Physics Letters A最新文献_第4页

Type-III Dirac fermions in a two-dimensional carbon allotrope with extremely high mechanical strength 二维碳同素异形体中的iii型狄拉克费米子具有极高的机械强度

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-24 DOI: 10.1016/j.physleta.2026.131416

Juan Wei , Fangxiu Xue , Bing Lv , Weiwei Xu , Xue Chen , Jing Chen , Weixiang Kong

引用次数: 0

Investigation of high energy density InN₆ compounds under high pressure 高压力下高能量密度n₆化合物的研究

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-24 DOI: 10.1016/j.physleta.2026.131415

Yongju Dang , Xing Sun , Haizhou Wang, Jinyu Liu, Dandan Zhang, Lili Gao, Miao Zhang

{"title":"Investigation of high energy density InN₆ compounds under high pressure","authors":"Yongju Dang , Xing Sun , Haizhou Wang, Jinyu Liu, Dandan Zhang, Lili Gao, Miao Zhang","doi":"10.1016/j.physleta.2026.131415","DOIUrl":"10.1016/j.physleta.2026.131415","url":null,"abstract":"<div><div>High energy density materials (HEDMs) are crucial in explosives and energy storage fields. The conversion of N-N and N=N bonds to N<img>N is associated with substantial energy release, and polymeric nitrogen stands out as a promising HEDMs candidate owing to its abundant N-N and N=N bonds. However, polymeric nitrogen typically exhibits poor stability under ambient conditions. Applying high pressure and introducing coordinating elements are two proven strategies to enhance its stability. Herein, we explored the InN<sub>6</sub> compounds via crystal structure prediction approach and identify two dynamically stable phases within the pressure range of 0 - 100 GPa. Notably, the ɑ-<em>P</em>-1-InN<sub>6</sub> phase demonstrates exceptional performance, featuring a high volumetric energy density (E<sub>v</sub> = 18.33 kJ/cm<sup>3</sup>), high detonation pressure (P<sub>d</sub> = 264.96 GPa), and superior detonation velocity (V<sub>d</sub> = 34.57 km/s). These outstanding properties endow ɑ-<em>P</em>-1-InN<sub>6</sub> with great application potential in energy storage and explosive manufacturing.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"575 ","pages":"Article 131415"},"PeriodicalIF":2.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Exceptional-point control of the Goos-Hänchen shift in a cavity magnomechanics 空腔中Goos-Hänchen位移的异常点控制

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-27 DOI: 10.1016/j.physleta.2026.131413

Akhtar Munir , Muqaddar Abbas , Zia Uddin , Shi-Hai Dong , Chunfang Wang

引用次数: 0

Versatile terahertz metasurface integrated graphene with dual-polarization asymmetric transmission and reflective dual-broadband polarization manipulation of circularly polarized waves 通用太赫兹超表面集成石墨烯双偏振不对称传输和反射双频偏振操纵圆极化波

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-27 DOI: 10.1016/j.physleta.2026.131397

Dongming Liu , Dexin Xia , Tingting Lv , Jian Han , Bing Yu , Jinhui Shi

{"title":"Versatile terahertz metasurface integrated graphene with dual-polarization asymmetric transmission and reflective dual-broadband polarization manipulation of circularly polarized waves","authors":"Dongming Liu , Dexin Xia , Tingting Lv , Jian Han , Bing Yu , Jinhui Shi","doi":"10.1016/j.physleta.2026.131397","DOIUrl":"10.1016/j.physleta.2026.131397","url":null,"abstract":"<div><div>Integrating switchable and multiple functionalities into a single metasurface is crucial in optical anti-counterfeiting, information multiplexing, and augmented/virtual reality. However, most efforts have focused on functional diversification, making it challenging to balance bandwidth and efficiency. Here, we demonstrate a full-space hybrid metasurface that may implement versatile polarization manipulation by controlling the Fermi level of graphene. The bianisotropic metasurface exhibits high-efficiency dual-broadband asymmetric transmission. Both the preservation and conversion of handedness are simultaneously achieved in adjacent broadband regimes. The underlying physical mechanisms are elucidated through Fabry-Perot-like resonance and near-field distribution. Furthermore, the angular dependence of multiple polarization properties is investigated. The proposed hybrid metasurface enables full-space, high-efficiency and broadband manipulation of circularly polarized waves, facilitating advances in information multiplexing, polarization-sensitive imaging, and encryption.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"575 ","pages":"Article 131397"},"PeriodicalIF":2.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Moiré-enabled continuously tunable beam steering in cascaded all-dielectric terahertz metasurfaces 在级联的全介电太赫兹超表面中，moirsamac驱动的连续可调谐光束导向

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-24 DOI: 10.1016/j.physleta.2026.131414

Qing Zeng , Wenhui Xu , Hang Xu , Hui Li , Jianquan Yao

{"title":"Moiré-enabled continuously tunable beam steering in cascaded all-dielectric terahertz metasurfaces","authors":"Qing Zeng , Wenhui Xu , Hang Xu , Hui Li , Jianquan Yao","doi":"10.1016/j.physleta.2026.131414","DOIUrl":"10.1016/j.physleta.2026.131414","url":null,"abstract":"<div><div>Dynamically reconfigurable metasurfaces for terahertz (THz) wavefront control are highly desirable for advanced communication, imaging, and sensing systems. Here, we propose a cascaded all-dielectric metasurface that enables continuously tunable beam steering through a Moiré phase-superposition mechanism. Two closely stacked 2-bit silicon coding layers generate programmable composite phase profiles under relative mechanical rotation. Counter-rotation produces a one-dimensional effective phase gradient, allowing continuous single-beam steering within ±50° at the design frequency in the <em>yoz</em> plane, whereas only single-layer rotation produces coupled <em>x</em>-<em>y</em> phase gradients, thereby enabling two-dimensional steering with an azimuthal tuning range of ±45°. The simulated steering characteristics exhibit excellent agreement with analytical predictions, with consistently high transmission efficiency and stable main-lobe amplitude across the full tuning range. This compact and reconfigurable cascaded architecture provides an efficient route toward wide-range, continuous, and high-performance THz beam manipulation via simple mechanical actuation.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"575 ","pages":"Article 131414"},"PeriodicalIF":2.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Graphene-engineered WSe2/ReS2 vertical photodiode for self-powered polarization-sensitive broadband photodetection 用于自供电偏振敏感宽带光探测的石墨烯工程WSe2/ReS2垂直光电二极管

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-20 DOI: 10.1016/j.physleta.2026.131377

Zhen Liu , Xiaohui Song , Zinan Ma , Rui He , Suicai Zhang , Leiming Yu , Yurong Jiang , Congxin Xia

{"title":"Graphene-engineered WSe2/ReS2 vertical photodiode for self-powered polarization-sensitive broadband photodetection","authors":"Zhen Liu , Xiaohui Song , Zinan Ma , Rui He , Suicai Zhang , Leiming Yu , Yurong Jiang , Congxin Xia","doi":"10.1016/j.physleta.2026.131377","DOIUrl":"10.1016/j.physleta.2026.131377","url":null,"abstract":"<div><div>Van der Waals vertical heterostructures provide an ideal platform for polarization-sensitive photodetection via tailorable interlayer transitions and anisotropic light-matter interactions. However, conventional metal top electrodes fundamentally constrain device performance by inducing optical shadowing that attenuates polarization-dependent photon flux and introducing interfacial Fermi-level pinning that mask intrinsic material anisotropy. In this study, we propose a graphene-engineered ReS<sub>2</sub>/WSe<sub>2</sub> vertical photodiode that employs graphene as an optically transparent electrode. Utilizing ReS<sub>2</sub>’s in-plane crystalline anisotropy and type-II band alignment with WSe<sub>2</sub>, the device exhibits barrier-free electrical transport with rectification ratios exceeding 10<sup>5</sup> at ±1 V bias while achieving self-powered broadband response with on/off ratios of 10<sup>6</sup> under 405 nm illumination and 10<sup>3</sup> at 1064 nm. It simultaneously delivers a responsivity of 0.72 A W<sup>-1</sup> combined with specific detectivity reaching 2.8 × 10<sup>10</sup> cm Hz<sup>1/2</sup> mW<sup>-1</sup>, accompanied by rapid response times with a 138 μs rise and a 128 μs fall. Notably, it achieves polarization-discriminative operation with a photocurrent anisotropy ratio of 1.82 under 405 nm polarized illumination. This design realizes a high-performance self-driven photodetector that integrates broadband response, polarization sensitivity, and filter-free operation within a single vertical architecture, paving a technological pathway toward compact, high-efficiency multifunctional optoelectronics.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"575 ","pages":"Article 131377"},"PeriodicalIF":2.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 characterization and DFT-based band structure analysis of the zero-dimensional hybrid material (C7H8N3)2CdI4 零维杂化材料（C7H8N3）2CdI4的光学表征及基于dft的能带结构分析

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-22 DOI: 10.1016/j.physleta.2026.131408

Thameur Dammak, Kawthar Abid, Abir Kessentini

{"title":"Optical characterization and DFT-based band structure analysis of the zero-dimensional hybrid material (C7H8N3)2CdI4","authors":"Thameur Dammak, Kawthar Abid, Abir Kessentini","doi":"10.1016/j.physleta.2026.131408","DOIUrl":"10.1016/j.physleta.2026.131408","url":null,"abstract":"<div><div>This work reports on the photophysical properties of organic inorganic naturally self-assembled material bis (2-aminobenzimidazole) tetraiodocadmate (C<sub>7</sub>H<sub>8</sub>N<sub>3</sub>)<sub>2</sub>CdI<sub>4</sub>. The crystal structure consists of isolated CdI<sub>4</sub> tetrahedra surrounded by 2-aminobenzimidazole cations. The two organic and inorganic units building this material are optically active, giving rise to optical properties involving the competition and the interaction of two inorganic and organic luminescent molecules. When excited by ultraviolet light irradiation, this hybrid material exhibits a strong greenish emission centered at 500 nm that can be seen even with the naked eye at room temperature, which can be attributed to the organic molecule. A decrease in temperature leads to the appearance of new emission bands at 550, 575 and 600 nm, which shift the chromaticity toward warmer regions of the visible spectrum. This emission at low temperature is supposed to be due to excitonic recombination involving a resonant energy transfer (RET) mechanism in which CdI<sub>4</sub> tetrahedra act as a donor and (2-aminobenzimidazole) molecule acts as an acceptor. This assignment is supported by theoretical band structure calculations in terms of density functional theory (DFT). The emergence of additional low-temperature emission bands highlights a fascinating competition between Frenkel-type excitons localized on the organic molecule and Wannier-type excitons associated with the CdI<sub>4</sub> tetrahedra, suggesting complex excitonic interactions within the hybrid system.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"575 ","pages":"Article 131408"},"PeriodicalIF":2.6,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146170959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Solitons of the symmetric ϕ4−ϕ2|ϕ|−ϕ2 triple well model 对称的ϕ4−ϕ2| φ |−ϕ2三井模型的孤子

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-15 Epub Date: 2026-01-22 DOI: 10.1016/j.physleta.2026.131392

Avinash Khare , Avadh Saxena

引用次数: 0

The formation of entangled Schrödinger cat-like states in the process of spontaneous parametric down-conversion 自发参量下转换过程中纠缠态Schrödinger猫状态的形成

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-05 Epub Date: 2026-01-18 DOI: 10.1016/j.physleta.2026.131382

Ranjit Singh , Alexander E. Teretenkov

{"title":"The formation of entangled Schrödinger cat-like states in the process of spontaneous parametric down-conversion","authors":"Ranjit Singh , Alexander E. Teretenkov","doi":"10.1016/j.physleta.2026.131382","DOIUrl":"10.1016/j.physleta.2026.131382","url":null,"abstract":"<div><div>We investigate entangled Schrödinger cat-like states (SCLSs) in degenerate and non-degenerate spontaneous parametric down-conversion (SPDC) with a fully quantized, depleted pump. Our fully quantum treatment, visualized via Wigner functions, reveals non-Gaussian features and interference patterns absent in semiclassical models. For degenerate SPDC, we demonstrate significant squeezing (up to 4.04 dB) and robust super-Poissonian statistics in both non-dissipative and dissipative regimes. Extending to non-degenerate SPDC, we confirm that pump quantization also generates non-Gaussian states in all modes and yields a higher-dimensional entanglement structure, evidenced by a larger Schmidt number (<em>K</em><sup>(ND)</sup> ≈ 10.38) compared to the degenerate case (<em>K</em> ≈ 1.93). Our approach captures critical dynamics like energy exchange and phase-dependent evolution. These entangled SCLSs, non-Gaussian states realizable in <em>χ</em><sup>(2)</sup> media at moderate intensities and offering advantages over <em>χ</em><sup>(3)</sup>-based schemes, are promising resources for quantum sensing and information processing.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"574 ","pages":"Article 131382"},"PeriodicalIF":2.6,"publicationDate":"2026-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A hierarchy of quantum control and the dissociation of entanglement from quantum discord 量子控制的层次结构和量子不和谐的纠缠解离

IF 2.6 3区物理与天体物理

Physics Letters A Pub Date : 2026-04-05 Epub Date: 2026-01-16 DOI: 10.1016/j.physleta.2026.131363

F. Aljuaydi , E.K. Jaradat , A. Rahman , A.-B A. Mohamed

{"title":"A hierarchy of quantum control and the dissociation of entanglement from quantum discord","authors":"F. Aljuaydi , E.K. Jaradat , A. Rahman , A.-B A. Mohamed","doi":"10.1016/j.physleta.2026.131363","DOIUrl":"10.1016/j.physleta.2026.131363","url":null,"abstract":"<div><div>We study quantum control of correlations in driven, open multi-qubit systems described by a Hamiltonian with competing Heisenberg, ZZ and DM interactions and a hybrid Ohmic-Markovian environment. We track quantum discord <em>D</em>(<em>ρ</em>), reflected entropy <em>E<sub>R</sub></em>(<em>ρ</em>), and a quantum Pearson coefficient to resolve both global and operator-specific correlations. A functional hierarchy emerges: Hybrid control rapidly generates broadband correlations, DD-Seq robustly preserves them as a selective ZZ engineer, while BB control is highly parameter-sensitive, and in a high-frequency regime the undriven Natural evolution can outperform active protocols. Simulations for chains with <span><math><mrow><mi>N</mi><mo>=</mo><mn>2</mn></mrow></math></span>–6 qubits confirm that this hierarchy and its correlation patterns persist in finite registers. Strong environmental coupling induces a selective decoherence mechanism in which entanglement <em>E<sub>R</sub></em>(<em>ρ</em>) decouples dynamically from overall quantumness <em>D</em>(<em>ρ</em>), suggesting new routes to correlation-selective, fault-tolerant quantum control.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"574 ","pages":"Article 131363"},"PeriodicalIF":2.6,"publicationDate":"2026-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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