The European Physical Journal B最新文献

{"title":"Unveiling the structural, electronic, optical, mechanical, and thermodynamic properties of Mg3ZnO4 in a Caswellsilverite-like structure: a DFT study","authors":"Moufdi Hadjab,&nbsp;Mohamed Issam Ziane,&nbsp;Abderrahim Hadj Larbi,&nbsp;Hamza Bennacer,&nbsp;Mehrdad Faraji,&nbsp;Olga Guskova","doi":"10.1140/epjb/s10051-024-00805-1","DOIUrl":"10.1140/epjb/s10051-024-00805-1","url":null,"abstract":"<div><p>This study investigates the physical properties of the novel mixed metal oxide Mg₃ZnO₄, emphasizing its potential in optoelectronic manufacturing. We provide a comprehensive analysis of its structural, optoelectronic, mechanical, and thermodynamic characteristics, focusing on the ternary compound, which crystallizes in a rocksalt phase similar to the mineral Caswellsilverite. Using advanced density functional theory (DFT) and the Full-Potential Linearized Augmented Plane Wave (FP-LAPW) method within the WIEN2k package, we predict the material’s properties in detail. Our structural analysis confirms the stability of Mg₃ZnO₄ in the cubic Pm3̅m space group, revealing key crystallographic parameters. The electronic structure calculations indicate a well-defined energy band gap, confirming its semiconducting nature and suitability for optoelectronic applications. Optical properties, including the dielectric function, absorption, and reflection spectra, demonstrate significant light interaction, highlighting the material’s potential for UV photodetectors and photovoltaic solar cells. The investigation of elastic properties provides critical insights into the mechanical strength and durability of Mg₃ZnO₄, further supporting its viability for demanding applications. Additionally, our thermodynamic analysis reveals the material’s behavior under varying environmental conditions, reinforcing its potential in high-performance optoelectronic devices. These findings establish Mg₃ZnO₄ as a promising candidate for advanced thin-film solar cells and pave the way for future experimental and theoretical studies to explore its unique properties for innovative technological applications.</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":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595560","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}

{"title":"Dissipative systems have a maximum energy rate density of 105 W/kg","authors":"Martin van Duin","doi":"10.1140/epjb/s10051-024-00785-2","DOIUrl":"10.1140/epjb/s10051-024-00785-2","url":null,"abstract":"<div><p>Mass and energy rate (ER) data have been collected for a wide variety of dissipative systems from the biological, cultural, and cosmological realms. They range from 6 × 10^–25 kg and 3 × 10^–25 W for a synthetic, molecular engine to 1.5 × 10⁵³ kg and 10⁴⁸ W for the observable universe and, thus, span 78 mass and 73 ER orders of magnitude, respectively. The combination of (i) convergence of smaller systems (parts) to a larger system and (ii) scaling of ER as a function of mass with a power law constant β &gt; 0 for groups of systems, explains why the ER and mass data points fall in a diagonal band in the double logarithmic ER <i>vs.</i> mass master plot. There appears to be an ER <i>vs.</i> mass limit, corresponding to an energy rate density (ERD = ER/mass) of around 10⁵ W/kg, separating stable, dissipative systems from unstable, “explosive” systems (atomic weapons, supernova, <i>etc.</i>) in all realms. This limit is probably the result of a balance between the energy flow through a system, resulting in increased temperature and pressure, and the strength of the system’s structure and boundary. ERD has been proposed as a metric for the development of the complexity of dissipative systems over deep time Chaisson (Cosmic evolution; The rise of complexity in nature. Harvard University Press, Cambridge, 2002), Chaisson (Sci World J 384912, 2014). Thus, the observed ERD threshold of 10⁵ W/kg may correspond to a maximum of complexity. Several ways to further increase complexity while circumventing this ERD limit are proposed.</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":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579439","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}

{"title":"Spinor Boltzmann equation with Berry curvature","authors":"Xiao-Tong Xu,&nbsp;Ya-Ru Wang,&nbsp;Chao Yang,&nbsp;Zheng-Chuan Wang","doi":"10.1140/epjb/s10051-024-00811-3","DOIUrl":"10.1140/epjb/s10051-024-00811-3","url":null,"abstract":"<p>In this paper, we study the influence of Berry curvature on spin-dependent transport in the system with spin-orbit coupling. The interaction of spin-orbit coupling in ferromagnets will induce a non-zero Berry curvature by breaking the time-reversal symmetry, which has effect on both charge and spin transport processes. We introduce the Berry curvature into spinor Boltzmann equation by modifying the effective velocity of electron, then derive the Berry curvature-concerned expressions for spin accumulation, spin current, and charge current, and investigate the influence of Berry curvature on the transport process. Comparisons are also made with the spinor Boltzmann equations which includes Rashba spin-orbit coupling but without Berry curvature.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579507","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}

{"title":"Investigation of electrophysical and photoelectric properties of solid solution alloys (CdSe)1–x(As2S3)x depending on composition","authors":"I. I. Aliyev,&nbsp;R. M. Rzayev,&nbsp;Kh. M. Gashimov,&nbsp;C. A. Ahmedova,&nbsp;Y. I. Aliyev,&nbsp;A. Y. Huseynova","doi":"10.1140/epjb/s10051-024-00813-1","DOIUrl":"10.1140/epjb/s10051-024-00813-1","url":null,"abstract":"<div><p>The study of renewable energy sources is currently an urgent problem. Such materials are produced by constructing phase diagrams or by cation–anionic substitution of an existing material. From this point of view, the formation of a solid solution (CdSe)_1–<i>x</i>(As₂S₃)x can be due to anionic substitution, which is capable of creating functional properties. In this regard, differential thermal analysis (DTA), X-ray diffraction (XRD), microstructural analysis (MSA), as well as measurements of microhardness and density were performed on solid solutions (CdSe)_1–<i>x</i>(As₂S₃)_<i>x</i>. The nature of the chemical interaction of CdSe with As₂S₃ was studied and it was established that the introduction of As₂S₃ into the composition of CdSe leads to the formation of solid solutions. Moreover, it has been found that solid solutions are formed up to 3 mol% concentration of As₂S₃. The temperature dependence of the electrical conductivity and thermo-EMF of (CdSe)_1–<i>x</i>(As₂S₃)_<i>x</i> (x = 0.01; 0.02; 0.03) solid solutions has been studied. It has been established that the obtained alloys of the solid solution (CdSe)_1–<i>x</i>(As₂S₃)_<i>x</i> (x = (x = 0.01; 0.02; 0.03) are semiconductors of medium resistance. When introducing high-resistance samples of 1; 2 and 3 mol. % As₂S₃ into the composition of CdSe, the specific resistance of the alloys increases depending on the composition, and the conductivity decreases accordingly. For alloys of solid solutions (CdSe)_1–<i>x</i>(As₂S₃)_<i>x</i>, in the composition of 0.3; 0.6; 0.8 and 1.0 mol % As₂S₃, the spectral distribution of the photocurrent was studied. Samples containing 0.3; 0.6; 0.8 and 1.0 mol% As₂S₃ are photosensitive materials capable of operating in the wavelength range of 0.4–1.1 μm.</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":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565982","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}

{"title":"Electron correlation and magnetic field induced phase transitions in spin-1/2 Falicov–Kimball model on a triangular lattice","authors":"Swati Pandey,&nbsp;Umesh K. Yadav,&nbsp;Pradip K. Priya","doi":"10.1140/epjb/s10051-024-00812-2","DOIUrl":"10.1140/epjb/s10051-024-00812-2","url":null,"abstract":"<p>We have studied the ground state properties of spin-1/2 Falicov–Kimball model on a triangular lattice in the presence of external magnetic field. Numerical and Monte Carlo simulation methods are employed to obtain the results. We have found that the ground state properties are significantly influenced by the onsite Coulomb correlation between itinerant and localized electrons as well as the orbital magnetic field. Only rational flux fractions are taken into consideration in each unit cell. Transition from metal to insulator phase is accompanied by phase segregation to regular/quasi-regular/mixed phase with change in magnetic field for small values of onsite Coulomb correlation. The external magnetic field facilitates metal to insulator transition even at large values of onsite Coulomb correlation with variation in the number of electrons in the system. The results obtained through this study are applicable to layered triangular lattice systems such as rare earth and transition metal dichalcogenides, cobaltates, <span>(GdI_{2})</span>, <span>(NaTiO_{2})</span>, <span>(NaVO_{2})</span> etc. Further, electric and magnetic sensors and high-energy storage devices can be developed using these results.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565929","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}

{"title":"Two-layer network evolutionary game model applied to complex systems","authors":"Liming Zhang,&nbsp;Ming Cai,&nbsp;Yingxin Zhang,&nbsp;Shuai Wang,&nbsp;Yao Xiao","doi":"10.1140/epjb/s10051-024-00809-x","DOIUrl":"10.1140/epjb/s10051-024-00809-x","url":null,"abstract":"<p> Elements within a system undergo dynamic changes, steering its evolution. However, the heterogeneity and complex interconnections of real-world system elements make it difficult for single-layer network game methods to effectively integrate with reality and describe the evolutionary process. To tackle this issue, we propose a complex network-based two-layer evolutionary game model, applicable to complex systems. This model includes the element evolution network and the group game network. The surface layer presents the relationships and developmental trends of system elements, while the underlying layer simulates participant strategy optimization, which in turn drives the evolution of the surface layer. To enhance practical applications, this paper abstracts elements as strategies and extends the participant’s strategies into combinations of multiple strategies. This approach overcomes the limitations of finite strategy options in traditional 2<span>(times )</span>2 game models. In this paper, the cross-citation data from the literature and the Bidirectional Encoder Representations from Transformers (BERT) model are employed to measure the system evolution-related strategy values. Through mathematical reasoning, it is determined that the number of elements is a critical factor influencing time-sensitivity in simulations across various scenarios. This paper conducts a system evolution analysis using the Intelligent Transportation System (ITS) as a case study. Initially, the electric vehicle popularization (EVP) scenario, characterized by relatively mature market development, is employed for model calibration. The experimental results show that the relative error of the calibrated model is 0.3132 and the absolute error is 0.0138. Compared to traditional fitting models, the output evolutionary trajectory aligns significantly with real-world conditions. Based on the calibration parameters, an application analysis is conducted on the cooperative vehicle infrastructure (CVI) scenario, which reflects the level of intelligence in ITS. The analysis predicts market evolution trends for different levels of autonomous vehicles, providing a scientific foundation for decision-making processes within governments and enterprises.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 11","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142565928","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}

{"title":"Thermodynamic properties of perovskite MgSiO3 with cubic structure under extreme conditions","authors":"Hoc Quang Nguyen,&nbsp;Nhi Quynh Nguyen,&nbsp;Mai Thi Dao,&nbsp;Vien Cong Tran,&nbsp;Tra Thi Thu Lai,&nbsp;Anh Thi Van Le,&nbsp;An Thi Thuy Nguyen","doi":"10.1140/epjb/s10051-024-00804-2","DOIUrl":"10.1140/epjb/s10051-024-00804-2","url":null,"abstract":"<div><p>The article applies the thermodynamic theory built by statistical moment method (SMM) to determine numerically the temperature and pressure dependences of the thermal expansion coefficient, the heat capacity constant pressure and the Gruneisen parameter of MgSiO₃ perovskite in the temperature range from 0 to 4000 K and in the pressure range from 0 to 135 GPa. Our SMM numerical results for MgSiO₃ perovskite are compared with that for CaSiO₃ perovskite, experimental data and results calculated by other methods. Our SMM numerical results are new and predictive of experimental results. This is the first application of SMM to study the thermodynamic characteristics of cubic MgSiO₃ perovskite under extreme conditions of the Earth’s lower mantle.</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":"97 10","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524456","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}

{"title":"Biaxial strain effect on Josephson supercurrent in a 2D Weyl semimetal","authors":"Chunxu Bai,&nbsp;Yanling Yang","doi":"10.1140/epjb/s10051-024-00795-0","DOIUrl":"10.1140/epjb/s10051-024-00795-0","url":null,"abstract":"<div><p>Based on the Weyl–Bogoliubov-de Gennes equation, we investigate the impact of biaxial strain on the Josephson supercurrent in a 2D Weyl semimetal Josephson junction, where the biaxial strain is induced by a piezoelectric film. It is shown that the current phase relation can be attenuated and non-monotonically modulated by the transverse and the longitudinal strain strength, respectively. When both are present, the subgap Andreev bound levels and the resulting Josephson supercurrent are sensitive to the potential energy and the length in the weak link region and the gate voltage (biaxial strain), and an enhancement or weakening of the supercurrent by shifting the Weyl nodes without requiring a magnetic or Zeeman term is induced. It is also revealed that the gate voltage (strain) can cause a supercurrent switch, where the cutoff gate voltage depends on the potential energy in the weak link region. The research also explores the temperature dependence of the supercurrent, noting a monotonic decrease and a logistic-like function with increasing temperature due to the thermal effect on subgap Andreev bound levels. The findings of this study are significant for the understanding of superconducting electronics in 2D Weyl semimetal and offering a new avenue for designing strain tunable quantum devices with all-electrical control.</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":"97 10","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524384","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}

{"title":"Hidden quantization phenomenon in the sznajd model with initial structure","authors":"Nicolás E. Amado,&nbsp;Marcos E. Gaudiano,&nbsp;Jorge A. Revelli","doi":"10.1140/epjb/s10051-024-00806-0","DOIUrl":"10.1140/epjb/s10051-024-00806-0","url":null,"abstract":"<div><p>Random initial conditions are extensively used in sociophysics models. However, hierarchically organized setups were recently used, producing interesting results which are not seen in the random case. We deepen those previous works by studying an opinion dynamics model where there are two initial opposing ideological groups and a third emergent party. We assume the same amount of adherents for each initial party and focus on varying the degree of their structure. Here we introduce a new approach that uses ternary diagrams as a tool to visualize phenomena that are otherwise hidden in conventional observables (e.g., parties’ probability of winning). We were able, through these diagrams, to unveil the presence of adherence quantization when the system is highly structured. We deduce an analytical expression finding an excellent agreement with simulated results. The explanation for this quantization is based on a new type of interaction, not between individuals, but among groups of individuals.</p></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"97 10","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519144","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}

{"title":"Effects of pressure on the structural, electronic, and elastic properties of superconductor material with perovskite structure YBa2Cu3O7: insights from ab initio calculation","authors":"Ahmed Abou El Hassan,&nbsp;A. Labrag,&nbsp;M. Bghour,&nbsp;M. khenfouch,&nbsp;H. El Ouaddi,&nbsp;M. Baiboud,&nbsp;Y. El Arfaoui,&nbsp;H. Charkaoui","doi":"10.1140/epjb/s10051-024-00798-x","DOIUrl":"10.1140/epjb/s10051-024-00798-x","url":null,"abstract":"<div><p>Superconducting materials' crystal lattices and electronic structures have fascinated the materials science research group. In the present work, we have investigated and discussed the structural, electronic, and elastic properties of single-crystal YBa₂Cu₃O₇ under pressure up to 20 GPa using the first principal calculations based on the density functional theory (DFT). The results showed that this compound's calculated lattice parameters under zero pressure agree with the experimental results. The calculated band structures and the DOS show that YBa₂Cu₃O₇ is metallic. The width of the electronic band increases with pressure, due to the increased overlap of the orbitals. The pressure-dependent single-crystal elastic constants ensure mechanical stability. The calculated value of Poisson’s ratio (<i>n</i> ~ 0.32) suggests that the compound is ductile and that the metallic contribution dominates our material. The variations of anisotropy indices show a monotonic dependence on pressure, indicating that the studied material becomes elastically anisotropic while increasing the pressure. Debye temperature and sound velocity were calculated from the elastic constants and crystal density. They increase systematically with pressure. Our material also appears to have high Debye temperatures, indicating that it may have high thermal conductivity. Finally, we have calculated and discussed the optical properties at ambient pressure (dielectric function, absorption, refractive index, conductivity, loss function, and reflectivity) for both polarization directions [100] and [001].</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":"97 10","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142524380","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}