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Topological electronic states in HfRuP family superconductors

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npj Computational Materials 2019年第1期5卷 88-93页

作者： Yuting Qian Simin Nie Changjiang Yi lingyuan kong Chen Fang Tian Qian Hong Ding Youguo Shi Zhijun Wang Hongming Weng Zhong Fang Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China Department of Materials Science and Engineering Stanford UniversityStanfordCA 94305USA CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing100190China Songshan Lake Materials Laboratory DongguanGuangdong 523808China

Based on the first-principles calculations and experimental measurements,we report that the hexagonal phase of ternary transition metal pnictides TT’X(T=Zr,Hf;T’=Ru;X=P,As),which are well-known noncentrosymmetric superconductors with relatively high transition temperatures,host nontrivial bulk *** the superconducting phase transition,we find that HfRuP belongs to a Weyl semimetal phase with 12 pairs of type-II Weyl points,while ZrRuAs,ZrRuP and HfRuAs belong to a topological crystalline insulating phase with trivial Fu-Kane Z_(2) indices but nontrivial mirror Chern ***-quality single crystal samples of the noncentrosymmetric superconductors with these two different topological states have been obtained and the superconductivity is verified *** wide-range band structures of ZrRuAs have been identified by ARPES and reproduced by theoretical *** with intrinsic superconductivity,the nontrivial topology of the normal state may generate unconventional superconductivity in both bulk and *** findings could largely inspire the experimental searching for possible topological superconductivity in these compounds.

关键词： nontrivial superconductors topological

Formation of Superoxide Radical and Hydrogen Peroxide Enhanced by Trinitrotoluene in Rat Liver, Brain, Kidney, and Testicle in Vitro and Monkey Liver in Vivo

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Biomedical and Environmental Sciences 1989年第1期2卷 72-77页

作者： kong lingyuan, JIANG QUANGUAN,~2 AND QU QINGSHAN Department of Occupational Health, School of Public Health, Beijing Medical University, Beijing, China Department of Occupational Health School of Public Health Beijing Medical University China.

Trinitrotoluene (TNT) increased the formation of adrenochrome from adrenaline and the formation of formaldehyde from methanol in rat liver mitochondria and microsomes in vitro as well as in monkey liver mitrochondria and microsomes in vivo. The effects were more prominent at higher TNT concentrations. These findings indicate that TNT enhances the production of superoxide radicals (O_2^-) and hydrogen peroxide (H_2O_2). The production of O_2^- was more prominent in systems containing added TNT than in those containing added benzyl viologen. H_2O_2 production by mitochondria was more pronounced in the liver than in other organs, but its production by microsomes was more pronounced in the brain than in other organs. The results suggest that TNT undergoes cycling reduction which produces oxidative stress. 1989 Academic Press, Inc.

关键词： Brain Formation of Superoxide Radical and Hydrogen Peroxide Enhanced by Trinitrotoluene in Rat Liver Kidney and Testicle in Vitro and Monkey Liver in Vivo

The History of Xu-style Garden in the Pre-Qin Period

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Journal of Landscape Research 2021年第1期13卷 11-14页

作者： LIU Xiaolu YAN Hua kong lingyuan QIN Fei Research Institute of Xu-Style Gardens XuzhouJiangsu 221000China

Based on ancient documents and archaeology,this paper studied the general situation and landscape conditions of ancient Xuzhou in the pre-Qin period,including regional changes,economic development,and gardening activities and characteristics of Xu-style *** study found that ancient Xuzhou had been inhabited by human beings as early as 6,000 years ago,and villages and kingdoms had gradually *** Yu the Great ruled the country(also known as Jiuzhou,or nine states),Xu was one of the nine states,known as *** natural geographical environment was superior,the transportation was convenient,economy and society was relatively developed,thus by the Zhou Dynasty,ancient Xuzhou region had already had a large number of early garden *** period was the incubation period of Xu-style garden.

关键词： Landscape architecture Ancient Xuzhou Pre-Qin period Garden

Hybridization Effects Revealed by Angle-Resolved Photoemission Spectroscopy in Heavy-Fermion Ce2IrIn8

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Chinese Physics Letters 2019年第9期36卷 36-40页

作者： Haijiang Liu Yuanji Xu Yigui Zhong Jianyu Guan lingyuan kong Junzhang Ma Yaobo Huang Qiuyun Chen Genfu Chen Ming Shi Yi-feng Yang Hong Ding Beijing National Laboratory forCondensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing100190 Schoolof Physics University of Chinese AcademyofSciencesBeijing100190 Swiss LightSource PaulScherrer InstituteCH5232Villigen PSISwitzerland Shanghai Synchrotron Radiation Facility Shanghai Institute of AppliedPhysicsChinese Academy of SciencesShanghai201204 Science and Technology on Surface Physics and Chemistry Laboratory Mianyang621908 SongshanLakeMaterials Laboratory Dongguan523808

We utilize high-resolution resonant angle-resolved photoemission spectroscopy(ARPES)to study the band structure and hybridization effect of the heavy-fermion compound Ce2 *** observe a nearly flat band at the binding energy of 7 meV below the coherent temperature Tcoh^40 K,which characterizes the electrical resistance maximum and indicates the onset temperature of ***,the Fermi vector and the Fermi surface volume have little change around Tcoh,which challenges the widely believed evolution from a hightemperature small Fermi surface to a low-temperature large Fermi *** experimental results of the band structure fit well with the density functional theory plus dynamic mean-field theory calculations.

关键词： ARPES Hybridization Effects Revealed by Angle-Resolved Photoemission Spectroscopy in Heavy-Fermion Ce2IrIn8 Ce

Experimental evidence of anomalously large superconducting gap on topological surface state of b-Bi2Pd film

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Science Bulletin 2019年第17期64卷 1215-1221页

作者： Jian-Yu Guan lingyuan kong Li-Qin Zhou Yi-Gui Zhong Hang Li Hai-Jiang Liu Cen-Yao Tang Da-Yu Yan Fa-Zhi Yang Yao-Bo Huang You-Guo Shi Tian Qian Hong-Ming Weng Yu-Jie Sun Hong Ding Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 China School o f Physics University of Chinese Academy of Sciences Beijing 100190 China Shanghai Synchrotron Radiation Facility Shanghai Institute o f Applied Physics Chinese Academy of Sciences Shanghai 201204 China CAS Center for Excellence in Topological Quantum Computation University o f Chinese Academy of Sciences Beijing 100190 China Songshan Lake Materials Laboratory Dongguan 523808 China

Connate topological superconductor(TSC) combines topological surface states with nodeless superconductivity in a single material, achieving effective p-wave pairing without interface complication. By combining angle-resolved photoemission spectroscopy and in-situ molecular beam epitaxy, we studied the momentum-resolved superconductivity in b-Bi2 Pd film. We found that the superconducting gap of topological surface state(DTSS$ 3.8 meV) is anomalously enhanced from its bulk value(Db$ 0.8 meV). The ratio of 2 DTSS/kBTc$ 16.3, is substantially larger than the BCS value. By measuring b-Bi2 Pd bulk single crystal as a comparison, we clearly observed the upward-shift of chemical potential in the film. In addition, a concomitant increasing of surface weight on the topological surface state was revealed by our first principle calculation, suggesting that the Dirac-fermion-mediated parity mixing may cause this anomalous superconducting enhancement. Our results establish b-Bi2 Pd film as a unique case of connate TSCs with a highly enhanced topological superconducting gap, which may stabilize Majorana zero modes at a higher temperature.

关键词： Topological surface state Multiband superconductivity Thin film Photoemission spectroscopy

Discovery of Majorana Bound State in Fe-based Superconductor

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Bulletin of the Chinese Academy of Sciences 2018年第4期32卷 238-240页

作者： WANG Dongfei kong lingyuan FAN Pen GAO Hongjun DING Hong Genda Gu Liang Fu 不详 Brookhaven National laboratory MIT

In 1937, Italian theoretical physicist Ettore Majorana published a paper, in which he made a brilliant discovery by decomposing Dirac equation into the real and imaginary parts. That is the famous equation describing ... 详细信息

关键词： Discovery Majorana Bound State Fe-based Superconductor IOP MBS Fe

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输电线路载荷能力在线定值

电工技术学报 2013年第2期28卷 279-284页

作者：梁立凯韩学山王艳玲孔令元山东大学电气工程学院济南250061 山东大学(威海)机电与信息工程学院威海264209 山东电力集团公司枣庄供电公司枣庄277100

为了对运行条件下的输电线路载荷能力进行在线定值,考虑系统的整体性,并体现环网中并行流对线路载荷能力的影响,建立了基于双端口诺顿等值的输电线路送受端系统双端电源等值模型,依据状态估计信息实现在线跟踪等值参数,进而实施输电线... 详细信息

为了对运行条件下的输电线路载荷能力进行在线定值,考虑系统的整体性,并体现环网中并行流对线路载荷能力的影响,建立了基于双端口诺顿等值的输电线路送受端系统双端电源等值模型,依据状态估计信息实现在线跟踪等值参数,进而实施输电线路载荷能力在线定值的分析和计算。结合山东电网220kV线路,对输电线路载荷能力在线定值进行验证性分析,证明了模型和计算方法的可行性和有效性。

关键词：线路载荷双端口诺顿等值在线跟踪在线定值

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纪念汪宁生先生

南方民族考古 2016年第1期 279-289页

作者：孔令远重庆师范大学历史与社会学院

汪宁生先生对于我国西南地区的民族考古学有重要贡献,无论在理论、方法还是具体研究实践方面,都留下了丰厚的论著。他是中国南方民族考古重要的奠基者之一,曾给予中国民族考古学的学科建设和发展以重要的指导。

关键词：民族考古学汪宁生

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独柱墩桥梁抗倾覆增设钢盖梁受力可靠性分析及改进措施

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广东公路交通 2018年第4期44卷 115-118,125页

作者：孔令元广东省公路建设有限公司广州510623

在广东省独柱墩桥梁抗倾覆集中加固处治中,增设钢盖梁的处治方案因具有增加恒载小、工期短、施工对桥面交通影响小等优点而被广泛使用。但相对于混凝土盖梁,钢盖梁整体刚度较低,对辅助支座受力有不利影响。以广东西部沿海高速公路珠海... 详细信息

在广东省独柱墩桥梁抗倾覆集中加固处治中,增设钢盖梁的处治方案因具有增加恒载小、工期短、施工对桥面交通影响小等优点而被广泛使用。但相对于混凝土盖梁,钢盖梁整体刚度较低,对辅助支座受力有不利影响。以广东西部沿海高速公路珠海段月环高架桥独柱墩加固工程为例,利用有限元法分析钢盖梁受力的可靠性,提出钢盖梁施工工艺的改进措施。

关键词：独柱墩桥梁抗倾覆稳定性钢盖梁有限元分析