The European Physical Journal B最新文献_第7页

Semiempirical and interpretable machine learning of the oxygen interaction barriers in thousands of the two-dimensional materials 数千种二维材料中氧相互作用障碍的半经验和可解释的机器学习

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-18 DOI: 10.1140/epjb/s10051-025-01001-5

Raphael M. Tromer

{"title":"Semiempirical and interpretable machine learning of the oxygen interaction barriers in thousands of the two-dimensional materials","authors":"Raphael M. Tromer","doi":"10.1140/epjb/s10051-025-01001-5","DOIUrl":"10.1140/epjb/s10051-025-01001-5","url":null,"abstract":"<p>We present a combined semiempirical and machine learning approach to predict oxygen interaction barriers in 4036 two-dimensional (2D) materials from the C2DB database. Using the Extended Hückel Method (EHM), calibrated to reproduce the known oxygen barrier on graphene, we computed barrier energies along multiple adsorption paths. These values served as targets for supervised learning models based on descriptors from C2DB and Matminer. Among the tested models, XGBoost delivered the best performance, with SHAP analysis revealing that electronic features, such as electronegativity and valence electron count, are key predictors of barrier height, highlighting the underlying nonlinear relationships between material features and adsorption behavior. This framework enables efficient and interpretable screening of oxygen reactivity in 2D systems, supporting the design of oxidation-resistant and functional surfaces. These findings underscore the role of nonlinear science in materials discovery and highlight how combining semiempirical modeling with interpretable machine learning can efficiently capture complex surface interactions in 2D materials.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144359","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

Interplay of order parameters in an (s+d) two-band superconducting model (s+d)双波段超导模型中序参量的相互作用

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-15 DOI: 10.1140/epjb/s10051-025-01000-6

Zhixu Wang, Qiang Gu

引用次数: 0

Breather bright solitary waves generation induced by lattice deformations and electron–peptide asymmetry interaction degree in a generalized Davydov–Scott model for polarons in linear peptide chains 线性肽链中极化子的广义Davydov-Scott模型中晶格变形和电子-肽不对称相互作用程度诱导的明亮孤立波的产生

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-14 DOI: 10.1140/epjb/s10051-025-00998-z

Didier Belobo Belobo, Adamou Dang Koko

{"title":"Breather bright solitary waves generation induced by lattice deformations and electron–peptide asymmetry interaction degree in a generalized Davydov–Scott model for polarons in linear peptide chains","authors":"Didier Belobo Belobo, Adamou Dang Koko","doi":"10.1140/epjb/s10051-025-00998-z","DOIUrl":"10.1140/epjb/s10051-025-00998-z","url":null,"abstract":"<p>Polarons are quasiparticles whose properties are well known to influence important properties of material and nowadays, are expected to affect the dynamics of biomolecules. Elaborating on a recently introduced generalized model of linear polypeptides chains like the <span>(alpha )</span>-helical chains of proteins, the generation and emergence of breather bright solitary waves is analyzed via the modulation instability mechanism. It is shown that important features of the model, the right lattice deformations, and the degree of spatial asymmetry of the electron–peptide interactions profoundly alter the instability and the emergence of breather bright solitary waves. Analytical predictions of modulation instability are corroborated by intensive numerical simulations. Right lattice deformations favor the instability and the emergence of breather bright solitary waves, while the degree of spatial asymmetry of the electron–peptide interaction softens the instability. The lifetime of bright solitary waves generated in this work being within experimental range suggests that they are good candidates to explain transport and energy localization of amide-I excitations for example.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143972","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

Consequence of magnetic field, controlling metrics of potential on intrinsic electro-optical properties of an exciton: Pöschl–Teller potential vs. Razavy potential 磁场的结果，控制势对激子的本征电光性质的度量：Pöschl-Teller势与Razavy势

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-11 DOI: 10.1140/epjb/s10051-025-00996-1

M. Kavitha, A. Naifar, A. John Peter, V. Raja

{"title":"Consequence of magnetic field, controlling metrics of potential on intrinsic electro-optical properties of an exciton: Pöschl–Teller potential vs. Razavy potential","authors":"M. Kavitha, A. Naifar, A. John Peter, V. Raja","doi":"10.1140/epjb/s10051-025-00996-1","DOIUrl":"10.1140/epjb/s10051-025-00996-1","url":null,"abstract":"<div><p>In this meticulously conducted work, we compare the major consequences of an exciton’s response within a ZnSe/CdSe/ZnSe quantum well under the combined influences of several external determinants (magnetic fields, shapes of included potentials, well widths, and incident illumination). We have numerically tested the decisive parameters describing the shapes of the Pöschl–Teller and Razavy potentials to optimize the wave function and the binding energies. The oscillator strength has been examined in response to the magnetic field, well widths, and potential parameters. The theoretical study also includes the magnetic field associated absorption coefficient and the changes of refractive index. The results show that if the optical strength is relatively large, then the effect of the nonlinear (third-order) term is important and cannot be neglected when investigating the non-linear optical properties in the quantum well. In addition, the single quantum well changes into double quantum well with the magnetic field, 20 T. The structural parameters and the external perturbations decide the characteristic of the quantum well of these potentials. Harnessing the nonlinear optical response of quantum wells provides a robust foundation for developing advanced technologies in optoelectronics and nonlinear plasma interactions in which the field-induced effects and the wave phenomena can be finely tuned to enable next-generation functional devices.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142914","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

Communication patterns affect the collective performance of social agents 沟通模式影响社会主体的集体绩效

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-11 DOI: 10.1140/epjb/s10051-025-00997-0

Sandro M. Reia, Dieter Pfoser, Paulo R. A. Campos

{"title":"Communication patterns affect the collective performance of social agents","authors":"Sandro M. Reia, Dieter Pfoser, Paulo R. A. Campos","doi":"10.1140/epjb/s10051-025-00997-0","DOIUrl":"10.1140/epjb/s10051-025-00997-0","url":null,"abstract":"<p>More often than not, we work in group settings where the communication structure within and between groups governs the flow of information among individuals. This structure can be designed to optimize group performance, enabling individuals to solve tasks in the shortest time or achieve the highest reward. In this paper, we explore the effects of communication patterns on the collective performance of a group of interacting agents. The agents are tasked with performing an action, where the reward depends on their skill in executing that action. At any given time, an agent switching actions has two choices: to learn from the best-performing connected agent (with probability <i>q</i>), or to randomly explore the action space (with probability <span>(1-q)</span>). Our findings indicate that decentralized networks enhance collective performance by increasing both the overall group reward and the maximum reward achieved by an individual. Conversely, in more centralized and hierarchical networks, we observe that better connected agents, as reflected by their betweenness centrality, exhibit better performance.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-025-00997-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143306","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

Fractional and stochastic dynamics of predator–prey systems: The role of fear and global warming 捕食者-猎物系统的零碎和随机动力学：恐惧和全球变暖的作用

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-10 DOI: 10.1140/epjb/s10051-025-00992-5

Ashraf Adnan Thirthar, Abdesslem Lamrani Alaoui, Subarna Roy, Pankaj Kumar Tiwari

{"title":"Fractional and stochastic dynamics of predator–prey systems: The role of fear and global warming","authors":"Ashraf Adnan Thirthar, Abdesslem Lamrani Alaoui, Subarna Roy, Pankaj Kumar Tiwari","doi":"10.1140/epjb/s10051-025-00992-5","DOIUrl":"10.1140/epjb/s10051-025-00992-5","url":null,"abstract":"<p>This study introduces a predator–prey model incorporating fear of predators, memory effects and the influences of climate changes. Climate change influences are represented through an exponential decay function. We examine the well-posedness of the system by analyzing the existence, uniqueness, boundedness, and positivity of its solutions. Additionally, the local dynamics of the system are analyzed, with a specific focus on the occurrence of Hopf bifurcation. The effects of environmental disturbances on system dynamics are also examined through white noises. Numerical explorations include sensitivity of the parameters as well as one/two-parameter bifurcation diagrams. Our results explore the interactive effects of the prey’s birth rate and the fear of predators. Lower values for either parameter make it challenging to achieve stability, even if the value of the other parameter is high. Moreover, when fear levels become excessively high, stability can be regained only if the prey’s birth rate is sufficiently increased. Overall, our study provides deep insights into the influence of fear, fractional-order dynamics, and climate change effects on the predator–prey interactions.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143021","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

Magnetic and binding properties of piezoelectric polarons in GaAs, CuCl, and RbCl quantum wells GaAs、CuCl和RbCl量子阱中压电极化子的磁性和结合特性

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-08 DOI: 10.1140/epjb/s10051-025-00986-3

Swapna Vemula, Anusha Kachu, Thara Angoth, I. V. Sankar, Narasimha Raju Chebrolu, Aalu Boda

引用次数: 0

Electronic correlation and Mott localization of paramagnetic CrSBr crystal 顺磁CrSBr晶体的电子相关及Mott定位

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-05 DOI: 10.1140/epjb/s10051-025-00991-6

L. Craco, S. S. Carara, E. F. Chagas, A. R. Cadore, S. Leoni

{"title":"Electronic correlation and Mott localization of paramagnetic CrSBr crystal","authors":"L. Craco, S. S. Carara, E. F. Chagas, A. R. Cadore, S. Leoni","doi":"10.1140/epjb/s10051-025-00991-6","DOIUrl":"10.1140/epjb/s10051-025-00991-6","url":null,"abstract":"<div><p>We perform a comprehensive analysis of the correlated electronic structure reconstruction within the paramagnetic phase of CrSBr van der Waals (vdW) crystal. Using generalized gradient approximation plus dynamical mean-field theory calculations, we explicitly demonstrate the importance of local dynamical correlations for a consistent understanding of the emergent Mott localized electronic state, showing the interplay between one-electron lineshape and multi-orbital <span>(t_{2g})</span> electronic interactions. Our strongly correlated many-body scenario is relevant to understanding the electronic structure reconstruction of the <span>(hbox {Cr}^{3+})</span> oxidation state with nearly half-filled <span>(t_{2g})</span> orbitals and should be applicable to other vdW materials from bulk down to the low-dimensional limit. This work is a step forward in understanding the manifestation of orbital-selective Mott localization and its link to angle-resolved photoemission spectroscopy, electrical resistivity, and the current–voltage characteristic. The presented theoretical results indicate how orbital reconstruction leads to volatile memristive functionality of CrSBr for future neuromorphic computing.</p></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142504","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

Optimized design and performance test of 16 kA HTS current leads used for fusion HTS magnets 用于熔合高温超导磁体的16ka高温超导电流引线的优化设计和性能测试

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-03 DOI: 10.1140/epjb/s10051-025-00994-3

Zi Li, Xuyang Kang, Chenyang Xia, Zhiyong Yan, Suxin Wang, Liujiang Li, Yutong Tian, Jiahui Zhu, Qi Zhou, Chenyu Zhang, Ruihuang Liu, Yunfei Tan

{"title":"Optimized design and performance test of 16 kA HTS current leads used for fusion HTS magnets","authors":"Zi Li, Xuyang Kang, Chenyang Xia, Zhiyong Yan, Suxin Wang, Liujiang Li, Yutong Tian, Jiahui Zhu, Qi Zhou, Chenyu Zhang, Ruihuang Liu, Yunfei Tan","doi":"10.1140/epjb/s10051-025-00994-3","DOIUrl":"10.1140/epjb/s10051-025-00994-3","url":null,"abstract":"<div><p>Heat leakage from current leads is a primary factor influencing the heat load of large superconducting magnet systems. High Temperature Superconducting current leads (HTSCL), in comparison to traditional copper current leads, can significantly reduce both Joule heat and conductive heat leakage in superconducting magnet systems, thereby reducing operational costs. This paper provides a comprehensive optimization of a pair of 16 kA HTSCL intended for the performance test of HTS fusion magnets. Several optimization models were constructed to determine the optimal parameters. The heat load and maximum current-carrying capacity of 16 kA HTSCL are calculated and optimized, and the performance in steady state and loss of flow accident (LOFA) transient process are also analyzed. After about a year of manufacturing, this 16 kA HTSCL were tested in November 2024. The performance test scheme and test results are introduced in detail, mainly including steady state test, LOFA test, joint resistance test, etc. The experimental results are in good agreement with the simulation results, with all indicators meeting the design requirements for fusion HTS magnets.</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":"98 7","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145142225","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

Monte Carlo exploration of hysteresis loops in Lieb and Dice lattice geometries 用蒙特卡罗方法探索Lieb和Dice晶格几何中的迟滞回路

IF 1.7 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-07-02 DOI: 10.1140/epjb/s10051-025-00982-7

Z. Fadil, Chaitany Jayprakash Raorane, A. Jabar, Khaled H. Mahmoud, Abdulrahman A. Alsayyari, Seong Cheol Kim

引用次数: 0