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Revisit of the anisotropic vortex states of 2H-NbSe_(2) towards the zero-field limit

Chinese Physics B 2024年第6期33卷 80-86页

作者：张凡侯兴元姜宇轩张宗源涂玉兵朱相德陈根富单磊 Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Center of Free Electron Laser and High Magnetic Field Anhui UniversityHefei 230601China Information Materials and Intelligent Sensing Laboratory of Anhui Province Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid Materials in Anhui University Ministry of EducationHefei 230601China School of Physics and Materials Science Anhui UniversityHefei 230601China Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryHFIPSAnhuiChinese Academy of Sciencesand University of Science and Technology of ChinaHefei 230031China Hefei National Laboratory Hefei 230088China

We revisited the vortex states of 2H-NbSe_(2) towards zero fields by a low-temperature scanning tunneling *** structures of the anisotropic vortex states were distinguished, one is a spatially non-splitting zero bias peak, and the other is an in-gap conductance anomaly resembling evolved crossing features around the center of the three nearest *** of them distribute solely along the next nearest neighboring direction of the vortex lattice and become unresolved in much higher magnetic fields, implying an important role played by the vortex–vortex interactions. To clarify these issues,we have studied the intrinsic vortex states of the isolated trapped vortex in zero fields at 0.45 K. It is concluded that the anisotropic zero bias peak is attributed to the superconducting gap anisotropy, and the spatially evolved crossing features are related to the vortex–vortex interaction. The vortex core size under the zero-field limit is determined. These results provide a paradigm for studying the inherent vortex states of type-II superconductors especially based on an isolated vortex.

关键词： vortex states zero-bias conductance peak scanning tunneling microscopy

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Planar Hall Effect in the Charge-Density-Wave Bi2Rh3Se2

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Chinese Physics Letters 2024年第7期41卷 131-136页

作者：蔡明桔陈正杨扬朱相德孙浩翔朱安康刘学韩玉岩高文帅田明亮 Institutes of Physical Science and Information Technology Anhui University Anhui Key Laboratory of Low-energy Quantum Materials and Devices High Magnetic Field LaboratoryHefei Institutes of Physical Science Chinese Academy of Sciences Stony Brook Institute at Anhui University Anhui University School of Mathematics and Physics Bengbu University School of Physics and Optoelectronics Engineering Anhui University

We systematically investigate in-plane transport properties of ternary chalcogenide *** rotating the magnetic field within the plane of the sample,one can distinctly detect the presence of both planar Hall resistance and anisotropic longitudinal resistance,and the phenomena appeared are precisely described by the theoretical formulation of the planar Hall effect （PHE）.In addition,anisotropic orbital magnetoresistance rather than topologically nontrivial chiral anomalies dominates the PHE in *** finding not only provides another platform for understanding the mechanism of PHE,but could also be beneficial for future planar Hall sensors based on two-dimensional materials.

关键词： Anisotropy

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Planar Hall Effect in the Charge-Density-Wave Bi_(2)Rh_(3)Se_(2)

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Chinese Physics Letters 2024年第7期41卷 126-131页

作者：蔡明桔陈正杨扬朱相德孙浩翔朱安康刘学韩玉岩高文帅田明亮 Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Anhui Key Laboratory of Low-energy Quantum Materials and Devices High Magnetic Field LaboratoryHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Stony Brook Institute at Anhui University Anhui UniversityHefei 230601China School of Mathematics and Physics Bengbu UniversityBengbu 233030China School of Physics and Optoelectronics Engineering Anhui UniversityHefei 230601China

We systematically investigate in-plane transport properties of ternary chalcogenideBi_(2)Rh_(3)Se_(2).Upon rotating the magnetic field within the plane of the sample, one can distinctly detect the presence of both planar Hall resistance and anisotropic longitudinal resistance, and the phenomena appeared are precisely described by the theoretical formulation of the planar Hall effect (PHE). In addition, anisotropic orbital magnetoresistance rather than topologically nontrivial chiral anomalies dominates the PHE in Bi_(2)Rh_(3)Se_(2). The finding not only provides another platform for understanding the mechanism of PHE, but could also be beneficial for future planar Hall sensors based on two-dimensional materials.

关键词： materials planar anisotropic

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Transport signatures of the topological surface state induced by the size effect in superconductor β-PdBi_(2)

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Science China(Physics,Mechanics & Astronomy) 2023年第7期66卷 94-101页

作者： Ankang zhu Zheng Chen Yuyan Han Mengcheng zhu Huanhuan Wang Minglong Han Liang Li Xue Liu Guolin Zheng xiangde zhu Wenshuai Gao Mingliang Tian Information Materials and Intelligent Sensing Laboratory of Anhui Province Institutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryChinese Academy of SciencesHefei 230031China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei 230601China School of Physics and Optoelectronics Engineering Anhui UniversityHefei 230031China

The superconductivity and nontrivial topological electronic state are key hallmarks of topological ***,we focus on the transport signals of possible topological surface state in the topological superconductor candidate β-PdBi_(2) nanoflake with a thickness of 21 *** resistance demonstrates a semiconductor-metal transition followed by an upturned behavior as the temperature decreases.A large and unsaturated longitudinal magnetoresistance(MR),accompanied by distinct Shubnikov-de Hass oscillation in Hall resistance,is *** analysis of Hall resistance reveals that the carriers present the characteristics of relativistic particles with small effective mass and extremely high *** angle-dependent quantum oscillations demonstrate a two-dimensional Fermi surface topology.A giant anisotropic MR as large as 98%is detected when rotating the magnetic *** results provide the possible transport signals of a nontrivial topological electronic state,establishing a further understanding of the topological properties of the low-dimensional topological superconductor candidate β-PdBi_(2).

关键词： magnetotransport surface state low-dimensional

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包膜氯化胆碱对反刍动物的营养作用及其应用研究进展

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中国畜牧杂志 2024年第1期60卷 87-93页

作者：朱相德侯嘉柘丽吴鹏戚营营李浙烽张倩云王效赵威康德权包膜饲料添加剂省级重点农业企业研究院杭州康德权饲料有限公司浙江杭州311112

胆碱是动物生长发育必不可少的营养素,具有维持细胞膜完整性、参与脂肪代谢、参与乙酰胆碱合成等多种生理功能。饲料中通常是以氯化胆碱的形式添加,但是普通的氯化胆碱具有吸湿性强、易被瘤胃微生物降解、破坏其他营养物质活性等缺陷。... 详细信息

胆碱是动物生长发育必不可少的营养素,具有维持细胞膜完整性、参与脂肪代谢、参与乙酰胆碱合成等多种生理功能。饲料中通常是以氯化胆碱的形式添加,但是普通的氯化胆碱具有吸湿性强、易被瘤胃微生物降解、破坏其他营养物质活性等缺陷。通过包膜处理的氯化胆碱克服了普通氯化胆碱的缺陷,广泛应用于反刍动物生产中。本文就氯化胆碱保护的必要性、氯化胆碱保护方法及包膜氯化胆碱对反刍动物的营养作用进行综述,以期为包膜氯化胆碱在反刍动物生产中的应用提供参考。

关键词：包膜氯化胆碱包膜方法微胶囊反刍动物

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Pressure engineering of intertwined phase transitions in lanthanide monopnictide NdSb

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Science China(Physics,Mechanics & Astronomy) 2022年第8期65卷 140-147页

作者： Ying Zhou Xuliang Chen Yonghui Zhou Jihai Yu xiangde zhu Chao An Changyong Park Xiangang Wan Xiaoping Yang Zhaorong Yang Institutes of Physical Science and Information Technology Anhui UniversityHefei230601China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryHFIPSChinese Academy of SciencesHefei230031China High Magnetic Field Laboratory of Anhui Province Hefei230031China National Laboratory of Solid State Microstructures School of PhysicsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing210093China HPCAT X-ray Science DivisionArgonne National LaboratoryArgonneIL60439USA

Coexistence of non-trivial band topology and intrinsic magnetic order not only leads to emergent phenomena but also allows for the tunability of the exotic properties from different degrees of freedom. By performing transport measurements at synergetic extreme conditions, here we report on pressure engineering of intertwined structural, magnetic, and topological phase transitions in an antiferromagnetic Dirac semimetal NdSb. We show that the original antiferromagnetic state is strengthened in the lowpressure region while destabilized upon further compression close to the critical pressure where a structural transition from Fm-3m phase to P4/mmm phase takes place at P~18 GPa, forming a yurt-shaped evolution in response to magnetic field,pressure and temperature. Concomitant with the structural transition, NdSb simultaneously carries on a magnetic transition to the ferromagnetic state. Moreover, theoretical calculations unravel that the ferromagnetic tetragonal phase presents nontrivial features of Weyl fermions. These findings offer new important insight into the microscopic interplay among lattice, spin, and relativistic fermions in lanthanide monopnictides.

关键词： synergetic extreme conditions high pressure NdSb magnetic topological semimetal phase transition

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Linear magnetoresistance and structural distortion in layered SrCu_(4-x)P_(2) single crystals

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Chinese Physics B 2024年第1期33卷 591-594页

作者：聂勇陈正韦文森李慧杰张勇梅明王园园宋文海宋东升王钊胜朱相德宁伟田明亮 Anhui Key Laboratory of Low-energy Quantum Materials and Devices High Magnetic Field LaboratoryHFIPSChinese Academy of SciencesHefei 230031China Department of Physics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Materials Physics Institute of Solid State PhysicsHFIPSChinese Academy of SciencesHefei 230031China Information Materials and Intelligent Sensing Laboratory of Anhui Province Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationInstitutes of Physical Science and Information TechnologyAnhui UniversityHefei 230601China School of Physics Anhui UniversityHefei 230601China

We report a systematic study on layered metal SrCu_(4-x)P_(2) single crystals via transport, magnetization, thermodynamic measurements and structural characterization. We find that the crystals show large linear magnetoresistance without any sign of saturation with a magnetic field up to 30T. We also observe a phase transition with significant anomalies in resistivity and heat capacity at T_(p)~140 K. Thermal expansion measurement reveals a subtle lattice parameter variation near Tp, i.e.,?L_(c)/L_(c)~0.062%. The structural characterization confines that there is no structure transition below and above T_(p). All these results suggest that the nonmagnetic transition of SrCu_(4-x)P_(2) could be associated with structural distortion.

关键词： linear magnetoresistance thermal expansion specific heat structural distortion

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Absence of magnetic order in dichloro[1,2-bis(diphenylphosphino)ethane]nickel^(2+)single crystal

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Chinese Physics B 2021年第5期30卷 613-616页

作者：马帅奇安琳琳朱相德 Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China School of Electronic Science and Applied Physics Hefei University of TechnologyHefei 230009China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryChinese Academy of SciencesHefei 230031China

Dichloro[1,2-bis(diphenylphosphino)ethane]nickel^(2+(NiCl2(dppe))is an organic compound containing C_(26)H_(24)P_(2)(dppe)molecules and Cl^(-),Ni^(2+*** large-size NiCl_(2)(dppe)single crystals with longest dimension of 4 mm were grown by the method of slow evaporation of organic *** crystal x-ray diffraction spectrum indicates that the single crystal is of high *** results of the NiCl_(2)(dppe)single crystals show an anisotropic paramagnetism behavior and diamagnetic background,which come from Ni^(2+ions and benzene ring,***,according to the specific heat results with temperature down to 0.1 K and magnetic field up to 14 T,no expected field-induced quantum phase transition was observed in NiCl_(2)(dppe)single crystals.

关键词： anisotropic paramagnetic single crystal ultra low temperature specific heat

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De Haas–van Alphen study on three-dimensional topological semimetal pyrite PtBi2

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Science Bulletin 2019年第20期64卷 1496-1501页

作者： Wenshuai Gao xiangde zhu Jin Hu Shujing Li Fawei Zheng Hongwei Zhang Min Wu Guolin Zheng Ning Hao Ping Zhang Wei Ning Mingliang Tian Institute of Physical Science and Information Technology School of Physics and Materials ScienceAnhui UniversityHefei230601China Anhui Province Key Laboratory of Condensed Matter Physics at Extreme Conditions High Magnetic Field LaboratoryChinese Academy of SciencesHefei230031China Department of Physics University of Science and Technology of ChinaHefei230026China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing210093China Department of Physics Institute for Nanoscience and EngineeringUniversity of ArkansasFayettevilleAR72701USA Institute of Applied Physics and Computational Mathematics Beijing100088China Schoo of Science RMIT UniversityMelbourneVIC3001Australia

We present the systematic de Haas–van Alphen(d Hv A) quantum oscillations studies on the recently discovered topological Dirac semimetal pyrite PtBi2 single crystals. Remarkable d Hv A oscillations are emerged at a low field about 1.5 T. From the analyses of the d Hv A oscillations, we extract the high quantum mobilities, light effective masses and phase shift factors for the Dirac fermions in pyrite PtBi2. From the angular dependence of the d Hv A oscillations, we map out the topology of the Fermi ***, we identify two additional oscillation frequencies that are not probed by the Sd H oscillations, which provides us with opportunities to further understand its Fermi surface topology.

关键词： Topological semimetal Pyrite PtBi2 De Haas–van Alphen effect Fermi surface topology

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某锰矿达标废水在井下防尘防火中的应用研究

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中国锰业 2022年第4期40卷 60-62,68页

作者：朱祥德贵州遵义汇兴铁合金有限责任公司贵州遵义563000

根据企业实际,利用原有井下排水设备和水处理系统,结合《金属非金属矿山安全规程》(GB 16423—2020)在井下防尘防火的相关规范要求,结合某锰矿山设施设备情况,利用达标排放废水在井下防尘防火中进行应用,形成一套独立的、自动防尘防火... 详细信息

根据企业实际,利用原有井下排水设备和水处理系统,结合《金属非金属矿山安全规程》(GB 16423—2020)在井下防尘防火的相关规范要求,结合某锰矿山设施设备情况,利用达标排放废水在井下防尘防火中进行应用,形成一套独立的、自动防尘防火的常高压给水系统。利用PLC的应用和智能传感器,以及5G物联网,为井下水泵等设施设备的自动化,安全、生产调度的智能化发展提供参考依据。

关键词：达标排放废水防尘防火工艺流程 PLC控制

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