Chinese Physics Letters最新文献_第10页

New Painlevé integrable (3+1)-dimensional combined pKP–BKP equation: Lump and multiple soliton solutions 新的painlevev可积(3+1)维组合pKP-BKP方程:块解和多孤子解

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-11-06 DOI: 10.1088/0256-307x/40/12/120501

Abdul-Majid Wazwaz

引用次数: 0

Unconventional nonreciprocal voltage transition in Ag₂Te nanobelts Ag2Te纳米带中非常规非倒易电压跃迁

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-11-03 DOI: 10.1088/0256-307x/40/12/127201

Peng-Liang Leng, Xiang-Yu Cao, Qiang Ma, Lin-Feng Ai, Yu-Da Zhang, Jing-Lei Zhang, Fa-Xian Xiu

{"title":"Unconventional nonreciprocal voltage transition in Ag2Te nanobelts","authors":"Peng-Liang Leng, Xiang-Yu Cao, Qiang Ma, Lin-Feng Ai, Yu-Da Zhang, Jing-Lei Zhang, Fa-Xian Xiu","doi":"10.1088/0256-307x/40/12/127201","DOIUrl":"https://doi.org/10.1088/0256-307x/40/12/127201","url":null,"abstract":"Abstract The nonreciprocal effect always emerges in noncentrosymmetric materials for the intrinsic symmetry broken and high conductivity systems for the extrinsic thermoelectric effect. Meanwhile, nonreciprocal charge transport is widely unitized as an effective experimental tool to detect electrical unidirectional intrinsic contribution. Here we show an unconventional nonreciprocal voltage transition in topological insulator Ag 2 Te nanobelts. The nonreciprocal voltage develops from nearly zero to giant values under the applied current I ac and external magnetic fields, while remaining unchanged under various current I dc . This electrical unidirectional contribution is further evidenced by the differential resistance (d V /d I ) measurements. Furthermore, the transition possesses two-dimensional properties under a tilted magnetic field and occurs when the voltage between two electrodes exceeds a certain value. We propose a possible mechanism based on the development of edge channels in Ag 2 Te nanobelts to interpret the phenomenon. Our results not only introduce a peculiar nonreciprocal voltage transition in topological materials but also enrich the understanding of the intrinsic mechanism that strongly affects the nonreciprocal charge transport.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"11 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135868937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Asymmetry enhances thermal transport in porous metamaterials at low temperature 非对称性增强了低温下多孔超材料的热输运

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-11-03 DOI: 10.1088/0256-307x/40/12/124401

Yu Yang, Dengke Ma, Lifa Zhang

引用次数: 0

Status and prospects of exotic hadrons at Belle II 贝尔二世外来强子的现状与展望

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-11-03 DOI: 10.1088/0256-307x/40/12/121301

Sen Jia, Weitao Xiong, Chengping Shen

引用次数: 0

Preparation of Bi₂Te₃ based on saturable absorption system and its application in fiber lasers 基于饱和吸收系统的Bi2Te3制备及其在光纤激光器中的应用

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-11-02 DOI: 10.1088/0256-307x/40/11/114204

Haoyu Wang, Yue-Jia Xiao, Qi Liu, Xiao-Wei Xing, Hu-Jiang Yang, Wen-Jun Liu

{"title":"Preparation of Bi2Te3 based on saturable absorption system and its application in fiber lasers","authors":"Haoyu Wang, Yue-Jia Xiao, Qi Liu, Xiao-Wei Xing, Hu-Jiang Yang, Wen-Jun Liu","doi":"10.1088/0256-307x/40/11/114204","DOIUrl":"https://doi.org/10.1088/0256-307x/40/11/114204","url":null,"abstract":"Abstract Fiber laser is a fundamental component of laser systems and is of great significance for the development of laser technology. Its pulse output can be divided into Q-switched and mode-locked. Achieving ultrashort pulse with narrower pulse duration and higher power is the focus of current research on mode-locked lasers. As an important component of fiber laser systems, saturable absorber (SA) can modulate losses in the optical cavity and generate pulses, enabling the laser system to achieve pulse output under long-term normal operating conditions better. Therefore, expanding the selection range of materials with better saturable absorption properties to improve the quality of pulse output is an important topic in current research. In this paper, the second generation topological insulator Bi 2 Te 3 single crystal is prepared, and a ring fiber laser system is built with the Bi 2 Te 3 SA. The mode-locked pulse with a pulse duration of 288 fs and a signal-to-noise ratio (SNR) of 80.202 dB is realized. This result verifies that Bi 2 Te 3 , as a member of topological insulator, has good saturable absorption characteristics, and has broad prospects for the application research in lasers.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"19 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135973391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Chirp compensation for generating ultrashort attosecond pulses with 800-nm few-cycle pulses 用800纳米短周期脉冲产生超短阿秒脉冲的啁啾补偿

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-11-01 DOI: 10.1088/0256-307x/40/11/113201

Li Wang, Xiaowei Wang, Fan Xiao, Jiacan Wang, Wenkai Tao, Dongwen Zhang, Zengxiu Zhao

引用次数: 0

Prediction of Thermal Conductance of Complex Networks with Deep Learning 利用深度学习预测复杂网络的热传导率

IF 3.5 2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-11-01 DOI: 10.1088/0256-307x/40/12/124402

Changliang Zhu, Xiangying Shen, Guimei Zhu, Baowen Li

{"title":"Prediction of Thermal Conductance of Complex Networks with Deep Learning","authors":"Changliang Zhu, Xiangying Shen, Guimei Zhu, Baowen Li","doi":"10.1088/0256-307x/40/12/124402","DOIUrl":"https://doi.org/10.1088/0256-307x/40/12/124402","url":null,"abstract":"Predicting thermal conductance of complex networks poses a formidable challenge in the field of materials science and engineering. This challenge arises due to the intricate interplay between the parameters of network structure and thermal conductance, encompassing connectivity, network topology, network geometry, node inhomogeneity, and others. Our understanding of how these parameters specifically influence heat transfer performance remains limited. Deep learning offers a promising approach for addressing such complex problems. We find that the well-established convolutional neural network models AlexNet can predict the thermal conductance of complex network efficiently. Our approach further optimizes the calculation efficiency by reducing the image recognition in consideration that the thermal transfer is inherently encoded within the Laplacian matrix. Intriguingly, our findings reveal that adopting a simpler convolutional neural network architecture can achieve a comparable prediction accuracy while requiring less computational time. This result facilitates a more efficient solution for predicting the thermal conductance of complex networks and serves as a reference for machine learning algorithm in related domains.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"29 4 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138684118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Resonant Charge Transport Assisted by the Molecular Vibration in Single-molecule Junction from Time-domain Ab Initio Nonadiabatic Molecular Dynamics Simulations 单分子结中分子振动辅助的共振电荷输运:时域从头算非绝热分子动力学模拟

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-10-27 DOI: 10.1088/0256-307x/40/12/126301

Yunzhe Tian, Qijing Zheng, Jin Zhao

引用次数: 0

Anomalous thermal transport across the superionic transition in ice 冰中超离子跃迁的异常热输运

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-10-27 DOI: 10.1088/0256-307x/40/11/116301

Rong Qiu, Qiyu Zeng, Han Wang, Dongdong Kang, Xiaoxiang Yu, Jiayu Dai

{"title":"Anomalous thermal transport across the superionic transition in ice","authors":"Rong Qiu, Qiyu Zeng, Han Wang, Dongdong Kang, Xiaoxiang Yu, Jiayu Dai","doi":"10.1088/0256-307x/40/11/116301","DOIUrl":"https://doi.org/10.1088/0256-307x/40/11/116301","url":null,"abstract":"Abstract Superionic ices with highly mobile protons within the stable oxygen sub-lattice occupy an important proportion of the phase diagram of ice and widely exist in the interior of icy giants and throughout the universe. Understanding the thermal transport in superionic ice is vital for the thermal evolution of icy planets. However, it is highly challenging due to the extreme thermodynamic conditions and dynamical nature of protons, beyond the capability of the traditional lattice dynamics and empirical potential molecular dynamics approaches. In this work, by utilizing the deep potential molecular dynamics approach, we investigate the thermal conductivity of ice-VII and superionic ice-VII” along the isobar of p = 30 GPa. A non-monotonic trend of thermal conductivity with elevated temperature is observed. Through heat flux decomposition and trajectory-based spectra analysis, we show that the thermally-activated proton diffusion in ice-VII and superionic ice-VII” contribute significantly to heat convection, while the broadening in vibrational energy peaks and significant softening of transverse acoustic branches lead to a reduction in heat conduction. The competition between proton diffusion and phonon scattering results in anomalous thermal transport across the superionic transition in ice. This work unravels the important role of proton diffusion in the thermal transport of high-pressure ice. Our approach provides new insights into modeling the thermal transport and atomistic dynamics in superionic materials.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Modifying the electron dynamics in high-order harmonic generation via two-color laser field 利用双色激光场修正高次谐波产生中的电子动力学

2区物理与天体物理

Chinese Physics Letters Pub Date : 2023-10-26 DOI: 10.1088/0256-307x/40/12/124201

Cai-Ping Zhang, Xiang-Yang Miao

引用次数: 0