Current Applied Physics最新文献_第9页

Magnetic-field-tuned superconductor-to-insulator transition via mosaic phase in cuprate thin films 铜薄膜中通过镶嵌相实现的磁场调谐超导体到绝缘体的转变

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-01-02 DOI: 10.1016/j.cap.2024.12.012

Han-Byul Jang , Jaehyun Lee , Younjung Jo , Chan-Ho Yang

{"title":"Magnetic-field-tuned superconductor-to-insulator transition via mosaic phase in cuprate thin films","authors":"Han-Byul Jang , Jaehyun Lee , Younjung Jo , Chan-Ho Yang","doi":"10.1016/j.cap.2024.12.012","DOIUrl":"10.1016/j.cap.2024.12.012","url":null,"abstract":"<div><div>The magnetic-field-induced superconductor-to-insulator transition (SIT) was investigated in highly disordered La<sub>1.85</sub>Sr<sub>0.15</sub>CuO<sub>4</sub> thin films. By systematically reducing the film thickness, disorder effects were enhanced, leading to the coexistence of superconducting and insulating phases at low temperatures. Electronic transport measurements revealed the formation of an intermediate mosaic phase, where localized Cooper pairs coexist with a coherent superconducting state. Near the quantum phase transition, scaling analysis determined a critical resistance <em>R</em><sub>c</sub> = 5.72 kΩ, consistent with the universal quantum resistance <em>R</em><sub>Q</sub> = <em>h</em>/4<em>e</em><sup>2</sup> for Cooper pairs. The critical product of the spatial and dynamic critical exponents <span><math><mrow><mi>z</mi><mi>ν</mi><mo>=</mo><mn>1.33</mn></mrow></math></span> aligns with the classical percolation universality class, emphasizing the role of percolation in governing the SIT under strong disorder. These results provide new insights into the quantum critical behavior and phase evolution of disordered superconducting systems.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 120-124"},"PeriodicalIF":2.4,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170840","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

Carbon nanoscroll-based memory cell 基于碳纳米卷的存储电池

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-31 DOI: 10.1016/j.cap.2024.12.009

Andrei I. Siahlo , Sergey A. Vyrko , Andrey M. Popov , Nikolai A. Poklonski , Yurii E. Lozovik

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Structural and optical properties of α aluminum oxide prepared by sol-gel method 溶胶-凝胶法制备α氧化铝的结构和光学性质

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-27 DOI: 10.1016/j.cap.2024.12.008

Ftema W. Aldbea , C. Va'zques- Va'zquez , M.A. Abobaker , A.Y. Alsteeni , A. Saad , A. Sharma , Pramod K. Singh , Markus Diantoro , M. May , T. Abdullah , A. Edhirej , S.M. Aldosari , M. Kraini

{"title":"Structural and optical properties of α aluminum oxide prepared by sol-gel method","authors":"Ftema W. Aldbea , C. Va'zques- Va'zquez , M.A. Abobaker , A.Y. Alsteeni , A. Saad , A. Sharma , Pramod K. Singh , Markus Diantoro , M. May , T. Abdullah , A. Edhirej , S.M. Aldosari , M. Kraini","doi":"10.1016/j.cap.2024.12.008","DOIUrl":"10.1016/j.cap.2024.12.008","url":null,"abstract":"<div><div>Aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) powders were prepared <em>via</em> sol-gel method. The samples underwent three-hours of calcination process between 1100 and 1200° C. An X-ray diffraction (XRD) was used to analyze structural properties, field emission scanning electron microscopy (FE-SEM) was employed to assess morphological characteristics, UV–visible (UV/vis) and Raman spectroscopies were used for determining the optical properties. According to the XRD data, the samples display α- Al<sub>2</sub>O<sub>3</sub> type in the hexagonal structure. As the calcination temperature increases, the lattice parameters of both samples remain unchanged, recording values of <em>a</em> = 4.76 ± 0.10 Å and c = 12.98 ± 0.10 Å. The crystalline size increases from 35.0 ± 0.1 to 38.0 ± 0.1 nm as calcination temperature increases from 1100 to 1200 °C, respectively. At 1100 °C the sample shows the presence many pores mixed with needles-like structures; with a further increase in the calcination temperature to 1200 °C, the sample shows large and porous particles. There is no change in the energy gap with increasing calcination temperatures; their values of 3.8 and 4.5 eV are recorded. This could be due to the Al<sub>2</sub>O<sub>3</sub> being stable at high calcination temperature. Raman spectra of both samples showed the active mode A1g located at 415 and 643 cm<sup>−1</sup> and the other Raman active mode of Eg located at 376, 429, 575 and 749 cm<sup>−1</sup>, these results are close to Raman spectra for single crystalline α-Al<sub>2</sub>O<sub>3</sub> but with slight differences in Raman peak positions which could be due to the disorder vibration of active phonon.</div><div>sanalysis are also discussed.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 85-90"},"PeriodicalIF":2.4,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169627","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}

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Crystallinity-dependent surface oxidation in Cu Films revealed by a visualization of surface plasmon 表面等离激元显示的Cu薄膜中结晶度依赖的表面氧化

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-24 DOI: 10.1016/j.cap.2024.12.010

M.S. Kim , J.S. Kim , B.N. Chae , J.S. Lee

引用次数: 0

Metal tungstates for resistive memory applications: A mini review 电阻式存储器用钨酸盐金属综述

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-17 DOI: 10.1016/j.cap.2024.12.007

Amitkumar R. Patil , Tukaram D. Dongale , Keshav Y. Rajpure

引用次数: 0

Physiochemical characterization of ambient PM10 and PM2.5 in an urban environment 城市环境中PM10和PM2.5的理化特征

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-16 DOI: 10.1016/j.cap.2024.12.006

Naresh Kumar , Firdaus Mohamad Hamzah , Markus Diantoro , Nabilah Akemal Muhd Zailani , Suman

{"title":"Physiochemical characterization of ambient PM10 and PM2.5 in an urban environment","authors":"Naresh Kumar , Firdaus Mohamad Hamzah , Markus Diantoro , Nabilah Akemal Muhd Zailani , Suman","doi":"10.1016/j.cap.2024.12.006","DOIUrl":"10.1016/j.cap.2024.12.006","url":null,"abstract":"<div><div>Air pollution in megacities is increasing due to high population density, vehicles, industry, and waste burning which negatively affects health and climate. Greater Noida is a rapidly urbanizing city in Uttar Pradesh where particulate matter research is crucial but limited. This study analyzed the particulate matter in Greater Noida, India during the winter of 2023. The average values of PM<sub>2.5</sub> and PM<sub>10</sub> were 106.97 μg m<sup>−3</sup> and 457.36 μg m<sup>−3</sup>, respectively. Further to study the physiochemical characteristics of particulate matter various techniques were used, including XRD, FT-IR, and FE-SEM coupled with EDX. The presence of minerals like calcite, dolomite, vaterite, and quartz at all sampling sites was identified by FT-IR and XRD techniques. The presence of magnesium was ascertained using dolomite's characteristic peaks. EDX spectra confirm the presence of iron oxides (magnetite and hematite). Analysis shows quartz, iron, biological particles, carbonates, and carbonaceous particles in the study area. C, O, B, Mg, Si, Ca, Cl, Al, Na, K, Zn, and S are the elements found in the study area. Different types of particles, including carbonaceous, iron-containing, feldspar, quartz, calcium-rich, and chlorine-rich particles, were found. Factors affecting air quality near the sampling site include dust, biological emissions, construction activities, and industrial emissions. Combining these methods provides a comprehensive approach to understanding the complex nature of PM in the environment, contributing to a better understanding of its origin, transformation, and potential impacts on health and the environment.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 57-69"},"PeriodicalIF":2.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170304","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

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-13 DOI: 10.1016/j.cap.2024.12.005

N.M. Ghazali, A.S. Samsudin

引用次数: 0

Enhancing performance and stability of perovskite solar cells via CsPbBr3 nanocrystal-assisted antisolvent engineering 利用CsPbBr3纳米晶辅助抗溶剂工程提高钙钛矿太阳能电池的性能和稳定性

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-12 DOI: 10.1016/j.cap.2024.12.004

Jaewon Oh , Sung Hun Kim , Seungsun Choi , Muntae Hwang , Hyunbok Lee , Hong Seok Lee , Mee-Yi Ryu

{"title":"Enhancing performance and stability of perovskite solar cells via CsPbBr3 nanocrystal-assisted antisolvent engineering","authors":"Jaewon Oh , Sung Hun Kim , Seungsun Choi , Muntae Hwang , Hyunbok Lee , Hong Seok Lee , Mee-Yi Ryu","doi":"10.1016/j.cap.2024.12.004","DOIUrl":"10.1016/j.cap.2024.12.004","url":null,"abstract":"<div><div>Organic–inorganic halide perovskites show great potential, but their commercialization faces challenges due to instability, requiring controlled synthesis environments. Antisolvent engineering offers a solution by improving the formation of perovskite films under ambient conditions. In this study, CsPbBr<sub>3</sub> nanocrystals (NCs) were added to the antisolvent to enhance the performance and stability of perovskite solar cells (PSCs). By optimizing the NC concentration and the mixing ratio of antisolvents, we systematically examined their impact on film deposition. The inclusion of CsPbBr<sub>3</sub> NCs improved PSC efficiency, with the highest power conversion efficiency of 19.99 % achieved at 0.01 mg/mL NC concentration. Additionally, NC-added films demonstrated better long-term stability, losing only 12.5 % efficiency after 80 days compared to a 47.1 % loss in pristine films. These results highlight the potential of NC-assisted antisolvent engineering for producing stable, high-performance PSCs.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 37-45"},"PeriodicalIF":2.4,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170302","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}

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Experimental and theoretical methods of practicing current applied physics, Part II 电流应用物理实践的实验与理论方法，第二部分

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-11 DOI: 10.1016/j.cap.2024.12.003

Gee Yeong Kim, Geol Moon, Woo Seok Choi

引用次数: 0

A compact triple-band CPW-fed antenna laminated on FR-4 dielectric substrate material for diverse wireless applications 一种紧凑的三波段cpw馈电天线层压在FR-4介电基材上，适用于各种无线应用

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2024-12-10 DOI: 10.1016/j.cap.2024.12.002

Sandeep Kumar Singh , Yamiko Daniel Banda , Manish Kumar , Anupam Kumar Yadav , Har Mohan Singh , M.Z.A. Yahya , S.N.F. Yusuf , Markus Diantoro

{"title":"A compact triple-band CPW-fed antenna laminated on FR-4 dielectric substrate material for diverse wireless applications","authors":"Sandeep Kumar Singh , Yamiko Daniel Banda , Manish Kumar , Anupam Kumar Yadav , Har Mohan Singh , M.Z.A. Yahya , S.N.F. Yusuf , Markus Diantoro","doi":"10.1016/j.cap.2024.12.002","DOIUrl":"10.1016/j.cap.2024.12.002","url":null,"abstract":"<div><div>This paper investigates a compact Spider-wave hexagonal-shaped radiating stub Coplanar Waveguide (CPW)-fed multiband Microstrip Patch Antenna (MPA) for triple-band wireless applications. The proposed antenna dimension (L × W × h) is 30 × 35 × 1.6 mm<sup>3</sup> laminated on FR-4 dielectric substrate material with a dielectric constant (ε<sub>r</sub>) 4.4. The proposed antenna operates for 4th Generation Mobile Networks (4G; 2–8 GHz), 5th Generation Mobile Networks (5G; 3.6–6 GHz, bandwidth 50–400 MHz), and 6th Generation Mobile Networks (6G; Midband, 7.0–20 GHz; bandwidth >160 MHz) at resonating frequencies of 3.27 GHz, 5.89 GHz, and 8.29 GHz, respectively. It shows that the proposed antenna is highly matched to input impedance and considering reflection coefficients (|S<sub>11</sub>|) of −28 dB at 3.27 GHz, −25 dB at 5.89 GHz, and −23 dB at 8.29 GHz, respectively, for triple-band applications. This compact design can be used in modern wireless communication systems requiring operation on multiple bands.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"71 ","pages":"Pages 27-36"},"PeriodicalIF":2.4,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170301","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