp;V. F. Tarasov,&nbsp;V. A. Ulanov","doi":"10.1134/S0021364025610498","DOIUrl":"10.1134/S0021364025610498","url":null,"abstract":"<p>In the electron paramagnetic resonance spectra of single copper impurity ions and their dimer associates in a BaF<sub>2</sub> single crystal, an anomalous change in the relative amplitude of the resonance lines has been detected upon changing the orientation of the external magnetic field relative to the crystallographic axes. This effect is presumably attributed to quantum interference between the probability amplitudes of magnetic dipole and electric quadrupole resonant transitions simultaneously excited between the electron spin states of a dimer associate.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"251 - 256"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561923","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
Optical Bistability of Quantum Confined Modes in a Two-Dimensional Exciton–Polariton System 二维激子-极化子系统中量子受限模的光学双稳定性
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S0021364025610346
A. A. Demenev, N. N. Ipatov, V. D. Kulakovskii, S. S. Gavrilov
{"title":"Optical Bistability of Quantum Confined Modes in a Two-Dimensional Exciton–Polariton System","authors":"A. A. Demenev,&nbsp;N. N. Ipatov,&nbsp;V. D. Kulakovskii,&nbsp;S. S. Gavrilov","doi":"10.1134/S0021364025610346","DOIUrl":"10.1134/S0021364025610346","url":null,"abstract":"<p>Exciton polaritons in a planar quantum well excited by a normally incident resonant light wave have been considered. Due to the nonlinearity caused by interparticle interactions, the optical response of a laterally homogeneous polariton system is bistable. It has been found that additional stability branches, characterized by different field distributions, can arise even in an effectively spinless system in the case where polariton motion in the quantum well plane is bounded by potential barriers. Fast and well controlled transitions between these branches are possible upon varying the frequency or amplitude of the incident wave. Such transitions have been experimentally demonstrated in a high-<i>Q</i> GaAs microcavity with a 60-μm square mesa.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"244 - 250"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364025610346.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561917","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
Odd Viscosity and Anomalous Hall Effect in Two Dimensional Systems with Smooth Disorder 光滑无序二维系统中的奇黏度和反常霍尔效应
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S0021364025610279
D. S. Zohrabyan, M. M. Glazov
{"title":"Odd Viscosity and Anomalous Hall Effect in Two Dimensional Systems with Smooth Disorder","authors":"D. S. Zohrabyan,&nbsp;M. M. Glazov","doi":"10.1134/S0021364025610279","DOIUrl":"10.1134/S0021364025610279","url":null,"abstract":"<p>A microscopic theory of odd viscosity in two-dimensional electron systems with smooth disorder and spin–orbit interaction is developed. It is shown that spin–orbit scattering in presence of spin polarization induced by magnetic field gives rise to an off-diagonal component of the viscosity tensor. Hydrodynamic equations for spin and electric currents are derived for electrons interacting with smooth disorder. The contribution of odd viscosity to the anomalous Hall effect is calculated.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"257 - 264"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364025610279.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561921","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
Dissipative van der Waals and Mirror Interaction of keV Atoms with the Metal Surface at Grazing Reflections 掠射反射下keV原子与金属表面的耗散范德华和镜像相互作用
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S0021364025610632
G. V. Dedkov
{"title":"Dissipative van der Waals and Mirror Interaction of keV Atoms with the Metal Surface at Grazing Reflections","authors":"G. V. Dedkov","doi":"10.1134/S0021364025610632","DOIUrl":"10.1134/S0021364025610632","url":null,"abstract":"<p>The energy losses of keV atomic beams at grazing reflections from an amorphous metal surface are studied. Expressions for various components of these losses, including dissipative van der Waals, specular electrodynamic, and inelastic electronic interactions have been obtained. Calculations of the grazing reflection of sodium and potassium atoms from the aluminum surface show that the dissipative van der Waals component of energy losses can dominate or be quite noticeable at transverse energies of 0.5–2 eV.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"238 - 243"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561922","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
Effect of Chirp and External Focusing on the Spectrally Isolated Raman Component During Filamentation in Air 啁啾和外聚焦对空气中成丝过程中光谱隔离拉曼分量的影响
IF 1.3 4区 物理与天体物理
JETP Letters Pub Date : 2026-03-30 DOI: 10.1134/S0021364025610620
D. V. Pushkarev, D. S. Uryupina, E. V. Mitina, R. V. Volkov, A. A. Konovko, A. B. Savel’ev
{"title":"Effect of Chirp and External Focusing on the Spectrally Isolated Raman Component During Filamentation in Air","authors":"D. V. Pushkarev,&nbsp;D. S. Uryupina,&nbsp;E. V. Mitina,&nbsp;R. V. Volkov,&nbsp;A. A. Konovko,&nbsp;A. B. Savel’ev","doi":"10.1134/S0021364025610620","DOIUrl":"10.1134/S0021364025610620","url":null,"abstract":"<p>Spectrally isolated Raman component produced in filamentation of a near-infrared femtosecond laser pulse in air has been studied experimentally. The effect of laser pulse chirp and geometrical focusing on the Raman component formation are detailed in our study. Qualitative transformation of the frequency-angular spectra with the chirped laser pulse duration and the chirp sign has been found. The optimum conversion of the laser pulse into the Raman component reaches 25% for the loosely focused (numerical aperture <i>NA</i> = 0.002) and slightly negatively chirped laser pulse.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 4","pages":"231 - 237"},"PeriodicalIF":1.3,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364025610620.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561918","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
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