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New kink-antikink solitons of the pair-transition-coupled nonlinear Schrödinger equations
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-23 DOI: 10.1016/j.physleta.2025.130290
Houria Triki , Sassi Aouadi , Chun Wei , Qin Zhou
{"title":"New kink-antikink solitons of the pair-transition-coupled nonlinear Schrödinger equations","authors":"Houria Triki ,&nbsp;Sassi Aouadi ,&nbsp;Chun Wei ,&nbsp;Qin Zhou","doi":"10.1016/j.physleta.2025.130290","DOIUrl":"10.1016/j.physleta.2025.130290","url":null,"abstract":"<div><div>This work presents three new types of coupled periodic waves in a two-component Bose-Einstein condensates (BEC) with pair-transition effects, which all degenerate to distinctive optical shock-wave pairs in the long-wave limit. The newly obtained kink-antikink soliton waveforms exist in two distinct types and are allowable in the repulsive nonlinear interaction case. The analytical nonautonomous periodic wave and kink-antikink solitons for the pair-transition-coupled nonlinear Schrödinger (NLS) equations with varying coefficients of nonlinearity, diffraction, pair-transition effects, gain/loss, and harmonic potential are obtained by similarity transformation. As an important application, the nonlinear tunneling effects of these constructed chirped nonautonomous kink-antikink solitons are discussed when they pass through nonlinear barrier and nonlinear well. The results indicate that the kink-antikink solitons form valleys or form peaks as they pass through nonlinear barriers or nonlinear wells, respectively.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130290"},"PeriodicalIF":2.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147075","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
Solitary wave solutions of ac-driven nonlinear Schrödinger equation supported by localized gain-loss
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-23 DOI: 10.1016/j.physleta.2025.130288
Sanjana Bhatia , Amit Goyal , Thokala Soloman Raju , C.N. Kumar
{"title":"Solitary wave solutions of ac-driven nonlinear Schrödinger equation supported by localized gain-loss","authors":"Sanjana Bhatia ,&nbsp;Amit Goyal ,&nbsp;Thokala Soloman Raju ,&nbsp;C.N. Kumar","doi":"10.1016/j.physleta.2025.130288","DOIUrl":"10.1016/j.physleta.2025.130288","url":null,"abstract":"<div><div>In this study, we investigate solitary wave solutions of the ac-driven nonlinear Schrödinger equation supported by localized gain-loss. By modifying the model equation to incorporate nonlinear loss, we derive exact analytical solutions for both localized and wave-train patterns. Utilizing powerful mathematical tools such as Möbius and fractional transformations, we identify analytical bright, dark, and periodic solutions, outlining the entire phase plot of the model parameters where these solutions are possible under both trivial and non-trivial chirping conditions. Our results demonstrate the model's versatility, providing a robust framework for the design and control of optical systems. This work advances the theoretical framework for dissipative solitons with significant potential for real-world applications in high-capacity telecommunications and optical frequency combs.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130288"},"PeriodicalIF":2.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147076","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
First-principles study of the superconducting properties of incompressible Re3X (X = B, C, and N) at ambient pressure
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-22 DOI: 10.1016/j.physleta.2025.130292
Wei-Wei Li, Hai-Jun Peng, Xi-Long Dou, Yu-Wei Chen, Shuang-Gang Xu, Xiao-Wei Sun
{"title":"First-principles study of the superconducting properties of incompressible Re3X (X = B, C, and N) at ambient pressure","authors":"Wei-Wei Li,&nbsp;Hai-Jun Peng,&nbsp;Xi-Long Dou,&nbsp;Yu-Wei Chen,&nbsp;Shuang-Gang Xu,&nbsp;Xiao-Wei Sun","doi":"10.1016/j.physleta.2025.130292","DOIUrl":"10.1016/j.physleta.2025.130292","url":null,"abstract":"<div><div>The discovery of a superconducting transition temperature of 32 K in MoB₂ has sparked intensified interest in the search for superconducting materials in among transition metals. The subsequent challenge lies in identifying superconducting materials within transition metals that can be synthesized at lower pressures. To address this, we investigate the electronic structure, lattice dynamics, and superconducting properties of Re₃X (where <em>X</em> = B, C, and N) at ambient pressure. Our results reveal that the varying densities of states contributed by <em>Re</em>, B, C, and N near the Fermi surface, along with the distinct bonding characteristics of <em>Re</em>-B, <em>Re</em>-C, and <em>Re</em>-N bonds, result in superconducting transition temperatures of 4.1, 0.6, and 2.6 K for Re₃B, Re₃C, and Re₃N, respectively, and superconducting hardness values of 12.8, 24.5, and 16.8 GPa. This study provides a theoretical basis for further exploration of transition metal superconducting materials under atmospheric pressure.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130292"},"PeriodicalIF":2.3,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147086","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
Gap solitons in spinor Bose-Einstein condensates with the Rabi coupling
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-22 DOI: 10.1016/j.physleta.2025.130289
Jing Yang, Yongping Zhang
{"title":"Gap solitons in spinor Bose-Einstein condensates with the Rabi coupling","authors":"Jing Yang,&nbsp;Yongping Zhang","doi":"10.1016/j.physleta.2025.130289","DOIUrl":"10.1016/j.physleta.2025.130289","url":null,"abstract":"<div><div>We study gap solitons in a spin-1 spinor Bose-Einstein condensates with optical lattices and the Rabi coupling. The spin-population of fundamental spinor gap solitons follows the eigenstate of the Rabi coupling. Furthermore, such the spin-population can be adjusted by the Rabi coupling in the presence of the quadratic Zeeman shift.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130289"},"PeriodicalIF":2.3,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147141","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
Fundamental and dipole-mode quantum droplets in one-dimensional dipolar Bose-Einstein condensates
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-22 DOI: 10.1016/j.physleta.2025.130291
Qianquan Zhu , Chao Kong
{"title":"Fundamental and dipole-mode quantum droplets in one-dimensional dipolar Bose-Einstein condensates","authors":"Qianquan Zhu ,&nbsp;Chao Kong","doi":"10.1016/j.physleta.2025.130291","DOIUrl":"10.1016/j.physleta.2025.130291","url":null,"abstract":"<div><div>We investigate dipolar Bose-Einstein condensates (BECs) trapped in a one-dimensional, cigar-shaped potential well, with all dipoles polarized along the axis of the potential. This research focuses on the formation and dynamics of quantum droplets within this system. We find that self-bound states occur when the strength of the contact interaction exceeds a certain threshold value. Quantum droplets, including both fundamental and dipole-mode states, can be produced when the contact interaction strength is large, while matter-wave solitons form when these values are weaker. The transition between matter-wave solitons and quantum droplets is identified through a comparison of numerical and analytical results. Additionally, the study briefly discusses collisions between fundamental and dipole-mode quantum droplets, which are found to be inelastic. The phenomena associated with these collisions are also described.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130291"},"PeriodicalIF":2.3,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143147153","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
The separation energy of two nanograins: Results from atomistic simulations
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-21 DOI: 10.1016/j.physleta.2025.130286
Maureen L. Nietiadi , Herbert M. Urbassek , Yudi Rosandi
{"title":"The separation energy of two nanograins: Results from atomistic simulations","authors":"Maureen L. Nietiadi ,&nbsp;Herbert M. Urbassek ,&nbsp;Yudi Rosandi","doi":"10.1016/j.physleta.2025.130286","DOIUrl":"10.1016/j.physleta.2025.130286","url":null,"abstract":"<div><div>The separation energy of two grains is an important quantity in studies of granular aggregates. It gives the energy needed to separate two grains from each other and is relevant for studies of grain and aggregate collisions as it determines grain sticking and bouncing. Using molecular dynamics simulations for a model system consisting of atoms interacting via the Lennard-Jones potential, we investigate to what extent available macroscopic laws for the separation energy can be founded in atomistics. We verify the predicted dependence of the separation energy on the surface energy. The dependence on grain radius is steeper in atomistic simulations than predicted by macroscopic laws. This can be rationalized by increased energy dissipation during the separation process for smaller grains. These results may be relevant in theoretical studies of the evolution of dust clouds by collisions.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"535 ","pages":"Article 130286"},"PeriodicalIF":2.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143128671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Improvement in photodetection characteristics of graphene/silicon heterojunction photodetector by ZnO interlayer
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-21 DOI: 10.1016/j.physleta.2025.130287
Qianqian Li, Tao Qu, Pei Song, Xing Wei, Yan Zhang, Jibin Fan
{"title":"Improvement in photodetection characteristics of graphene/silicon heterojunction photodetector by ZnO interlayer","authors":"Qianqian Li,&nbsp;Tao Qu,&nbsp;Pei Song,&nbsp;Xing Wei,&nbsp;Yan Zhang,&nbsp;Jibin Fan","doi":"10.1016/j.physleta.2025.130287","DOIUrl":"10.1016/j.physleta.2025.130287","url":null,"abstract":"<div><div>Graphene-based photodetectors have been proven efficient for photodetection, but its high dark current limits the weak signal detection. To cope with this issue, graphene/Si heterojunction photodetector is fabricated, and when introducing a zinc oxide interlayer, photodetection characteristics of graphene/Si heterojunction photodetector are greatly improved. Compared with that of the graphene/Si heterojunction photodetector, inserting an ∼10 nm zinc oxide interlayer in graphene/Si heterojunction photodetector resulted in significant decrease in the dark current and increase in the photocurrent, especially in the wavelength range of 400∼460 nm. The responsivity, detectivity and external quantum efficiency of Gr/ZnO/Si photodetector also show greatly improved compared to Gr/Si photodetector. The improvement of the photodetection characteristics is mainly attributed to effective modification of the interface state, a higher barrier height value and enhancement of light absorption provided by zinc oxide interlayer.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"535 ","pages":"Article 130287"},"PeriodicalIF":2.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129278","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
Optoelectronic properties of two-dimensional InN/WGe2As4 heterostructure with a robust type-II band alignment
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-21 DOI: 10.1016/j.physleta.2025.130285
Haochen Chen , Mengjie He , Wenyuan Jin , Zhaoyong Jiao
{"title":"Optoelectronic properties of two-dimensional InN/WGe2As4 heterostructure with a robust type-II band alignment","authors":"Haochen Chen ,&nbsp;Mengjie He ,&nbsp;Wenyuan Jin ,&nbsp;Zhaoyong Jiao","doi":"10.1016/j.physleta.2025.130285","DOIUrl":"10.1016/j.physleta.2025.130285","url":null,"abstract":"<div><div>Two-dimensional van der Waals (vdW) heterostructures show great potential for use in electronic and optoelectronic devices due to their exceptional performance. The diversity of lattice stacking way endows 2D vdW heterostructures with superior tunability of electronic properties. This study systematically investigates the structural, mechanical, and optoelectronic properties of InN/WGe<sub>2</sub>As<sub>4</sub> heterostructure based on first-principles calculations. Electronic structure calculations reveal that the InN/WGe<sub>2</sub>As<sub>4</sub> heterostructure is a type-II semiconductor with an indirect bandgap of 0.51 eV. The optical absorption peaks in the ultraviolet region of the InN/WGe<sub>2</sub>As<sub>4</sub> heterostructure are significantly stronger than those of InN and WGe<sub>2</sub>As<sub>4</sub> monolayers. Furthermore, both biaxial tensile strain and decreasing interlayer distance could effectively decrease the bandgap and therefore lead to a red shift of optical absorption. In particular, the InN/WGe<sub>2</sub>As<sub>4</sub> heterostructure exhibits a robust type-II band arrangement, which remains stable under the influence of biaxial strain and varying interlayer distance. The findings offer a route to achieve the robust type-II band arrangement heterostructure, which is helpful for the implementation of optoelectronic nanodevices with stable characteristics.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"536 ","pages":"Article 130285"},"PeriodicalIF":2.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143146575","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
Theoretical predictions of thermodynamic properties, elastic deformation, HCP-FCC structural phase transition and melting of iron at high temperatures up to 18000 K and high pressures up to 4000 GPa
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-20 DOI: 10.1016/j.physleta.2025.130281
Nguyen Quang Hoc , Nguyen Duc Trung , Hua Xuan Dat , Le Thu Lam
{"title":"Theoretical predictions of thermodynamic properties, elastic deformation, HCP-FCC structural phase transition and melting of iron at high temperatures up to 18000 K and high pressures up to 4000 GPa","authors":"Nguyen Quang Hoc ,&nbsp;Nguyen Duc Trung ,&nbsp;Hua Xuan Dat ,&nbsp;Le Thu Lam","doi":"10.1016/j.physleta.2025.130281","DOIUrl":"10.1016/j.physleta.2025.130281","url":null,"abstract":"<div><div>In this work, the statistical moment method is extended to determine the thermodynamic properties, elastic deformation, HCP-FCC structural phase transition and melting of iron under extreme conditions. The analytic expressions of structural and thermodynamic quantities (the density, the molar volume, the adiabatic and isothermal compressibilities, the thermal expansion, the heat capacities at constant volume and constant pressure, the Grüneisen parameter), elastic deformation quantities (the Young's modulus, the bulk modulus, the shear modulus, the compressional and shear wave velocities, Gibbs thermodynamic potential), HCP-FCC structural phase transition temperature, and melting temperature are performed capturing the full anharmonicity of lattice thermal vibrations. Theoretical results have been numerically calculated for structural, thermodynamic and elastic deformation quantities of HCP-Fe at high temperatures up to 7000 K and high pressures up to 1400 GPa, HCP-FCC structural phase transition curves and the phase diagram of iron in the range of pressure from 2400 to 4000 GPa. Our results allow a quantitative interpretation of the experimental results, contributing to the prediction of structural features, fundamental properties and geophysical applications of the Earth's core.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"535 ","pages":"Article 130281"},"PeriodicalIF":2.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129277","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
Typical thermoelectric materials: Progress and prospects
IF 2.3 3区 物理与天体物理
Physics Letters A Pub Date : 2025-01-20 DOI: 10.1016/j.physleta.2025.130280
Xingzhu Yuan, Yinchang Zhao, Zhenhong Dai
{"title":"Typical thermoelectric materials: Progress and prospects","authors":"Xingzhu Yuan,&nbsp;Yinchang Zhao,&nbsp;Zhenhong Dai","doi":"10.1016/j.physleta.2025.130280","DOIUrl":"10.1016/j.physleta.2025.130280","url":null,"abstract":"<div><div>The widespread application of thermoelectric devices depends on the development of high-performance, reliable and cost-effective modules, especially in the fields of energy recovery and thermoelectric power generation. This paper systematically reviews the research progress of thermoelectric materials, focusing on several types of classical materials with excellent thermoelectric potential, including full-Heusler, half-Heusler, perovskite, Zintl compounds, fluorite and antifluorite compounds. These materials show great potential in improving thermoelectric performance. By analyzing their electrical transport properties, thermal transport properties and thermoelectric performance regulation methods, their development in hot areas is discussed, and their prospects in thermoelectric applications are prospected. This review aims to provide new theoretical basis and technical support for the design and development of high-efficiency thermoelectric materials in the future, so as to promote the further development and application of thermoelectric materials.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"535 ","pages":"Article 130280"},"PeriodicalIF":2.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129180","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
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