Chinese Physics B最新文献

In-situ deposited anti-aging TiN capping layer for Nb superconducting quantum circuits 用于铌超导量子电路的原位沉积抗老化 TiN 盖层

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-09-01 DOI: 10.1088/1674-1056/ad6a3c

Hao-Ran Tao, Lei Du, Liang-Liang Guo, Yong Chen, Hai-Feng Zhang, Xiao-Yan Yang, Guo-Liang Xu, Chi Zhang, Zhi-Long Jia, Peng Duan, Guo-Ping Guo

引用次数: 0

Imaging a force field via an optically levitated nanoparticle array 通过光学悬浮纳米粒子阵列成像力场

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-09-01 DOI: 10.1088/1674-1056/ad6b86

Bihu Lv, Jiandong Zhang, Chuang Li

引用次数: 0

Theoretical insights into the structures and fundamental properties of pnictogen nitrides 对氮化镤结构和基本特性的理论见解

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-09-01 DOI: 10.1088/1674-1056/ad6a07

Jingjing Wang, Panlong Kong, Dingmei Zhang, Defang Gao, Zaifu Jiang, Wei Dai

{"title":"Theoretical insights into the structures and fundamental properties of pnictogen nitrides","authors":"Jingjing Wang, Panlong Kong, Dingmei Zhang, Defang Gao, Zaifu Jiang, Wei Dai","doi":"10.1088/1674-1056/ad6a07","DOIUrl":"https://doi.org/10.1088/1674-1056/ad6a07","url":null,"abstract":"Recent experimental advancements reported a chemical reaction between antimony and nitrogen under high temperature and high pressure, yielding crystalline antimony nitride (Sb3N5) with an orthorhombic structure. Motivated by this statement, we calculate the stability, elastic properties, electronic properties and energy density of the <italic toggle=\"yes\">Cmc</italic>21 structure for pnictogen nitrides <italic toggle=\"yes\">X</italic>3N5 (<italic toggle=\"yes\">X</italic> = P, As, Sb, and Bi) using first-principles calculations combined with particle swarm optimization algorithms. Calculations of formation enthalpies, elastic constants and phonon spectra show that P3N5, As3N5 and Sb3N5 are thermodynamically, mechanically and kinetically stable at 35 GPa, whereas Bi3N5 is mechanically and kinetically stable but thermodynamically unstable. The computed electronic density of states shows strong covalent bonding between the N atoms and the phosphorus group atoms in the four compounds, confirmed by the calculated electronic localization function. We also calculate the energy densities for Sb3N5 and find it to be a potentially high-energy-density material.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209258","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

Coupling and characterization of a Si/SiGe triple quantum dot array with a microwave resonator 硅/硅锗三量子点阵列与微波谐振器的耦合和特性分析

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-09-01 DOI: 10.1088/1674-1056/ad711d

Shun-Li Jiang, Tian-Yi Jiang, Yong-Qiang Xu, Rui Wu, Tian-Yue Hao, Shu-Kun Ye, Ran-Ran Cai, Bao-Chuan Wang, Hai-Ou Li, Gang Cao, Guo-Ping Guo

{"title":"Coupling and characterization of a Si/SiGe triple quantum dot array with a microwave resonator","authors":"Shun-Li Jiang, Tian-Yi Jiang, Yong-Qiang Xu, Rui Wu, Tian-Yue Hao, Shu-Kun Ye, Ran-Ran Cai, Bao-Chuan Wang, Hai-Ou Li, Gang Cao, Guo-Ping Guo","doi":"10.1088/1674-1056/ad711d","DOIUrl":"https://doi.org/10.1088/1674-1056/ad711d","url":null,"abstract":"Scaling up spin qubits in silicon-based quantum dots is one of the pivotal challenges in achieving large-scale semiconductor quantum computation. To satisfy the connectivity requirements and reduce the lithographic complexity, utilizing the qubit array structure and the circuit quantum electrodynamics (cQED) architecture together is expected to be a feasible scaling scheme. A triple-quantum dot (TQD) coupled with a superconducting resonator is regarded as a basic cell to demonstrate this extension scheme. In this article, we investigate a system consisting of a silicon TQD and a high-impedance TiN coplanar waveguide (CPW) resonator. The TQD can couple to the resonator via the right double-quantum dot (RDQD), which reaches the strong coupling regime with a charge–photon coupling strength of <italic toggle=\"yes\">g</italic>0/(2<italic toggle=\"yes\">π</italic>) = 175 MHz. Moreover, we illustrate the high tunability of the TQD through the characterization of stability diagrams, quadruple points (QPs), and the quantum cellular automata (QCA) process. Our results contribute to fostering the exploration of silicon-based qubit integration.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209229","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

Probing nickelate superconductors at atomic scale: A STEM review 在原子尺度上探测镍酸盐超导体：STEM 综述

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-09-01 DOI: 10.1088/1674-1056/ad6a0d

Yihan Lei, Yanghe Wang, Jiahao Song, Jinxin Ge, Dirui Wu, Yingli Zhang, Changjian Li

引用次数: 0

Preparation and magnetic hardening of low Ti content (Sm,Zr)(Fe,Co,Ti)12 magnets by rapid solidification non-equilibrium method 用快速凝固非平衡法制备低钛含量 (Sm,Zr)(Fe,Co,Ti)12磁体并对其进行磁强化

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-09-01 DOI: 10.1088/1674-1056/ad58c4

Xing-Feng Zhang, Li-Bin Liu, Yu-Qing Li, Dong-Tao Zhang, Wei-Qiang Liu, Ming Yue

{"title":"Preparation and magnetic hardening of low Ti content (Sm,Zr)(Fe,Co,Ti)12 magnets by rapid solidification non-equilibrium method","authors":"Xing-Feng Zhang, Li-Bin Liu, Yu-Qing Li, Dong-Tao Zhang, Wei-Qiang Liu, Ming Yue","doi":"10.1088/1674-1056/ad58c4","DOIUrl":"https://doi.org/10.1088/1674-1056/ad58c4","url":null,"abstract":"The Sm–Zr–Fe–Co–Ti quinary-alloys with ThMn12 structure has attracted wide attention for ultra-high intrinsic magnetic properties, showing potentiality to be developed into rare-earth permanent magnets. The Ti element in alloys is crucial for phase stability and magnetic properties, and lower Ti content can increase intrinsic magnetic properties but reduce phase stability. In this study, the 1:12 single-phase melt-spun ribbons with low Ti content was successfully prepared using a rapid solidification non-equilibrium method for the Sm1.1Zr0.2Fe9.2Co2.3Ti0.5 quinary-alloy. However, this non-equilibrium ribbon did not achieve good magnetic hardening due to the uneven microstructure and microstrain. Then, annealing was carried out to eliminate micro-strain and homogenize microstructure, therefore, remanence and coercivity were significantly improved even the precipitation of a small amount of <italic toggle=\"yes\">α</italic>-Fe phase which were not conducive to coercivity. The remanence of 86.1 emu/g and coercivity of 151 kA/m was achieved when annealing at 850 °C for 45 min. After hot pressing, under the action of high temperature and pressure, a small portion of ThMn12 phases in the magnet decompose into Sm-rich phases and <italic toggle=\"yes\">α</italic>-Fe, while remanence of 4.02 kGs (1 Gs = 10−4 T), and coercivity of 1.12 kOe (1 Oe = 79.5775 A⋅m−1) were still acquired. Our findings can provide reference for exploring practical permanent magnets made of 1:12 type quinary-alloys.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209233","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

Quantum confinement of carriers in the type-I quantum wells structure I 型量子阱结构中载流子的量子约束

IF 1.7 4区物理与天体物理

Chinese Physics B Pub Date : 2024-09-01 DOI: 10.1088/1674-1056/ad5d99

Xinxin Li, Zhen Deng, Yang Jiang, Chunhua Du, Haiqiang Jia, Wenxin Wang, Hong Chen

{"title":"Quantum confinement of carriers in the type-I quantum wells structure","authors":"Xinxin Li, Zhen Deng, Yang Jiang, Chunhua Du, Haiqiang Jia, Wenxin Wang, Hong Chen","doi":"10.1088/1674-1056/ad5d99","DOIUrl":"https://doi.org/10.1088/1674-1056/ad5d99","url":null,"abstract":"Quantum confinement is recognized to be an inherent property in low-dimensional structures. Traditionally, it is believed that the carriers trapped within the well cannot escape due to the discrete energy levels. However, our previous research has revealed efficient carrier escape in low-dimensional structures, contradicting this conventional understanding. In this study, we review the energy band structure of quantum wells along the growth direction considering it as a superposition of the bulk material dispersion and quantization energy dispersion resulting from the quantum confinement across the whole Brillouin zone. By accounting for all wave vectors, we obtain a certain distribution of carrier energy at each quantized energy level, giving rise to the energy subbands. These results enable carriers to escape from the well under the influence of an electric field. Additionally, we have compiled a comprehensive summary of various energy band scenarios in quantum well structures relevant to carrier transport. Such a new interpretation holds significant value in deepening our comprehension of low-dimensional energy bands, discovering new physical phenomena, and designing novel devices with superior performance.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142209232","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

Statistical properties of ideal photons in a 2D dye-filled spherical cap cavity 二维染料填充球形帽腔中理想光子的统计特性

IF 1.5 4区物理与天体物理

Chinese Physics B Pub Date : 2024-08-08 DOI: 10.1088/1674-1056/ad6cc9

Ze Cheng

引用次数: 0

Reconstruction algorithm for cross-waveband optical computing imaging 跨波段光学计算成像的重建算法

IF 1.5 4区物理与天体物理

Chinese Physics B Pub Date : 2024-08-08 DOI: 10.1088/1674-1056/ad6ccc

Jin-Tao Xie, Shu-Hang Bie, Ming-Fei Li, Yuan-Jin Yu, Yi-Fei Li, Jin-Guang Wang, Bao-Gang Quan, Ling-An Wu

引用次数: 0

Broadband Third-Order Optical Nonlinearities of Layered Franckeite Towards Mid-Infrared Regime 层状方解石迈向中红外区的宽带三阶光学非线性特性

IF 1.5 4区物理与天体物理

Chinese Physics B Pub Date : 2024-08-08 DOI: 10.1088/1674-1056/ad6ccb

Zhi-Qiang Xu, Tian-Tian Zhou, Jie Li, Dong-Yang Liu, Yuan He, Ning Li, Xiao Liu, Li-Li Miao, Chujun Zhao, Shuang-Chun Wen

{"title":"Broadband Third-Order Optical Nonlinearities of Layered Franckeite Towards Mid-Infrared Regime","authors":"Zhi-Qiang Xu, Tian-Tian Zhou, Jie Li, Dong-Yang Liu, Yuan He, Ning Li, Xiao Liu, Li-Li Miao, Chujun Zhao, Shuang-Chun Wen","doi":"10.1088/1674-1056/ad6ccb","DOIUrl":"https://doi.org/10.1088/1674-1056/ad6ccb","url":null,"abstract":"\u0000 The study of nonlinear optical responses in the mid-infrared (mid-IR) regime is essential for advancing ultrafast mid-IR laser applications. However, nonlinear optical effects under mid-IR excitation are rarely reported due to the lack of suitable nonlinear optical materials. The natural van der Waals heterostructure franckeite, known for its narrow bandgap and stability in air, shows great potential for developing mid-IR nonlinear optical devices. We have experimentally demonstrated that layered franckeite exhibits a broadband wavelength-dependent nonlinear optical response in the mid-IR spectral region. Franckeite nanosheets were prepared using a liquid-phase exfoliation method, and their nonlinear optical response was characterized in the 3000 nm to 5000 nm spectral range. The franckeite nanosheets exhibit broadband wavelength-dependent third-order nonlinearities, with nonlinear absorption and refraction coefficients estimated to be about 10-7 cm/W and 10-11 cm2/W, respectively. Additionally, a passively Q-switched fluoride fiber laser operating around a wavelength of 2800 nm was achieved, delivering nanosecond pulses with a signal-to-noise ratio of 43.6 dB, based on the nonlinear response of franckeite. These findings indicate that layered franckeite possesses broadband nonlinear optical characteristics in the mid-IR region, potentially enabling new possibilities for mid-IR photonic devices.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141929524","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