Chinese Physics B最新文献_第9页

Moiré superlattices arising from growth induced by screw dislocations in layered materials 层状材料中螺钉位错诱导生长所产生的莫伊里超晶格

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cdc

Fuyu Tian, M. Faizan, Xin He, Yuanhui Sun, Lijun Zhang

引用次数: 0

Control of interfacial reaction and defect formation in Gd/Bi2Te2.7Se0.3 composites with excellent thermoelectric and magnetocaloric properties 控制 Gd/Bi2Te2.7Se0.3 复合材料中的界面反应和缺陷形成，使其具有优异的热电和磁致电特性

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cd3

Tianchang Xue, Ping Wei, Chengshan Liu, Longzhou Li, Wanting Zhu, Xiaolei Nie, Wenyu Zhao

引用次数: 0

Critical behavior of the quasi-two-dimensional ferromagnet Cr1.04Te2 准二维铁磁体 Cr1.04Te2 的临界行为

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cd8

Wei Niu, Qin-Xin Song, Shiqi Chang, Min Wang, Kui Yuan, Jia-Cheng Gao, Shuo Wang, Zhen-Dong Wang, Kai-Fei Liu, Ping Liu, Yong-Bing Xu, Xiaoqian Zhang, Yong Pu

{"title":"Critical behavior of the quasi-two-dimensional ferromagnet Cr1.04Te2","authors":"Wei Niu, Qin-Xin Song, Shiqi Chang, Min Wang, Kui Yuan, Jia-Cheng Gao, Shuo Wang, Zhen-Dong Wang, Kai-Fei Liu, Ping Liu, Yong-Bing Xu, Xiaoqian Zhang, Yong Pu","doi":"10.1088/1674-1056/ad4cd8","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4cd8","url":null,"abstract":"\u0000 The self-intercalation of Cr into pristine two-dimensional (2D) van der Waals ferromagnetic CrTe2, which forms chromium tellurides (CrxTe2), has garnered interests due to their remarkable magnetic characteristics and the wide variety of chemical compositions available. Here, comprehensive basic characterization and magnetic studies are conducted on quasi-2D ferromagnetic Cr1.04Te2 crystals. Measurements of the isothermal magnetization curves are conducted around the critical temperature to systematically investigate the critical behavior. Specifically, the critical exponents β = 0.2399, γ = 0.8590, and δ = 4.3498, as well as the Curie temperature T\u0000 C = 249.56 K, are determined using various methods, including a modified Arrott plots, the Kouvel-Fisher method, the Widom scaling method, and the critical isotherm analysis. These results indicate that the tricritical mean-field model accurately represents the critical behavior of Cr1.04Te2. A magnetic phase diagram with tricritical phenomenon is thus constructed. Further investigations confirmed that the critical exponents obtained conform to the scalar equation near T\u0000 C, indicating their self-consistency and reliability. Our work sheds light on the magnetic properties of quasi-2D Cr1.04Te2, broadening the scope of the van der Waals crystals for developments of future spintronic devices operable at room temperature.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"6 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140963812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of dielectric anisotropy in liquid crystal mixtures with nematic and smectic phases 向列相和共晶相液晶混合物中的介电各向异性研究

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cd7

Xing-Zhou Tang, Jia-Yao Ye, Zi-Ye Wang, Hao-Yi Jiang, Xiao-Hu Shang, Zhao-Yan Yang, Bing-Xiang Li

引用次数: 0

Tuning the diffusion constant to optimize the readout of the positional information of spatial concentration patterns 调整扩散常数，优化空间浓度模式位置信息的读取

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cda

Ka Kit Kong, Chunxiong Luo, Feng Liu

引用次数: 0

Detecting the Core of a Network by the Centrality of the Nodes 通过节点中心性检测网络核心

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cd4

Peijie Ma, Xuezao Ren, Jun-fang Zhu, Yanqun Jiang

引用次数: 0

Deep-subwavelength single grooves prepared by femtosecond laser direct writing on Si 利用飞秒激光直写技术在硅上制备深亚波长单槽

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cd6

Rui-xi Ye, Min Huang

{"title":"Deep-subwavelength single grooves prepared by femtosecond laser direct writing on Si","authors":"Rui-xi Ye, Min Huang","doi":"10.1088/1674-1056/ad4cd6","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4cd6","url":null,"abstract":"\u0000 It is well known that, femtosecond-laser pulses are easy to spontaneously induce deep-subwavelength periodic surface structures on transparent dielectrics, but not on non-transparent semiconductors. Nevertheless, in the study we demonstrate that by high-NA 800-nm femtosecond-laser direct writing with controlling the pulse energy and scanning speed in the near-damage-threshold regime, polarization-dependent deep-subwavelength single grooves with linewidths of ~180 nm can be controllably prepared on Si. Generally, the single-groove linewidth increases slightly with the increase of pulse energy and the decrease of scanning speed, whereas the single-groove depth significantly increases from ~300 to ~600 nm with the decrease of scanning speed, or even over 1 μm with the multi-processing, indicating the characteristics of transversal clamping and longitudinal growing of such deep-subwavelength single grooves. Then, EDS composition analysis of the near-groove region confirms that the single-groove formation tends to be an ultrafast, non-thermal ablation process, and the oxidized deposits nearby the grooves are easy to clean up. Furthermore, the results showing the strong dependence of groove orientation on laser polarization, and the occurrence of double-groove structures due to the interference of pre-formed orthogonal grooves, both indicate that the extraordinary field enhancement of strong polarization sensitiveness in the deep-subwavelength groove plays an important role for single-groove growth with high stability and collimation.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"46 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140964798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep learning-assisted Common Temperature Measurement Based on Visible Light Imaging 基于可见光成像的深度学习辅助普通温度测量

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cd9

Jia-Yi Zhu, Zhi-Min He, Cheng Huang, Jun Zeng, Hui-Chuan Lin, Fu-Chang Chen, Chaoqun Yu, Yan Li, Yong-Tao Zhang, Huan-Ting Chen, Ji-Xiong Pu

{"title":"Deep learning-assisted Common Temperature Measurement Based on Visible Light Imaging","authors":"Jia-Yi Zhu, Zhi-Min He, Cheng Huang, Jun Zeng, Hui-Chuan Lin, Fu-Chang Chen, Chaoqun Yu, Yan Li, Yong-Tao Zhang, Huan-Ting Chen, Ji-Xiong Pu","doi":"10.1088/1674-1056/ad4cd9","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4cd9","url":null,"abstract":"\u0000 Real-time, contact-free temperature monitoring of low to medium range (30°C ~ 150 °C) has been extensively used in industry and agriculture, which is usually realized by costly infrared temperature detection methods. This paper proposes an alternative approach of extracting temperature information in real time from the visible light images of the monitoring target using a convolutional neural network (CNN). A mean square error of ＜ 1.119 °C was reached in the temperature measurements of low to medium range using the CNN and the visible light images. Imaging angle and imaging distance do not affect the temperature detection using visible optical images by the CNN. Moreover, the CNN has a certain illuminance generalization ability capable of detection temperature information from the images which were collected under different illuminance and were not used for training. Compared to the conventional machine learning algorithms mentioned in the recent literatures, this real-time, contact-free temperature measurement approach that does not require any further image processing operations facilitates temperature monitoring applications in the industrial and civil fields.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"50 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140965818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Subtraction of liposome signals in cryo-EM structural determination of protein-liposome complexes 在低温电子显微镜结构测定蛋白质-脂质体复合物时减去脂质体信号

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cdb

Shouqing Li, Ming Li, Yumei Wang, Xueming Li

引用次数: 0

Single Crystal Growth and Transport Properties of Narrow Band Gap Semiconductor RhP2 窄带隙半导体 RhP2 的单晶生长和传输特性

Chinese Physics B Pub Date : 2024-05-17 DOI: 10.1088/1674-1056/ad4cd5

De Sheng Wu, Ping Zheng, Jian Lin Luo

{"title":"Single Crystal Growth and Transport Properties of Narrow Band Gap Semiconductor RhP2","authors":"De Sheng Wu, Ping Zheng, Jian Lin Luo","doi":"10.1088/1674-1056/ad4cd5","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4cd5","url":null,"abstract":"\u0000 Here, we report the growth of high-quality single crystals of RhP2, and systematically study its structure and physical properties by transport, magnetism, and heat capacity measurements. Single-crystal X-ray diffraction revealed RhP2 adopts a monoclinic structure with the cell parameters a=5.7347(10) Å, b=5.7804(11) Å, and c=5.8222(11) Å, space group P21/c (No. 14). The electrical resistivity ρ(T) measurements indicate that RhP2 exhibits a narrow band gap behavior with the activation energies of 223.1 m eV and 27.4 m eV for two distinct regions, respectively. The temperature-dependent Hall effect measurements show electron domain transport behavior with a low charge carrier concentration. We found that RhP2 has a high mobility μe~210 cm2v-1s-1 with carrier concentrations ne~3.3×1018 cm-3 at 300 K with a narrow band gap feature. The high mobility μe reached a maximum of approximately 340 cm2v-1s-1 with carrier concentrations ne~2×1018 cm-3 at 100 K. No magnetic phase transitions were observed from the susceptibility χ(T) and specific heat Cp(T) measurements of RhP2. Our results not only offer effective potential as a material platform for studying exotic physical properties and electron band structures but also motivate further exploration of their potential photovoltaic and optoelectronic applications.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"8 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140964193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0