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  1. Article ; Online: Structure searches and superconductor discovery in XB

    Meng, Jingjing / Zheng, Pengyu / Peng, Yiran / Liu, Rui / Yang, Ying / Yin, Zhiping

    RSC advances

    2024  Volume 14, Issue 15, Page(s) 10507–10515

    Abstract: With extensive structure searches for ... ...

    Abstract With extensive structure searches for XB
    Language English
    Publishing date 2024-04-02
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d3ra08746h
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: A GA-based online real-time optimized energy management strategy for plug-in hybrid electric vehicles

    Fan, Likang / Wang, Yufei / Wei, Hongqian / Zhang, Youtong / Zheng, Pengyu / Huang, Tianyi / Li, Wei

    Energy. 2022 Feb. 15, v. 241

    2022  

    Abstract: The performance of plug-in hybrid electric vehicles (PHEVs) depends on the energy management strategy (EMS). An optimal EMS can maximize energy utilization by coordinating the battery energy and fuel consumption. However, the real-time EMS remains a ... ...

    Abstract The performance of plug-in hybrid electric vehicles (PHEVs) depends on the energy management strategy (EMS). An optimal EMS can maximize energy utilization by coordinating the battery energy and fuel consumption. However, the real-time EMS remains a challenge due to the multiple dynamic parameters. To this end, this paper proposed a real-time EMS based on the adaptive regulation of multiple parameters including the driving cycle, driving distance and battery state of charge (SOC). First, the rule-based EMS (RB-EMS) is designed, in which the operative threshold of the charge depleting mode (CD) and charge sustaining (CS) mode are initially determined through engineering experience considering the engine and battery SOC characteristics. Meanwhile, equivalent consumption minimization strategy (ECMS) is utilized to replace the traditional rules in the CD-CS region, which benefits to find the real-time optimal solution in a wider range and simultaneously addresses the fixed torque distribution between the engine and motor in the RB strategy. After then, to improve the adaptability of EMS in different driving cycles, the threshold in the RB strategy and equivalent factor (s(t)) in the ECMS strategy with different driving distances and initial SOC values are optimized with a global genetic algorithm (GA). Besides, a driving cycle recognition algorithm (DCR) based on fuzzy logic is online executed with GPS and onboard sensors, with which the optimal engine and motor torque distribution under the current conditions are adaptively determined according to the identified driving cycles and the above-mentioned offline results. Finally, the proposed adaptive hybrid energy management (HEM) approach was validated by the numerical simulation and hard-in-loop (HIL) experiments. Results show that the proposed HEM strategy can adaptively change the dynamic parameters to achieve the optimized CD stage in real-time; meanwhile, it can achieve a suboptimal result compared with DP which has reduced the fuel consumption by 14.82% for high power demand level.
    Keywords algorithms ; batteries ; energy ; energy use and consumption ; fuzzy logic ; torque
    Language English
    Dates of publication 2022-0215
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2019804-8
    ISSN 0360-5442 ; 0360-5442
    ISSN (online) 0360-5442
    ISSN 0360-5442
    DOI 10.1016/j.energy.2021.122811
    Database NAL-Catalogue (AGRICOLA)

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  3. Article ; Online: Computational design of a new layered superconductor LaOTlF

    Yuan, Zhihong / Meng, Jingjing / Liu, Rui / Zheng, Pengyu / Ma, Xiaobo / Wang, Guangwei / Yu, Tianye / Peng, Yiran / Yin, Zhiping

    Physical chemistry chemical physics : PCCP

    2022  Volume 24, Issue 12, Page(s) 7331–7337

    Abstract: A new layered compound ... ...

    Abstract A new layered compound LaOTlF
    Language English
    Publishing date 2022-03-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 1476244-4
    ISSN 1463-9084 ; 1463-9076
    ISSN (online) 1463-9084
    ISSN 1463-9076
    DOI 10.1039/d1cp05518f
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Online: Observation of Kondo lattice and Kondo-enhanced anomalous Hall effect in an itinerant ferromagnet

    Cheng, Zi-Jia / Huang, Yuqing / Zheng, Pengyu / Chen, Lei / Cochran, Tyler A. / Hu, Haoyu / Yin, Jia-Xin / Yang, Xian P. / Hossain, Md Shafayat / Zhang, Qi / Belopolski, Ilya / Liu, Rui / Cheng, Guangming / Hashimoto, Makoto / Lu, Donghui / Xu, Xitong / Zhou, Huibin / Ma, Wenlong / Chang, Guoqing /
    Yao, Nan / Yin, Zhiping / Hasan, M. Zahid / Jia, Shuang

    2023  

    Abstract: The interplay between Kondo screening and magnetic interactions is central to comprehending the intricate phases in heavy-fermion compounds. However, the role of the itinerant magnetic order, which is driven by the conducting (c) electrons, has been ... ...

    Abstract The interplay between Kondo screening and magnetic interactions is central to comprehending the intricate phases in heavy-fermion compounds. However, the role of the itinerant magnetic order, which is driven by the conducting (c) electrons, has been largely uncharted in the context of heavy-fermion systems due to the scarcity of material candidates. Here we demonstrate the coexistence of the coherent Kondo screening and d-orbital ferromagnetism in material system La$_{1-x}$Ce$_x$Co$_2$As$_2$, through comprehensive thermodynamic and electrical transport measurements. Additionally, using angle-resolved photoemission spectroscopy (ARPES), we further observe the f-orbit-dominated bands near the Fermi level ($E_f$) and signatures of the f-c hybridization below the magnetic transition temperature, providing strong evidence of Kondo lattice state in the presence of ferromagnetic order. Remarkably, by changing the ratio of Ce/La, we observe a substantial enhancement of the anomalous Hall effect (AHE) in the Kondo lattice regime. The value of the Hall conductivity quantitatively matches with the first-principle calculation that optimized with our ARPES results and can be attributed to the large Berry curvature (BC) density engendered by the topological nodal rings composed of the Ce-4f and Co-3d orbitals at $E_f$. Our findings point to the realization of a new platform for exploring correlation-driven topological responses in a novel Kondo lattice environment.

    Comment: 4 Figs and 22 pages. This is the submitted version and the work will be presented in March meeting (section T19). All comments are welcome!
    Keywords Condensed Matter - Strongly Correlated Electrons ; Condensed Matter - Materials Science
    Subject code 530
    Publishing date 2023-02-23
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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