Chinese Physics B最新文献_第10页

Optical storage of circular airy beam in atomic vapor 原子蒸气中圆形空气光束的光学存储

Chinese Physics B Pub Date : 2024-05-15 DOI: 10.1088/1674-1056/ad4bbf

Hong Chang, Xin Yang, Yan Ma, Xin Yang, Mingtao Cao, Xiaofei Zhang, Ruifang Dong, Shougang Zhang

引用次数: 0

Multi-objective-Global-Optimization-Approach Predicted Quasi-Layered Ternary TiOS Crystals with Promising Photocatalytic Properties 多目标全局优化方法预测出具有良好光催化性能的准层状三元 TiOS 晶体

Chinese Physics B Pub Date : 2024-05-15 DOI: 10.1088/1674-1056/ad4bc3

Yi-Jie Xiang, Siyan Gao, Chunlei Wang, Haiping Fang, Xiangmei Duan, Yi-Feng Zheng, Yue-Yu Zhang

{"title":"Multi-objective-Global-Optimization-Approach Predicted Quasi-Layered Ternary TiOS Crystals with Promising Photocatalytic Properties","authors":"Yi-Jie Xiang, Siyan Gao, Chunlei Wang, Haiping Fang, Xiangmei Duan, Yi-Feng Zheng, Yue-Yu Zhang","doi":"10.1088/1674-1056/ad4bc3","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4bc3","url":null,"abstract":"\u0000 Titanium dioxide (TiO2) has attracted considerable research attentions for its promising applications in solar cells and photocatalytic devices. However, the intrinsic challenge lies in the relatively low energy conversion efficiency of TiO2, primarily attributed to the substantial band gaps (exceeding 3.0 eV) associated with its rutile and anatase phases. Leveraging multi-objective global optimization, we have identified two quasi-layered ternary Ti-O-S crystals, composed of titanium, oxygen and sulfur. The calculations of formation energy, phonon dispersions, and thermal stability confirm the chemical, dynamical and thermal stability of these newly discovered phases. Employing the state-of-art hybrid density functional approach and many-body perturbation theory (quasiparticle GW approach and Bethe-Salpeter equation), we calculate the optical properties of both the TiOS phases. Significantly, both phases show favorable photocatalytic characteristics, featuring band gaps suitable for visible optical absorption and appropriate band alignments with water for effective charge carrier separation. Therefore, ternary compound TiOS hold the potential for achieving high-efficiency photochemical conversion, showing our multi-objective global optimization provides a new approach for novel environmental and energy materials design with multicomponent compounds.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"118 42","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140977890","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

Steering the energy sharing of electrons in nonsequential double ionization with orthogonally polarized two-color field 用正交偏振双色场引导非连续双电离中电子的能量共享

Chinese Physics B Pub Date : 2024-05-15 DOI: 10.1088/1674-1056/ad4bc0

Guangqi Fan, Zhijie Yang, Fenghao Sun, Jinmei Zheng, Yuntian Han, Mingqian Huang, Qingcao Liu

{"title":"Steering the energy sharing of electrons in nonsequential double ionization with orthogonally polarized two-color field","authors":"Guangqi Fan, Zhijie Yang, Fenghao Sun, Jinmei Zheng, Yuntian Han, Mingqian Huang, Qingcao Liu","doi":"10.1088/1674-1056/ad4bc0","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4bc0","url":null,"abstract":"\u0000 Using the semiclassical ensemble model, the dependence of relative amplitude for the recollision dynamics in nonsequential double ionization (NSDI) of neon atom driven by the orthogonally polarized two-color field (OTC) laser field was theoretically studied. And the dynamics in two typical collision pathways, recollision-impact-ionization (RII) and recollision-excitation with subsequent ionization (RESI) is systematically explored. Our results reveal that the V-shaped structure in the correlated momentum distribution is mainly caused by the RII mechanism when relative amplitude of OTC laser field is zero, and the first ionized electrons will quickly skim through the nucleus and share few energy with the second electron. As the relative amplitude increases, the V-shaped structure gradually disappears and electrons are concentrated on the diagonal in the electron correlation spectrum indicating that the energy sharing after electrons collision is symmetric for OTC laser fields with large relative amplitudes. Our studies show that changing the relative amplitude of the OTC laser field can efficiently control the electron-electron collisions and energy exchange efficiency of the NSDI process.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"68 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140971775","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

Intrinsic valley-polarized quantum anomalous Hall effect in a two-dimensional germanene/MnI2 van der Waals heterostructure 二维锗/锰离子范德华异质结构中的本征谷极化量子反常霍尔效应

Chinese Physics B Pub Date : 2024-05-15 DOI: 10.1088/1674-1056/ad4bbd

Xiao-jing Dong, Chang-Wen Zhang

引用次数: 0

All-electron basis sets for H to Xe specific for ZORA calculations: Applications in atoms and molecules 用于 ZORA 计算的 H 至 Xe 的全电子基础集：原子和分子中的应用

Chinese Physics B Pub Date : 2024-05-15 DOI: 10.1088/1674-1056/ad4bbe

C. S. Gomes, F. E. Jorge, A. Canal Neto

引用次数: 0

Two-dimensional Sb net generated nontrivial topological states in SmAgSb2 probed by quantum oscillations 通过量子振荡探测 SmAgSb2 中二维 Sb 网产生的非难拓扑态

Chinese Physics B Pub Date : 2024-05-15 DOI: 10.1088/1674-1056/ad4bc2

Jian Yuan, Xian-Biao Shi, Hong Du, Tian Li, Chuanying Xi, Xia Wang, Wei Xia, Bao-Tian Wang, Ruidan Zhong, Yan-Feng Guo

引用次数: 0

Physics Package Based on Intracavity Laser Cooling 87Rb Atoms for Space Cold Atom Microwave Clock 基于腔内激光冷却 87Rb 原子的物理软件包，用于空间冷原子微波钟

Chinese Physics B Pub Date : 2024-05-15 DOI: 10.1088/1674-1056/ad4bc1

Siminda Deng, W. Ren, Jing-Feng Xiang, Jianbo Zhao, Lin Li, Di Zhang, J. Wan, Y. Meng, Xiaojun Jiang, Tang Li, Liang Liu, De-Sheng Lü

引用次数: 0

The evolution of anomalous Hall effect in ferromagnetic Weyl semimetal Nb x Zr1-x Co2Sn 铁磁性韦尔半金属 Nb x Zr1-x Co2Sn 中反常霍尔效应的演化

Chinese Physics B Pub Date : 2024-05-13 DOI: 10.1088/1674-1056/ad4a3b

Bo-wen Chen, Bing Shen

引用次数: 0

Surface phonon resonance: A new mechanism for enhancing photonic spin Hall effect and refractive index sensor 表面声子共振：增强光子自旋霍尔效应和折射率传感器的新机制

Chinese Physics B Pub Date : 2024-05-13 DOI: 10.1088/1674-1056/ad4a3c

Jie Cheng, Chenglong Wang, Yiming Li, Yalin Zhang, Shengli Liu, P. Dong

{"title":"Surface phonon resonance: A new mechanism for enhancing photonic spin Hall effect and refractive index sensor","authors":"Jie Cheng, Chenglong Wang, Yiming Li, Yalin Zhang, Shengli Liu, P. Dong","doi":"10.1088/1674-1056/ad4a3c","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4a3c","url":null,"abstract":"\u0000 Metal-based surface plasmon resonance (SPR) plays an important role in enhancing the photonic spin Hall effect (SHE) and developing sensitive optical sensors. However, the very large negative permittivities of metals limit their applications beyond the near-infrared regime. In this work, we theoretically present a new mechanism to enhance the photonic SHE by taking advantage of SiC-supported surface phonon resonance (SPhR) in the mid-infrared regime. The transverse displacement of photonic SHE is very sensitive to the wavelength of incident light and the thickness of SiC layer. Under the optimal parameter setup, the calculated largest transverse displacement of SiC-based SPhR structure reaches up to 163.8 μm, which is much larger than the condition of SPR. Moreover, a NO2 gas sensor based on the SPhR-enhanced photonic SHE is theoretically proposed with the superior sensing performance. Both the intensity and angle sensitivity of this sensor can be effectively manipulated by varying the damping rate of SiC. The results may provide a promising paradigm to enhance the photonic SHE in the mid-infrared region and open up new opportunity of highly sensitive refractive index sensors.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"63 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140983389","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

Magnetic domain structures in ultrathin Bi2Te3/CrTe2 heterostructures 超薄 Bi2Te3/CrTe2 异质结构中的磁畴结构

Chinese Physics B Pub Date : 2024-05-13 DOI: 10.1088/1674-1056/ad4a3a

Tirui Xia, Xiaotian Yang, Yifan Zhang, Xinqi Liu, Xinyu Cai, Chang Liu, Qi Yao, X. Kou, Wenbo Wang

{"title":"Magnetic domain structures in ultrathin Bi2Te3/CrTe2 heterostructures","authors":"Tirui Xia, Xiaotian Yang, Yifan Zhang, Xinqi Liu, Xinyu Cai, Chang Liu, Qi Yao, X. Kou, Wenbo Wang","doi":"10.1088/1674-1056/ad4a3a","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4a3a","url":null,"abstract":"\u0000 Chromium tellurium compounds are important two-dimensional van der Waals ferromagnetic materials with high Curie temperature and chemical stability in air, which is promising for applications in spintronic devices. Here, high-quality spin-orbital-torque (SOT) device, Bi2Te3/CrTe2 heterostructure was epitaxially grown on Al2O3 (0001) substrates. Anomalous Hall measurements indicate the existence of strong ferromagnetism in this device with the CrTe2 thickness down to 10 nm. In order to investigate its micromagnetic structure, cryogenic magnetic force microscope (MFM) was utilized to measure the magnetic domain evolutions at various temperatures and magnetic fields. The virgin domain state of the device shows a worm-like magnetic domain structure with the size around 0.6 ~ 0.8 µm. Larger irregular-shape magnetic domains (＞1µm) can be induced and pinned, after the field is increased to coercive field and ramped back to low fields. The temperature-dependent MFM signals exhibit a nice mean-field-like ferromagnetic transition with Curie temperature around 201.5 K, indicating a robust ferromagnetic ordering. Such device can be potentially implemented in future magnetic memory technology.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"27 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140982830","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