JETP Letters最新文献_第9页

Comment on “Suppression of the Low-Temperature Increase in the Van der Waals Force by the Anomalous Skin Effect” (JETP Letters 122, 805 (2025)) 对“利用反常集肤效应抑制范德华力的低温升高”的评论（JETP Letters, 122,805 (2025)）

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-05-04 DOI: 10.1134/S0021364026600229

G. V. Dedkov

引用次数: 0

Spatial Profiling of Femtosecond Pulses in an Optical Parametric Amplification System 飞秒脉冲在光参量放大系统中的空间分布

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-05-04 DOI: 10.1134/S0021364025610693

E. A. Stepanov, R. M. Aliev, A. A. Voronin, I. V. Savitsky, A. A. Lanin, A. B. Fedotov

引用次数: 0

Stimulated Scattering of Picosecond Laser Pulses in Two-Photon-Absorbing Metal Nanocolloids: Competition between the Raman and Rayleigh–Mie Scattering 皮秒激光脉冲在双光子吸收金属纳米胶体中的受激散射：拉曼散射和瑞利-米散射的竞争

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-05-04 DOI: 10.1134/S0021364026600011

A. I. Erokhin, I. V. Smetatin

引用次数: 0

T –3-Shift in a Short-Baseline Atomic Interferometer–Gravimeter T - 3-位移短基线原子干涉仪-重力仪

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-05-04 DOI: 10.1134/S002136402660045X

D. N. Kapusta, A. E. Bonert, A. N. Goncharov, V. I. Yudin, K. N. Adamov, A. V. Taichenachev, M. Yu. Basalaev, M. D. Radchenko, O. N. Prudnikov

引用次数: 0

Vertical Ion Transport in a Surface Paul Trap: Escalator and Elevator Approaches 表面保罗阱中的垂直离子传输：自动扶梯和电梯方法

IF 1.1 4区物理与天体物理

JETP Letters Pub Date : 2026-04-27 DOI: 10.1134/S0021364026600941

A. Russkikh, N. Zhadnov

{"title":"Vertical Ion Transport in a Surface Paul Trap: Escalator and Elevator Approaches","authors":"A. Russkikh, N. Zhadnov","doi":"10.1134/S0021364026600941","DOIUrl":"10.1134/S0021364026600941","url":null,"abstract":"Surface ion traps confining and manipulating tens of ion qubits have become the leading platform for quantum processors with high quantum volume. These devices employ the Quantum Charge-Coupled Device (QCCD) architecture, wherein multiple trapping zones are linked by an on-chip transport network that shuttles ion chains, enabling full connectivity through physical ion transport in a plane parallel to the chip surface. The ability to move ions perpendicular to this plane can offer additional advantages, including tuning the laser–ion interaction strength, systematic studies of surface-induced heating mechanisms, and precise alignment with a mode of an external optical cavity. We introduce an “escalator,” i.e., a geometrically optimized transition between trapping zones of different confinement heights, which, to the best of our knowledge, has not been previously proposed. For comparison, we also analyze two configurations of the known “elevator” method, in which the radio-frequency (RF) null is repositioned dynamically via additional electrode voltages. Both approaches enable nearly a twofold change in the ion confinement height above the chip surface.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 9","pages":"645 - 651"},"PeriodicalIF":1.1,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026600941.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292443","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

Josephson Diode and Spin-Valve Effects on the Surface of Altermagnet CrSb 交流磁体CrSb表面的约瑟夫森二极管和自旋阀效应

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-04-14 DOI: 10.1134/S0021364026600667

V. D. Esin, D. Yu. Kazmin, Yu. S. Barash, A. V. Timonina, N. N. Kolesnikov, E. V. Deviatov

{"title":"Josephson Diode and Spin-Valve Effects on the Surface of Altermagnet CrSb","authors":"V. D. Esin, D. Yu. Kazmin, Yu. S. Barash, A. V. Timonina, N. N. Kolesnikov, E. V. Deviatov","doi":"10.1134/S0021364026600667","DOIUrl":"10.1134/S0021364026600667","url":null,"abstract":"We experimentally investigate charge transport in In–CrSb and In–CrSb–In proximity devices, which are formed as junctions between superconducting indium leads and thick single crystal flakes of altermagnet CrSb. For double In–CrSb–In junctions, (dV{text{/}}dI(B)) curves are mirrored in respect to zero field for two magnetic field sweep directions, which is characteristic behavior of a Josephson spin valve. Also, we demonstrate Josephson diode effect by direct measurement of the critical current for two opposite directions in external magnetic field. We interpret these observations as a joint effect of the spin-polarized topological surface states and the altermagnetic spin splitting of the bulk bands in CrSb. For a single In–CrSb interface, the superconducting gap oscillates in magnetic field for both field orientations, which strongly resembles the Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) behavior. FFLO is based on finite-momentum Cooper pairing, therefore, it is fully compatible with the requirements for the Josephson diode effect.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 8","pages":"556 - 565"},"PeriodicalIF":1.3,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026600667.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060988","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

Kitaev–Ising-J1-J2 Model: A Density Matrix Renormalization Group Study Kitaev-Ising-J1-J2模型：密度矩阵重整化群研究

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-04-14 DOI: 10.1134/S0021364026600448

A. V. Kapranov, R. S. Akzyanov

引用次数: 0

Correlations of the Phase Gradients of the Light Wave Propagating in a Turbulent Medium in the Regime of Weak Scintillations 弱闪烁条件下光波在湍流介质中传播的相位梯度的相关性

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-04-14 DOI: 10.1134/S0021364026600692

V. A. Bogachev, I. V. Kolokolov, V. V. Lebedev, A. V. Nemtseva, F. A. Starikov

引用次数: 0

Thermodynamics of Kerr Black Hole: Tsallis–Cirto Composition Law and Entropy Quantization 克尔黑洞热力学：Tsallis-Cirto组成定律和熵量子化

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-04-14 DOI: 10.1134/S0021364026600175

G. E. Volovik

{"title":"Thermodynamics of Kerr Black Hole: Tsallis–Cirto Composition Law and Entropy Quantization","authors":"G. E. Volovik","doi":"10.1134/S0021364026600175","DOIUrl":"10.1134/S0021364026600175","url":null,"abstract":"The processes of splitting and merging of black holes obey the composition law generated by the Tsallis–Cirto (delta = 2) statistics. The same composition law expresses the full entropy of the Reissner–Nordström black hole via the entropies of its outer and inner horizons. Here we apply this composition law to the thermodynamics of the Kerr black hole. As distinct from Reissner–Nordström black hole, where the full entropy depends only on mass M and does not depend on its charge Q, the entropy of Kerr black hole is the sum of contributions from its mass M and angular momentum J, i.e., (S(M,J) = S(M,0) + 4pi sqrt {J(J + 1)} ). Here (S(M,0)) is the entropy of the Schwarzschild black hole. This demonstrates that when the Kerr black hole with (J gg 1) absorbs or emits a massless particle with spin ({{s}_{z}} = pm 1{text{/}}2), its entropy changes by ({text{|}}Delta S{text{|}} = 2pi ). We also considered the quantization of entropy suggested by the toy model, in which the black hole thermodynamics is represented by the ensemble of the Planck-scale black holes—Planckons. The Tsallis–Cirto composition law is also extended to the thermodynamics of Kerr–Newman black hole and Schwarzschild–de Sitter black hole.","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"123 8","pages":"509 - 513"},"PeriodicalIF":1.3,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364026600175.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148060987","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

Magnetic Properties and the Effect of Exchange Bias of the Hysteresis Loop in Iron Borate Single Crystals Doped with Cobalt Ions 掺杂钴离子的硼酸铁单晶的磁性及磁滞回线交换偏置的影响

IF 1.3 4区物理与天体物理

JETP Letters Pub Date : 2026-04-09 DOI: 10.1134/S0021364026600291

N. I. Snegirev, A. V. Bogach, S. S. Starchikov, E. S. Smirnova, O. A. Alekseeva, I. S. Lyubutin

引用次数: 0