The European Physical Journal B最新文献

A discrete memristive hyperchaotic map with multiple transient behaviors: design, analysis, and application to DNA image encryption 具有多重瞬态行为的离散记忆超混沌映射：设计、分析和应用于DNA图像加密

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-09-01 DOI: 10.1140/epjb/s10051-026-01236-w

Qiao Wang, Wei Liao, Aihua Shi, Xianming Wu, Haiwei Sang, Gewa Wan

{"title":"A discrete memristive hyperchaotic map with multiple transient behaviors: design, analysis, and application to DNA image encryption","authors":"Qiao Wang, Wei Liao, Aihua Shi, Xianming Wu, Haiwei Sang, Gewa Wan","doi":"10.1140/epjb/s10051-026-01236-w","DOIUrl":"10.1140/epjb/s10051-026-01236-w","url":null,"abstract":"<div><p>Discrete memristive chaotic maps are widely studied for information security applications, but existing low-dimensional designs are generally constrained by limited parameter space and low non-linear complexity, which cannot meet the stringent requirements of modern high-security encryption. This article introduces a fresh high-complexity two-dimensional discrete memristive hyperchaotic map (2D-DMHM), where an absolute-value charge-regulated discrete memristor is integrated with the simplified Logistic and Sine maps to enhance system dynamics. The dynamical characteristics of the suggested map are methodically analyzed, and its physical feasibility is verified through DSP-based hardware realization. A block-based DNA image encryption protocol is additionally formulated based on the suggested map, and security assessments confirm that the proposed scheme attains desirable performance. Findings show that the proposed design possesses promising application potential in realistic image security defense.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"99 9","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148859905","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

Self-organised critical states on hysteresis loop of nanonetworks with random geometric interactions 具有随机几何相互作用的纳米网络滞回环上的自组织临界态

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-26 DOI: 10.1140/epjb/s10051-026-01242-y

Bosiljka Tadić, Raša Pirc

{"title":"Self-organised critical states on hysteresis loop of nanonetworks with random geometric interactions","authors":"Bosiljka Tadić, Raša Pirc","doi":"10.1140/epjb/s10051-026-01242-y","DOIUrl":"10.1140/epjb/s10051-026-01242-y","url":null,"abstract":"<p>Self-assembled nanostructures with spontaneous scale-invariant dynamics are intensively researched as promising technological materials. Represented by Ising spin networks, they exemplify systems with concealed geometric features that enable higher-order interactions and geometric frustration responsible for collective dynamics. Recent investigations of hysteretic response to the driving field in nanonetworks assembled of triangles have revealed self-organised criticality in distinct universality classes associated with pure pairwise and triangle-based interactions. In this study, we investigate the hysteresis dynamics associated with triangle-based interactions of these nanoassemblies, considering concurrent influence of interaction disorder and demagnetising fields, both of which influence the effects of geometric frustration. With extensive simulations for various assembly structures and a range of parameters and adjusted field driving rates, we demonstrate robust spin-activity avalanches associated with the altered hysteresis-loop shape. Specifically, the demagnetising fields increase magnetisation fluctuations at the linear segments of the loop, chiefly affecting the behaviour of large avalanches. Meanwhile, the disorder increases the number of distinct connectivity classes of spins, thus gradually smoothing the hysteresis steps, reducing the cutoff size of avalanches and stabilising the strength of magnetisation fluctuations caused by the demagnetising field. The avalanche distributions are modified in the cutoff range, whilst the exponents in the scaling region remain close to the original model, depending on the driving rate. These findings confirm robust hysteresis-loop self-organised critical dynamics induced solely by higher-order geometric interactions.</p><p>Close-up image of a nanonetwork composed of triangles that have self-assembled under a repulsive potential </p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"99 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-026-01242-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837565","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

Time optimal bang–bang control for dissipative superconducting N-level quantum systems 耗散超导n能级量子系统的时间最优bang-bang控制

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-25 DOI: 10.1140/epjb/s10051-026-01243-x

H. Jirari, H. Rabitz, A. Elamrani

引用次数: 0

A Monte Carlo examination of the numerical values of universal quantities in spatial dimension two 二维空间中普适量数值的蒙特卡罗检验

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-24 DOI: 10.1140/epjb/s10051-026-01227-x

Fu-Jiun Jiang

{"title":"A Monte Carlo examination of the numerical values of universal quantities in spatial dimension two","authors":"Fu-Jiun Jiang","doi":"10.1140/epjb/s10051-026-01227-x","DOIUrl":"10.1140/epjb/s10051-026-01227-x","url":null,"abstract":"<p>By simulating a two-dimensional dimerized spin-1/2 antiferromagnet with the quantum Monte Carlo method, the numerical values of two universal quantities associated with the quantum critical regime (QCR), namely <span>(S(pi ,pi )/left( chi _s Tright) )</span> and <span>(c/left( Txi right) )</span>, are determined. Here <span>(S(pi ,pi ))</span>, <span>(chi _s)</span>, <i>c</i>, <span>(xi ,)</span> and <i>T</i> are the staggered structure factor, the staggered susceptibility, the spin-wave velocity, the correlation length, and the temperature, respectively. Our calculations lead to <span>(S(pi ,pi )/left( chi _s Tright) sim 1.073)</span> and <span>(c/left( Txi right) sim 0.963)</span>, which are in better consistency with the leading theoretical predictions than those including the next-to-leading-order terms. This scenario was also observed for the Wilson ratio <i>W</i> and <span>(chi _u c^2/T)</span> (<span>(chi _u)</span> is the uniform susceptibility) of QCR. The presented outcomes here and those in the literature suggest that it is desirable to conduct a refined analytic calculation to resolve the puzzle of why the inclusion of higher-order terms leads to less accurate predictions for these universal quantities.</p><p><span>(S(pi ,pi ){/}left( chi _s Tright) )</span> as a function of <span>(beta )</span> at <span>(J_2/J_1)</span> = 1.8230 for <span>(L=512)</span>. The solid curve is obtained by using the results of the fits. The horizontal solid and dashed lines represent 1.09 (up to next-to-leading order prediction) and 1.0727 (leading-order prediction), respectively.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"99 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-026-01227-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837642","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

Impact of magnetic order on interfacial electronic structure of α-Fe2O3(0001)@r-TiO2(101) heterostructures 磁序对α-Fe2O3(0001)@r-TiO2（101）异质结构界面电子结构的影响

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-23 DOI: 10.1140/epjb/s10051-026-01222-2

Wala Elsayed, Reza Pamungkas Putra Sukanli, Kenta Hongo, Sahar Abdalla, Omololu Akin-Ojo, Nicola Seriani

{"title":"Impact of magnetic order on interfacial electronic structure of α-Fe2O3(0001)@r-TiO2(101) heterostructures","authors":"Wala Elsayed, Reza Pamungkas Putra Sukanli, Kenta Hongo, Sahar Abdalla, Omololu Akin-Ojo, Nicola Seriani","doi":"10.1140/epjb/s10051-026-01222-2","DOIUrl":"10.1140/epjb/s10051-026-01222-2","url":null,"abstract":"<div><p>Metal oxides heterostructures are important in oxygen electrolysis, and the spin degrees of freedom can play a decisive role in controlling charge dynamics at this interface. Using density functional theory, we investigated the α-Fe<sub>2</sub>O<sub>3</sub>(0001)@r-TiO<sub>2</sub>(101) interface to assess how magnetic ordering affects electronic structure, charge redistribution, and interfacial coupling. In pristine Fe<sub>2</sub>O<sub>3</sub> slabs, ferromagnetic (FM) ordering enhances electron delocalization compared to the antiferromagnetic (AFM) state. Our analysis further shows that coupling TiO<sub>2</sub> with Fe<sub>2</sub>O<sub>3</sub> downshifts the Ti-d- and O-p-band centers, an effect reported to improve catalytic efficiency. Upon TiO<sub>2</sub> coupling, charge transfer occurs predominantly through Fe–O–Ti bridges, inducing spin polarization and broadening the O-p and 3d bands on interfacial O and Ti atoms. These interactions strengthen spin-dependent hybridization and enhance charge delocalization at the FM interface. The magnetic ordering notably alters the Fe<sub>2</sub>O<sub>3</sub>@TiO<sub>2</sub> band alignment, with the FM configuration showing a reduced valence-band offset. The results presented here highlight a promising route for magnetic-state-assisted interface engineering in oxide-based photocatalysts and electrocatalysts.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"99 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837702","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

The cell fluid model with Curie–Weiss interactions: special cases and analytical results 居里-魏斯相互作用的细胞液模型：特殊情况和分析结果

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-19 DOI: 10.1140/epjb/s10051-026-01235-x

O. A. Dobush, M. P. Kozlovskii, I. V. Pylyuk, R. V. Romanik, M. A. Shpot

{"title":"The cell fluid model with Curie–Weiss interactions: special cases and analytical results","authors":"O. A. Dobush, M. P. Kozlovskii, I. V. Pylyuk, R. V. Romanik, M. A. Shpot","doi":"10.1140/epjb/s10051-026-01235-x","DOIUrl":"10.1140/epjb/s10051-026-01235-x","url":null,"abstract":"<p> Inspired by previous extensive numerical studies of a cell fluid model with Curie–Weiss interactions, we concentrate on some analytically tractable special cases in its description. The key ingredient of the model is a competition between global attraction and local repulsion interactions between particles with coupling constants <span>(J_1)</span> and <span>(J_2)</span>, respectively. We provide analytical results in several limiting cases, including the ideal-gas limit <span>(J_1=J_2=0)</span> and the strong-repulsion limit <span>(J_2gg J_1)</span>. For <span>(J_2gg J_1)</span>, a detailed analytical study is presented. We derive explicit expressions for the critical point parameters, the equation of state, and the binodal and spinodal curves in closed form. The equation of state is found to be in full agreement with that of the van der Waals lattice gas, and the order parameter satisfies the standard Curie–Weiss equation. In a neighborhood of the critical point, a Landau expansion is shown to have the same form and symmetry as that of the classical lattice gas within the mean-field approximation. Moreover, based on the explicit knowledge of a few leading terms in the asymptotic expansion of the deformed exponential function governing the physics of the cell model, we extend its validity range to include the marginal case of thermodynamic stability, <span>(J_1=J_2)</span>. In particular, this extension makes a consideration of the ideal-gas limit <span>(J_1=J_2=0)</span> formally legitimate. For the generic marginal case <span>(J_1=J_2ne 0)</span> systematically avoided in the previous works, we present numerical data and phase diagrams that augment their findings for <span>(J_2>J_1)</span>.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"99 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782929","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

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-18 DOI: 10.1140/epjb/s10051-026-01237-9

Tao Yan, Hao Zhang, Shihui Zhu

引用次数: 0

Asymptotic analysis and resonant collision dynamics of lump chains in a (2+1)-dimensional Sawada–Kotera-like equation in fluid mechanics 流体力学中（2+1）维Sawada-Kotera-like方程块链的渐近分析和共振碰撞动力学

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-17 DOI: 10.1140/epjb/s10051-026-01233-z

Muhammad Naveed Rafiq, Muhammad Hamza Rafiq, Haibo Chen

{"title":"Asymptotic analysis and resonant collision dynamics of lump chains in a (2+1)-dimensional Sawada–Kotera-like equation in fluid mechanics","authors":"Muhammad Naveed Rafiq, Muhammad Hamza Rafiq, Haibo Chen","doi":"10.1140/epjb/s10051-026-01233-z","DOIUrl":"10.1140/epjb/s10051-026-01233-z","url":null,"abstract":"<p>A lump chain is a linear structure with periodically distributed lumps. This research employs the Hirota bilinear method to analyze the (2+1)-dimensional Sawada–Kotera-like equation in fluid mechanics, focusing on lump chains and the resonant collisions between them. We begin by deriving two lump and three lump chains with infinite phase shifts. Subsequently, we apply resonance conditions and compute the asymptotic forms of the solutions to derive the resonant interactions between the two and three lump chains. The collisions of lump chains are classified as oblique or parallel depending on the velocities of individual chains. The findings indicate that in oblique collisions, lump chains engage with one another in a Y-shaped arrangement. While in parallel collisions, lump chains have the ability to transmit, split, or absorb another lump chain. Additionally, both partial and complete resonance collisions involving three lump chains are explored. WE adjust the parameter values and resonance conditions to describe the spatial evolution of resonant interactions. The solutions obtained are presented in surface and density plots. These collisions provide new insights into the investigation of resonant interactions among lump chains and localized waves in integrable systems, with applications to fluid mechanics, engineering, and optics.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"99 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782226","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

Enhanced transverse magneto-optical Kerr effect empowered by resonant tunneling effect in a sandwiched structure containing Weyl semimetals 在含Weyl半金属的夹层结构中，共振隧道效应增强了横向磁光克尔效应

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-14 DOI: 10.1140/epjb/s10051-026-01232-0

Cailing Huang, Jiao Zhang, Hailun Li, Feng Wu, Chengping Yin

{"title":"Enhanced transverse magneto-optical Kerr effect empowered by resonant tunneling effect in a sandwiched structure containing Weyl semimetals","authors":"Cailing Huang, Jiao Zhang, Hailun Li, Feng Wu, Chengping Yin","doi":"10.1140/epjb/s10051-026-01232-0","DOIUrl":"10.1140/epjb/s10051-026-01232-0","url":null,"abstract":"<div><p>The transverse magneto-optical Kerr effect (TMOKE) has attracted significant attention owing to its promising potential for designing high-performance magneto-optical devices. In this work, we propose a symmetric sandwiched structure composed of two Weyl semimetal (WSM) layers and a central SiO<sub>2</sub> spacer. By leveraging the resonant tunneling effect, we theoretically demonstrate that the TMOKE can approximately approach its maximum value of 2. The underlying mechanism governed by the resonant tunneling effect is further validated by the simulated magnetic field distributions, which exhibit intense field localization within the spacer under the resonance condition. Additionally, the influences of the axial vector of the WSM, the incident angle, and the thicknesses of the WSM layers on the TMOKE response are systematically investigated. The results show that this peak response of the TMOKE remains robust. By manipulating the axial vector, the optimal TMOKE performance can be recovered even when the layer thickness deviates from the designed value. Our work provides a theoretical approach for designing data storage devices and high-sensitivity sensors.</p><h3>Graphical abstract</h3><p>\u0000The transverse magneto-optical Kerr effect is significantly enhanced in the WSM/SiO<sub>2</sub>/WSM sandwiched structure due to the resonant tunneling effect, as evidenced by the strong localization of the |<i>Hy</i>| field within the SiO<sub>2</sub> interlayer</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"99 8","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751810","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

Layer-dependent Ruppeiner curvature in chiral rhombohedral graphene 手性菱形石墨烯的层依赖Ruppeiner曲率

IF 1.9 4区物理与天体物理

The European Physical Journal B Pub Date : 2026-08-12 DOI: 10.1140/epjb/s10051-026-01234-y

Yakov Bloch

引用次数: 0