Indian Journal of Physics最新文献_第2页

A combined integrable hierarchy with four potentials and its recursion operator and bi-Hamiltonian structure 四势组合可积层次及其递归算子和双哈密顿结构

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-10-09 DOI: 10.1007/s12648-024-03364-4

Wen-Xiu Ma

引用次数: 0

Design and analysis of low-loss and low-dispersion hybrid cladding tube antiresonant fiber for the THz regime 太赫兹区低损耗低色散混合包层管抗谐振光纤的设计与分析

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-30 DOI: 10.1007/s12648-024-03422-x

Maharaja Balaji, Sathiyan Samikannu

{"title":"Design and analysis of low-loss and low-dispersion hybrid cladding tube antiresonant fiber for the THz regime","authors":"Maharaja Balaji, Sathiyan Samikannu","doi":"10.1007/s12648-024-03422-x","DOIUrl":"10.1007/s12648-024-03422-x","url":null,"abstract":"<div>This article aims to highlight the development of a novel antiresonant fiber with a hollow core and four elliptical and circular cladding tubes for terahertz communication applications. The fiber substrate material is Zeonex, and its performance is analyzed using COMSOL Multiphysics software with an operating frequency of 0.5(-)2.8 THz. Based on the variation of cladding tube dimensions, the fiber performance is analyzed with distinct tube thicknesses (t) of 0.08, 0.10, and 0.12 mm. This fiber model has been revealed low confinement loss (CL) of 1.02(times 10^{-6}) (dBcm^{-1}) at a tube thickness of 0.10 mm, negligible effective material loss (EML) of 6.36(times 10^{-6}) (dBcm^{-1}), propagation loss of 9.50(times 10^{-6}) (dBcm^{-1}) and a broad low-loss transmission bandwidth of 0.9 THz. Additionally, it exhibits a near-flat zero dispersion bandwidth of 1.3 THz, a maximum power fraction of 99.9(%), and a higher order mode extinction ratio (HOMER) of 220. Analysis was also made of confinement loss for the proposed fiber’s higher-order modes (HOMs).</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 5","pages":"1899 - 1908"},"PeriodicalIF":1.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840255","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

One sided sequential sharing of tripartite nonlocality for pure and mixed three-qubit states 纯和混合三量子位态的三方非定域的单向顺序共享

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-28 DOI: 10.1007/s12648-024-03331-z

Sk Sahadat Hossain

{"title":"One sided sequential sharing of tripartite nonlocality for pure and mixed three-qubit states","authors":"Sk Sahadat Hossain","doi":"10.1007/s12648-024-03331-z","DOIUrl":"10.1007/s12648-024-03331-z","url":null,"abstract":"<div>Tripartite nonlocality holds significant theoretical value and has numerous applications in quantum information and computation. With dichotomic measurement settings, several aspects of tripartite nonlocality are identified by violations of the Svetlichny inequality, Mermin inequality, the 46 facet inequalities of Sliwa, and the inequalities established by Bancal et al. Silva et al. explored the concept of nonlocality sharing among multiple copies of a party. This paper focuses on determining the number of observers who can simultaneously share distinct tripartite nonlocal correlations under a one-sided sequential measurement formalism. Specifically, we examine a scenario where three spatially separated parties-Alice, Bob, and multiple Charlies-share three spin- (frac{1}{2}) particles. For multiple Charlies, we have identified constraints on (theta) (pure state) and p (mixed state), demonstrating the sequential sharing of various forms of tripartite nonlocality with a single Alice and Bob. Notably, under sequential measurement formalism, a non-maximally pure entangled state exhibits the same sharing capacity as a maximally entangled state.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 2","pages":"581 - 590"},"PeriodicalIF":1.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143110138","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

Superparamagnetism in the decorated square and triangular Blume-Capel Ising systems by mean-field theory 用平均场理论研究装饰方形和三角形Blume-Capel - Ising系统的超顺磁性

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-28 DOI: 10.1007/s12648-024-03396-w

Aqeel Raad Ghafel, Hadey K. Mohamad

{"title":"Superparamagnetism in the decorated square and triangular Blume-Capel Ising systems by mean-field theory","authors":"Aqeel Raad Ghafel, Hadey K. Mohamad","doi":"10.1007/s12648-024-03396-w","DOIUrl":"10.1007/s12648-024-03396-w","url":null,"abstract":"<div>In the molecular mean-field approximation, comparable studies have been done for decorated ferrimagnetic mixed spin square and triangular systems. Based on the Blume-Capel Ising model, it has been evaluated the results of the study. The proposed research paper has tested the square and triangular lattices for the effect of crystal fields and external magnetic fields on ferrimagnetic mixed spin-3/2 and spin-7/2 decorated devices, respectively. It is worth noting that spin-3/2 ions are located as nodal, and in the surroundings of the lattice, there are four or six other spin-7/2 ions. Therefore, one can create superparamagnetic behaviors by altering exchange interactions with various crystal fields or external magnetic fields. New features have been found that the mixed spin square or triangular decorated ferrimagnets make superparamagnetism in the different values of (K_{B} T/left| {J_{2} } right|), with fixed values of DA/|J2|= 8, DB/|J2|= − 11, and J1 = − 0.5, J2 = 1, for mixed spin square and triangular lattices, respectively.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 4","pages":"1347 - 1359"},"PeriodicalIF":1.6,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688345","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

Dual-functional grating splitter with high efficiency at the second-order Littrow incidence 具有二阶利特罗入射高效率的双功能光栅分频器

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-26 DOI: 10.1007/s12648-024-03418-7

Xuantong Shi, Bo Wang, Zherui Cui, Jinjie Li, Hongwei Zhan

引用次数: 0

Hierarchical microstructure in mesoporous SnO2 beads 介孔二氧化锡珠中的分层微结构

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-25 DOI: 10.1007/s12648-024-03419-6

Suresh Koppoju, Tarun Babu Mangalarapu, Easwaramoorthi Ramasamy

{"title":"Hierarchical microstructure in mesoporous SnO2 beads","authors":"Suresh Koppoju, Tarun Babu Mangalarapu, Easwaramoorthi Ramasamy","doi":"10.1007/s12648-024-03419-6","DOIUrl":"10.1007/s12648-024-03419-6","url":null,"abstract":"<div>Tin oxide (SnO2) mesoporous beads are a significant category of nanostructured materials with extensive applications in sensors and energy storage. In this study, we report the microstructural evolution of the mesoporous SnO2 beads, particularly focusing on the formation of primary SnO2 particles. The beads were synthesized through a solvothermal method and subsequently underwent heat treatment (calcination). The beads maintained a spherical shape regardless of the solvothermal temperature, which varied between 140 and 180 °C, causing the average bead size to increase from 120 to 550 nm. Initially, the beads were amorphous but became crystalline post-calcination at temperatures of 400 °C and above. SAXS data analysis indicated that the as-prepared beads contain a heterogeneous structure consisting of a tin-rich organic complex network with particle sizes ranging from 1.2 to 1.4 nm. Upon calcination at 300 °C and above, the size of these primary crystalline SnO2 particles increases. It was determined from combined SAXS and XRD studies that these primary crystalline particles originate from an amorphous precursor in the as-prepared beads. The mesoporous structure forms only after calcination of the beads at 400 °C or higher due to the dissociation and evaporation of polyvinyl pyrrolidone (PVP), leaving empty spaces between the primary crystalline SnO2 particles.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 5","pages":"1709 - 1719"},"PeriodicalIF":1.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840441","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

Optimizing the performance of perovskite-based organic solar cells via graphene integration as the hole transport layer: a comprehensive analysis 通过石墨烯集成作为空穴传输层优化钙钛矿基有机太阳能电池的性能：综合分析

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-25 DOI: 10.1007/s12648-024-03420-z

M. ElMasfioui, S. Bahsine, M. M. Shabat, F. Lmai, A. Elbiyaali, F. Allali

{"title":"Optimizing the performance of perovskite-based organic solar cells via graphene integration as the hole transport layer: a comprehensive analysis","authors":"M. ElMasfioui, S. Bahsine, M. M. Shabat, F. Lmai, A. Elbiyaali, F. Allali","doi":"10.1007/s12648-024-03420-z","DOIUrl":"10.1007/s12648-024-03420-z","url":null,"abstract":"Perovskite solar cells ((PSCs)), despite achieving efficiencies above (25text{%}), face concerns about structural stability due to organic compounds. This study focuses on modeling a stable, inorganic PSC using (Cs{GeI}_{3}) within the SCAPS-1D framework. Employing carbon-based electron transport layers and copper-based hole transport layers, along with graphene integration, enhances electrical and thermal conductivity. Among four configurations, the n-perovskite/perovskite/CZTSSe/Gr arrangement exhibits promising results: (1.1377 V) ({V}_{oc}), (22.62 mA/c{m}^{2}) ({J}_{sc}), (87.42text{%}) fill factor, and a (22.50text{%}) power conversion efficiency. The analysis explores factors impacting performance, such as quantum efficiency, electric field strength, interface properties, layer characteristics, doping concentration, and temperature. It also evaluates resistance factors, interface defects, and the influence of reflection coatings, presenting a comprehensive understanding of the introduced efficient (PSC) configuration in the context of inorganic materials, especially those with cesium incorporation.","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 5","pages":"1721 - 1737"},"PeriodicalIF":1.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143840442","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

Green, low-temperature annealed high cesium content perovskites for tandem solar cells 绿色，低温退火的高铯含量钙钛矿串联太阳能电池

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-23 DOI: 10.1007/s12648-024-03417-8

A. Hasseli, E. Sadeghi, M. Kanani, P. Rafieepour, S. Molavali, F. Sadeghfar

引用次数: 0

Enhancing microstructure and magnetic properties of ribbons of Cu–Co–Ti alloy through ball milling: experimental insights and theoretical perspectives 通过球磨提高铜-钴-钛合金带的微观结构和磁性能：实验见解和理论视角

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-19 DOI: 10.1007/s12648-024-03421-y

Sumit Chabri, Arijit Sinha, Madhumita Nath, Atul Bandyopadhyay, Gurudas Mandal

{"title":"Enhancing microstructure and magnetic properties of ribbons of Cu–Co–Ti alloy through ball milling: experimental insights and theoretical perspectives","authors":"Sumit Chabri, Arijit Sinha, Madhumita Nath, Atul Bandyopadhyay, Gurudas Mandal","doi":"10.1007/s12648-024-03421-y","DOIUrl":"10.1007/s12648-024-03421-y","url":null,"abstract":"<div>To create granular materials with exceptional magnetoresistance properties, immiscible alloys were ball-milled in RSP (rapid solidification processing) ribbon. A system based on copper (Cu–Co) has been investigated. For Cu–Co–Ti, a single supersaturated solid solution has been found. The addition of Ti to Cu–Co substantially increases its solid solubility. The evolution of phase (s) during rapid solidification, and mechanical alloying followed by isothermal annealing were characterized using various techniques including differential thermal analyzers, High-resolution transmission electron microscopy, and X-ray diffraction. This study extensively used the superconducting quantum interference device magnetometer to observe magnetic behavior. The Cu–Co–Ti alloy from the ball milling RSP ribbon process was annealed at 550 °C for 1 h to get the favorable combination of magnetic characteristics. An in-depth theoretical analysis of the magnetic properties was conducted through the application of the 'VAMPIRE' software package, employing Monte Carlo Simulation as the underlying methodology.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 5","pages":"1741 - 1748"},"PeriodicalIF":1.6,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258220","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

Saturation effect in confined quantum systems with energy-dependent potentials 具有能量依赖势的约束量子系统中的饱和效应

IF 1.6 4区物理与天体物理

Indian Journal of Physics Pub Date : 2024-09-18 DOI: 10.1007/s12648-024-03403-0

Ohood Ali AL-Sbaheen, Ahmed Al-Jamel, Mohamed Ghaleb Al-Masaeed

{"title":"Saturation effect in confined quantum systems with energy-dependent potentials","authors":"Ohood Ali AL-Sbaheen, Ahmed Al-Jamel, Mohamed Ghaleb Al-Masaeed","doi":"10.1007/s12648-024-03403-0","DOIUrl":"10.1007/s12648-024-03403-0","url":null,"abstract":"<div>In this paper, we study the saturation effect in the energy or mass spectra of three quantum models with energy-dependent potentials: the harmonic oscillator, the hydrogen atom, and the heavy quarkonia. We used the method proposed in [García-Martínez (Phys Lett 373:3619, 2009)], which is based on studying various canonical point and gauge transformations applied to a function, g(x), multiplied by a given differential equation of known solutions as special orthogonal functions, that convert it into a Schrödinger-like equation. The first two models stem from implementing the method on the confluent hypergeometric differential of the well-known solutions ( _1 F_1), while the third model (heavy quarkonia) stems possibly from the hypergeometric differential of the well-known solutions ( _2 F_1). In particular, the heavy quarkonia mass spectra for both (cbar{c}) and (bbar{b}) are produced at different values of the saturation parameter (lambda ) and compared with the available experimental data. It is found that these systems may exhibit saturation effect when the energy-dependent effect is included.</div>","PeriodicalId":584,"journal":{"name":"Indian Journal of Physics","volume":"99 5","pages":"1805 - 1814"},"PeriodicalIF":1.6,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142258221","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