Physics Letters A最新文献

{"title":"Dynamics of magnetic flux quenching in electron-phonon interaction systems","authors":"Maomao Zhang,&nbsp;Li Zhang,&nbsp;Qiuxia Lu,&nbsp;Xiaojing Liu,&nbsp;Zhong An","doi":"10.1016/j.physleta.2025.130578","DOIUrl":"10.1016/j.physleta.2025.130578","url":null,"abstract":"<div><div>In recent years, the evolution of persistent currents induced by magnetic flux quenching in rings has been extensively investigated. However, the role of electron-phonon (e-ph) interactions in these phenomena has not been fully addressed. In this work, based on the Su-Schrieffer-Heeger (SSH) model coupled with a nonadiabatic evolution method, we compare the current dynamics in systems with and without e-ph interactions. We observe two significant modifications: (i) current oscillations around the stationary value persist, and (ii) transient plateaus emerge during the evolution. The persistent oscillations arised from periodic modulations of the staggered bond order parameter, whereas the transient plateaus correlate with topological phase transitions in the SSH lattice. Moreover, the time-averaged current in systems with e-ph interactions exhibits a modest enhancement compared to the non-interacting case. Finally, we discuss how the current dynamics depends on the magnetic flux quenching rate.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"549 ","pages":"Article 130578"},"PeriodicalIF":2.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878513","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}

{"title":"First-principles study on the structural, mechanical, electronic, and thermodynamic properties in novel Mg-Li compounds","authors":"Yingying Chen ,&nbsp;Feifan Yan ,&nbsp;Wenjin Jiang ,&nbsp;Aijie Mao ,&nbsp;Enci Zuo ,&nbsp;Xi He ,&nbsp;Gang Jiang","doi":"10.1016/j.physleta.2025.130571","DOIUrl":"10.1016/j.physleta.2025.130571","url":null,"abstract":"<div><div>Magnesium-lithium (Mg-Li) alloys are commonly employed in automotive, aerospace, and biomedicine fields due to their ease of casting, high strength-to-weight ratio, and excellent biocompatibility. A structure screening predicted successfully four unexpected potentially stable Mg-Li compounds (Mg₇Li, Mg₁₁Li₅, Mg₉Li₇, and MgLi₇). The stability calculation results reveal that four compounds are thermodynamically, dynamically, and mechanically stable. Especially, Mg₇Li presents excellent mechanical properties owing to the stronger Li-Li covalent bonds, including bulk modulus with 32.33 GPa, shear modulus with 20.17 GPa, and Young's modulus with 50.09 GPa, which provides a strategy for improving mechanical properties of Mg alloys. Furthermore, the Mg₁₁Li₅ and MgLi₇ exhibit lower lattice thermal conductivity with 0.92 W/mK and 0.71 W/mK, showing that they have potential applications in isolation or insulation materials. The findings are anticipated to yield thorough insight into the intrinsic characteristics in Mg-Li system and provide theoretical data to accelerate the development of high-performance Mg alloys.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"550 ","pages":"Article 130571"},"PeriodicalIF":2.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143911999","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}

{"title":"Thermodynamic study of specific black hole inspired by generalized entropy","authors":"Farzan Mushtaq ,&nbsp;Abdul Jawad ,&nbsp;Xia Tiecheng ,&nbsp;M.M. Alam ,&nbsp;Sanjar Shaymatov","doi":"10.1016/j.physleta.2025.130552","DOIUrl":"10.1016/j.physleta.2025.130552","url":null,"abstract":"<div><div>This study examines the thermodynamic features of the Van der Waals black hole within the context of three parameters of entropy. It is discovered that the parameters of black hole, including mass and temperature, deviate from those that are derived with the Boltzmann-Gibbs paradigm. Furthermore, the entropy parameter influences the behavior of the Gibbs free energy by introducing thermodynamic instabilities, whereas the emission rate is mostly affected by entropy parameters at low frequencies. We provide expressions for thermodynamic quantities like pressure, temperature, heat capacity, Gibbs free energy, Helmholtz free energy, and isothermal compressibility. We investigate the phase structure of these solutions by analyzing their heat capacity and Gibbs free energy. This investigation also examines the critical behavior and phase transitions of black hole. Additionally, we observe both local and global stability of black hole in the canonical ensemble for a variety of parameter values. We also investigate the effect of the entropy parameter and the sparsity of Hawking radiation on black hole evaporation.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"548 ","pages":"Article 130552"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865217","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}

{"title":"Noether symmetry approach and its generation of various conserved quantities of two dimensional dynamical system","authors":"M. Usman ,&nbsp;M. Umar Farooq ,&nbsp;Anum Naseem","doi":"10.1016/j.physleta.2025.130561","DOIUrl":"10.1016/j.physleta.2025.130561","url":null,"abstract":"<div><div>In our current research, we employ Noether symmetry approach to generate conserved quantities for a two-dimensional Euler-Lagrange system depicting the dynamics of a simple harmonic oscillator and a simple harmonic oscillator with linear external driving force. By introducing a pair of Lagrangians we have found three novel types of invariant quantities such as Mei conserved quantity, Lie conserved quantity and Noether conserved quantity reminiscent to those previously reported by Fang et al. (2010) <span><span>[1]</span></span> (Phys. Lett. A, 374 (2010) 1806-1811) and further extended by Nucci (2011) <span><span>[2]</span></span> (Phys. Lett. A, 375 (2011) 1375-1377) for the uncoupled system under consideration. Generally, a system of linear second-order Euler-Lagrange equations admits a 15-dimensional algebra of Lie point symmetries amongst which maximum 8 could be Noether symmetries and consequently Noether's theorem assists in computing 8 associated first integrals. Here, however, we have achieved 9 distinct Noether symmetries while 11 distinct associated conserved quantities by introducing two Lagrangians formalism. In these 11 conserved quantities two (Lie conserved quantity and Noether conserved quantity) are induced by one Lagrangian and one (Mei conserved quantity) is induced by other Lagrangian. Interestingly, these three conserved quantities are reminiscent to those presented in <span><span>[1]</span></span> and remaining are similar to those found in <span><span>[2]</span></span>. We have also utilized the conservation laws to obtain the analytical solution of uncoupled system of oscillators. Furthermore, the current study adds further to what already available in the literature along with the physical explanation of the dynamical system under consideration.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"548 ","pages":"Article 130561"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858758","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}

{"title":"Sensitivity determination of band gap of locally resonant phononic crystals based on joint grey correlation analysis","authors":"Peng Xiao ,&nbsp;Linchang Miao ,&nbsp;Haizhong Zheng ,&nbsp;Benben Zhang ,&nbsp;Lijian Lei ,&nbsp;Jing Zhang ,&nbsp;Tianshuang Geng","doi":"10.1016/j.physleta.2025.130586","DOIUrl":"10.1016/j.physleta.2025.130586","url":null,"abstract":"<div><div>The unique low-frequency band gap characteristics of locally resonant phononic crystals (LRPCs) make them have broad application value and prospect in the design of metamaterials for vibration and noise reduction. If the component material parameters and geometric parameters of the LRPCs are reasonably selected, it can open up high-quality low-frequency wide band gap, that is, the opening of the low-frequency locally resonant band gap is influenced by its component material parameters and geometric parameters. However, at present, most of the studies on the factors affecting the band gap of LRPCs are carried out from the qualitative point of view, and there is a lack of quantitative studies on the factors affecting the band gap of LRPCs, which limits the application of LRPCs in engineering, especially in the design of vibration and noise reduction metamaterials. In view of this, this paper quantitatively studies the factors affecting the band gap of LRPCs based on the joint grey correlation analysis method, that is, the sensitivity determination of the local resonance band gap. Firstly, the improved plane-wave expansion method is derived to calculate the band structure of LRPCs. Secondly, based on the theory of grey correlation analysis, the correlation degree of the factors affecting the band gap of the LRPCs are calculated. Finally, the weights of the factors affecting the band gap of the LRPCs are determined by the 9-scale analytic hierarchy process. The results show that the elastic modulus of the wrapper layer has the most significant impact on the local resonance band gap starting frequency, band gap cutoff frequency, and band gap width, followed by the scatterer radius, wrapper layer radius, scatterer density, and Poisson's ratio of the wrapper layer. Among them, the lattice constant, scatterer elastic modulus, scatterer Poisson's ratio, wrapper layer density, matrix density, matrix elastic modulus, and matrix Poisson's ratio have almost no effect on the starting frequency of the local resonance band gap; The elastic modulus of scatterer, Poisson's ratio of scatterer, wrapper layer density, matrix elastic modulus, and matrix Poisson's ratio have almost no effect on the local resonance band gap cutoff frequency and the local resonance band gap width. This paper quantitatively compares the influence of geometric and material parameters of LRPCs on the local resonance band gap, and quantifies the correlation between different influencing factors. The relevant research results of this paper can provide specific references and inspirations for the design and optimization of LRPCs metamaterials, improve their effectiveness in engineering applications, and make the optimization design more efficient.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"549 ","pages":"Article 130586"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878510","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}

{"title":"Observational evidence of bulk viscosity effects in f(R,T) cosmological models","authors":"A. Zhadyranova ,&nbsp;Zh. Kanibekova ,&nbsp;V. Zhumabekova ,&nbsp;M. Koussour ,&nbsp;D. Anshokova ,&nbsp;S. Muminov ,&nbsp;J. Rayimbaev","doi":"10.1016/j.physleta.2025.130560","DOIUrl":"10.1016/j.physleta.2025.130560","url":null,"abstract":"&lt;div&gt;&lt;div&gt;In this study, we explore an &lt;span&gt;&lt;math&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; cosmological model incorporating bulk viscosity, focusing on scenarios where the matter sector is minimally and linearly coupled to the geometry, specifically &lt;span&gt;&lt;math&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;mi&gt;λ&lt;/mi&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;, with &lt;em&gt;λ&lt;/em&gt; as the coupling constant. Two cases of bulk viscosity are examined: Case I with a time-dependent coefficient &lt;span&gt;&lt;math&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mi&gt;H&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt; (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;≠&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/math&gt;&lt;/span&gt;) and Case II with a constant viscosity &lt;span&gt;&lt;math&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; (&lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/math&gt;&lt;/span&gt;). By employing Bayesian methods, including MCMC techniques, we constrain the model parameters &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;H&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, &lt;em&gt;λ&lt;/em&gt;, &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, and &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ζ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; using the Hubble &lt;span&gt;&lt;math&gt;&lt;mi&gt;H&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;z&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; and Pantheon+SH0ES datasets. Our analysis reveals a transition from a decelerating to an accelerating universe driven by bulk viscosity. Case I exhibits a present-day deceleration parameter &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;q&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;0.51&lt;/mn&gt;&lt;/math&gt;&lt;/span&gt;, indicating moderate acceleration, while Case II shows a slightly stronger acceleration with &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;q&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mo&gt;−&lt;/mo&gt;&lt;mn&gt;0.53&lt;/mn&gt;&lt;/math&gt;&lt;/span&gt;. The evolution of the energy density &lt;em&gt;ρ&lt;/em&gt; and effective pressure &lt;span&gt;&lt;math&gt;&lt;mover&gt;&lt;mrow&gt;&lt;mi&gt;p&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;¯&lt;/mo&gt;&lt;/mrow&gt;&lt;/mover&gt;&lt;/math&gt;&lt;/span&gt; aligns with standard cosmological expectations, with positive energy density and consistently negative effective pressure, characteristic of DE. Furthermore, the effective equation of state parameter &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;ω&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;e&lt;/mi&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; and the &lt;span&gt;&lt;math&gt;&lt;mi&gt;O&lt;/mi&gt;&lt;mi&gt;m&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;z&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; diagnostic suggest quintessence-like behavior, with the violation of the strong energy condition supporting the observed accelerated expansion of the universe. These findings suggest that the &lt;span&gt;&lt;math&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mo&gt;,&lt;/mo&gt;&lt;mi&gt;T&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/math&gt;&lt;/span&gt; model with bulk viscosity offers a consistent and plausible description of late-time cosmic ac","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"548 ","pages":"Article 130560"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865148","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}

{"title":"Tightening the entropic uncertainty relations with quantum memory in a multipartite scenario","authors":"Cong Xu ,&nbsp;Qing-Hua Zhang ,&nbsp;Tao Li ,&nbsp;Shao-Ming Fei","doi":"10.1016/j.physleta.2025.130570","DOIUrl":"10.1016/j.physleta.2025.130570","url":null,"abstract":"<div><div>The quantum uncertainty principle stands as a cornerstone and a distinctive feature of quantum mechanics, setting it apart from classical mechanics. We introduce a tripartite quantum-memory-assisted entropic uncertainty relation, and extend the relation to encompass multiple measurements conducted within multipartite systems. The related lower bounds are shown to be tighter than those formulated by Zhang et al. [Phys. Rev. A 108, 012211 (2023)]. Additionally, we present generalized quantum-memory-assisted entropic uncertainty relations (QMA-EURs) tailored for arbitrary positive-operator-valued measures (POVMs). Finally, we demonstrate the applications of our results to both the relative entropy of unilateral coherence and the quantum key distribution protocols.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"549 ","pages":"Article 130570"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868875","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}

{"title":"New multi-soliton, Y-type, X-type, and interaction physical phenomena to a generalized breaking soliton system","authors":"Hajar F. Ismael","doi":"10.1016/j.physleta.2025.130562","DOIUrl":"10.1016/j.physleta.2025.130562","url":null,"abstract":"<div><div>Based on the Hirota bilinear method, a generalized breaking soliton system is under investigation, which describes the interaction phenomena of the Riemann wave with a long wave through two spatial variables in nonlinear media. Some explicit exact solutions for a (3+1)-dimensional generalized breaking soliton system, including multi-soliton, Y-type, X-type, and multi-lump waves, and three structures of interaction solutions between them are explored. Also, the long-wave method is applied to N-soliton waves to derive M-lump waves. To illustrate their dynamic characteristics, 3-dimensional plots and contour plots are provided. We expect that the wave propagation presented in this research may be used to investigate exact wave solutions to other nonlinear integro-differential equations.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"549 ","pages":"Article 130562"},"PeriodicalIF":2.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868874","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}

{"title":"Highly sensitive photonic crystal optic fiber with annular stomatal arrangement for cervical cancer cell detection","authors":"Shuohan Liu ,&nbsp;Hua Yang ,&nbsp;Chaojun Tang ,&nbsp;Zao Yi ,&nbsp;Yougen Yi ,&nbsp;Junqiao Wang ,&nbsp;Boxun Li","doi":"10.1016/j.physleta.2025.130574","DOIUrl":"10.1016/j.physleta.2025.130574","url":null,"abstract":"<div><div>The photonic crystal fiber sensor designed in this paper uses the surface plasmon resonance phenomenon as its basic operating principle. A metal layer is coated over the outside of the sensor to achieve surface plasmon resonance coupling. Finite element analysis is employed to work out design parameters and assess performance. Here, key design parameters such as the gold layer’s thickness and the stomatal diameter are analyzed to identify the optimal design configuration; And defined the tolerance coefficient of design parameters in the actual production process. Next, the performance of the sensor was analyzed. The refractive index was measured in the scope of 1.370 to 1.395 with an interval of 0.005, the sensor demonstrated outstanding sensing capabilities, achieved wavelength sensitivity of 36,000 nm/RIU, a peak amplitude sensitivity of 142.8 RIU^-1, and a resolution of 2.7 × 10^–6 RIU. In the end, the sensor was used to identify the existence of cervical cancer cells and manifested high wavelength sensitivity, which confirms its excellent biosensing capability. Thanks to its uncomplicated structure, acute sensitivity, and exceptional resolution, the sensor devised in this study is highly suitable for a vast array of applications in chemical and biomedical detection.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"548 ","pages":"Article 130574"},"PeriodicalIF":2.3,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868663","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}

{"title":"Nonvolatile ferroelectric manipulation of magnetoelectric coupling and band alignment in two-dimensional CrI3/In2Se3 multiferroic van der Waals heterostructures","authors":"Tao You ,&nbsp;Mingjun Yang ,&nbsp;Dan Cao ,&nbsp;Meng Li ,&nbsp;Lingang Yang ,&nbsp;Jianfeng Wang ,&nbsp;Zhiwei Jiao ,&nbsp;Haibo Shu","doi":"10.1016/j.physleta.2025.130569","DOIUrl":"10.1016/j.physleta.2025.130569","url":null,"abstract":"<div><div>The coexistence of magnetic and ferroelectric properties in two-dimensional (2D) van der Waals (vdW) multiferroic heterostructures have attracted increasing interest in the development of multifunctional devices. Here, we report a new strategy to tune the magnetic ordering and electronic properties of 2D CrI₃/In₂Se₃ multiferroic heterostructures by the ferroelectric polarization based on the density-functional theory calculations. Our results demonstrate that the upward polarization state contributes to the enhancement of ferromagnetic coupling and Curie temperature of CrI₃ layer in the heterostructures. Moreover, the reverse of ferroelectric polarization can drive the transition from the ferromagnetic coupling to antiferromagnetic one in the heterostructures with a bilayer CrI₃, while the intralayer magnetic ordering is still ferromagnetic. Moreover, the ferroelectric polarization of In₂Se₃ layer creates a non-volatile build-in electric field that can modulate the band alignment and carrier spatial distribution. These findings suggest a large potential of 2D multiferroic heterostructures in data storage and spintronics devices.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"548 ","pages":"Article 130569"},"PeriodicalIF":2.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851546","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}