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Chiral Pair Density Waves with Residual Fermi Arcs in RbV_(3)Sb_(5)

Chinese Physics Letters 2024年第9期41卷 88-92页

作者： Xiao-Yu Yan Hanbin Deng Tianyu Yang Guowei Liu Wei Song Hu Miao Zhijun Tu Hechang Lei Shuo Wang ben-chuan lin Hailang Qin Jia-Xin Yin Department of Physics Southern University of Science and TechnologyShenzhen 518055China Materials Science and Technology Division Oak Ridge National LaboratoryOak RidgeTennessee 37831USA Beijing Key Laboratory of Optoelectronic Functional Materials MicroNano Devices Department of PhysicsRenmin University of ChinaBeijing 100872China Key Laboratory of Quantum State Construction and Manipulation(Ministry of Education) Renmin University of ChinaBeijing 100872China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area Shenzhen 518055China

The chiral 2×2 charge order has been reported and confirmed in the kagome superconductor RbV_(3)Sb_(5),while its interplay with superconductivity remains elusive owing to its lowest superconducting transition temperature Tc of about 0.85K in the AV_(3)Sb_(5) family(A=K,Rb,Cs)that severely challenges electronic spectroscopic ***,utilizing dilution-refrigerator-based scanning tunneling microscopy down to 30 mK,we observe chiral 2×2 pair density waves with residual Fermi arcs in RbV_(3)Sb_(5).We find a superconducting gap of 150 μeV with substantial residual in-gap *** spatial distribution of this gap exhibits chiral 2×2 modulations,signaling a chiral pair density wave(PDW).Our quasi-particle interference imaging of the zero-energy residual states further reveals arc-like *** discuss the relation of the gap modulations with the residual Fermi arcs under the space-momentum correspondence between PDW and Bogoliubov Fermi states.

关键词： Fermi chiral utilizing

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Noisy intermediate-scale quantum computers

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Frontiers of physics 2023年第2期18卷 1-62页

作者： Bin Cheng Xiu-Hao Deng Xiu Gu Yu He Guangchong Hu Peihao Huang Jun Li ben-chuan lin Dawei Lu Yao Lu Chudan Qiu Hui Wang Tao Xin Shi Yu Man-Hong Yung Junkai Zeng Song Zhang Youpeng Zhong Xinhua Peng Franco Nori Dapeng Yu Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China International Quantum Academy Shenzhen 518048China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Physics Southern University of Science and TechnologyShenzhen 518055China Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences University of Science and Technology of ChinaHefei 230026China Quantum Computing Center and Cluster for Pioneering Research RIKENWakoshiSaitama 351-0198Japan Physics Department University of MichiganAnn ArborMI 48109-1040USA

Quantum computers have made extraordinary progress over the past decade,and significant milestones have been achieved along the path of pursuing universal fault-tolerant quantum *** advantage,the tipping point heralding the quantum era,has been accomplished along with several waves of *** hardware has become more integrated and architectural compared to its toddler *** controlling precision of various physical systems is pushed beyond the fault-tolerant ***,quantum computation research has established a new norm by embracing industrialization and *** joint power of governments,private investors,and tech companies has significantly shaped a new vibrant environment that accelerates the development of this field,now at the beginning of the noisy intermediate-scale quantum ***,we first discuss the progress achieved in the field of quantum computation by reviewing the most important algorithms and advances in the most promising technical routes,and then summarizing the next-stage ***,we illustrate our confidence that solid foundations have been built for the fault-tolerant quantum computer and our optimism that the emergence of quantum killer applications essential for human society shall happen in the future.

关键词： quantum computer quantum algorithm quantum chip

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Electric modulation of the Fermi arc spin transport via three-terminal configuration in topological semimetal nanowires

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Chinese Physics B 2024年第1期33卷 671-674页

作者：祝光宇宁纪爱王建坤刘心洁杨佳洁林本川王硕 Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China International Quantum Academy Shenzhen 518048China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Spin–momentum locking is a key feature of the topological surface state, which plays an important role in *** electrical detection of current-induced spin polarization protected by the spin–momentum locking in nonmagnetic systems provides a new platform for developing spintronics, while previous studies were mostly based on magnetic *** this study, the spin transport measurement of Dirac semimetal Cd_(3)As_(2) was studied by three-terminal geometry, and a hysteresis loop signal with high resistance and low resistance state was observed. The hysteresis was reversed by reversing the current direction, which illustrates the spin–momentum locking feature of Cd_(3)As_(2). Furthermore, we realized the on–off states of the spin signals through electric modulation of the Fermi arc via the three-terminal configuration, which enables the great potential of Cd_(3)As_(2) in spin field-effect transistors.

关键词： topological semimetal spin–momentum locking quantum transport spin field-effect transistor

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Negative magnetoresistance in Dirac semimetal Cd_(3)As_(2)with in-plane magnetic field perpendicular to current

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Chinese Physics B 2023年第7期32卷 181-185页

作者：崔浩楠祝光宇王建坤杨佳洁郑文壮林本川廖志敏王硕俞大鹏 State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China International Quantum Academy Shenzhen 518048China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Topological insulators and semimetals have exotic surface and bulk states with massless Dirac or Weyl fermions,demonstrating microscopic transport phenomenon based on relativistic *** anomaly induced negative magnetoresistance(negative MR)under parallel magnetic field and current has been used as a probable evidence ofWeyl fermions in recent *** we report a novel negative MR result with mutually perpendicular in-plane magnetic field and current in Cd_(3)As_(2)*** negative MR has a considerable value of-16%around 1.5 K and could persist to room temperature of 300 K with value of-1%.The gate tuning and angle dependence of the negative MR demonstrate the mechanism of the observed negative MR is different from the chiral *** current paths induced by charge puddles and disorder might be involved to produce such considerable negative *** results indicate the negative MR effect in topological semimetals involves synergistic effects of many mechanisms besides chiral anomaly.

关键词： negative magnetoresistance chiral anomaly topological semimetals quantum transport

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Nonlinear current response and electric quantum oscillations in the Dirac semimetal Cd_(3)As_(2)

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Chinese Physics B 2023年第8期32卷 104-108页

作者：崔浩楠吴泽南王建坤祝光宇杨佳洁郑文壮廖志敏王硕林本川俞大鹏 State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China International Quantum Academy Shenzhen 518048China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

Chiral anomaly is a distinct quantum anomaly associated with chiral fermions in Dirac or Weyl *** use of negative magnetoresistance(negative MR)as a signature for this anomaly remains contentious,as trivial mechanisms such as current jetting and weak localization can also induce negative *** this study,we report a novel nonlinear behavior of the chiral anomaly in the longitudinal direction,which we observed by applying parallel current and magnetic field to the Dirac semimetal Cd_(3)A_(s_(2)).This nonlinear characteristic peaks at an intermediate magnetic field of approximately5 T,displaying a resistance-increasing property concomitant with strengthening of the current *** angledependence experiments,we were able to rule out trivial factors,such as thermal effects,geometric artifacts,and ***,additional electric quantum oscillations were observed when the direct current(DC)was applied as high as300μ*** an unusual phenomenon is ascribed to the formation of quantized levels due to Bloch oscillation in the high DC regime,suggesting that an oscillatory density distribution may arise as the electric field *** non-Ohmic electric quantum oscillations open a new avenue for exploring chiral anomaly and other nontrivial topological properties,which is also one of the salient features of nonequilibrium steady states in condensed matter physics.

关键词： nonlinear response electric quantum oscillations chiral anomaly topological semimetals

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Spontaneous ferromagnetism and magnetoresistance hysteresis in Ge_(1–x)Sn_(x)alloys

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Science Bulletin 2021年第14期66卷 1375-1378,M0003页

作者： ben-chuan lin Xing-Guo Ye Nan Wang Cai-Xin Zhang Hui-Xiong Deng Jing-Zhi Fang Hao-Nan Cui Shuo Wang Jian Liu Zhongming Wei Dapeng Yu Zhi-Min Liao Chunlai Xue Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen 518055China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China Institute of Semiconductors Chinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Introducing ferromagnetism into non-magnetic systems without the participation of magnetic elements is promising for all-electric spintronic devices[1,2].Many approaches have been pursued,such as non-magnetic defects induced magnetization in layered materials[3–5]or the inversion symmetry breaking induced magnetization in magic-angle bilayer graphene[6–8],***,these approaches have to tackle with the localization effects or the inevitable precise control of twist angle,which hinders the future application into large-scale spintronic information *** also predicted that the spontaneous ferromagnetism could emerge in the quasi-2D crystals[9]like GaSe,but no experimental results have been ***,we report the spontaneous ferromagnetism induced by van Hove singularity[9–13]in non-magnetic groupⅣGe_(1–x)Sn_(x)alloys grown by the molecular beam epitaxy(MBE)*** findings experimentally open up an opportunity to realize spintronics in groupⅣsemiconductors.

关键词：半导体领域自发磁化分子束外延生长反演对称性磁化特性原子排列布里渊区自旋电子学

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Systematical identification of regulatory GPCRs by single-cell trajectory inference reveals the role of ADGRD1 and GPR39 in adipogenesis

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Science China Life Sciences 2025年

作者： chuan Ye Xuemei Wang Jun lin Chenyang Wu Yuhua Gao Chenghao Guo Yunxi Liao Ziyan Rao Shaodong Huang Weixuan Chen Ying Huang Jinpeng Sun Dongyu Zhao Changtao Jiang Center of Basic Medical Research Institute of Medical Innovation and ResearchPeking University Third Hospital Department of Physiology and Pathophysiology School of Basic Medical SciencesPeking University Department of Biomedical Informatics School of Basic Medical SciencesPeking University State Key Laboratory of Vascular Homeostasis and Remodeling Peking University Center for Obesity and Metabolic Disease Research School of Basic Medical SciencesPeking University State Key Laboratory of Female Fertility Promotion Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third Hospital National Clinical Research Center for Obstetrics and Gynecology Peking University Third Hospital Department of Endocrinology and Metabolism Peking University Third Hospital Key Laboratory Experimental Teratology of the Ministry of Education Department of Biochemistry and Molecular BiologySchool of Basic Medical SciencesCheeloo College of MedicineShandong University Department of Immunology School of Basic Medical SciencesPeking University

Adipogenesis is the healthy expansion of white adipose tissue (WAT),serving as a compensatory response to maintain metabolic homeostasis in the presence of excess energy in the ***,the identification of novel regulatory molecules in adipogenesis,specifically membrane receptors such as G protein-coupled receptors (GPCRs),holds significant clinical *** receptors can serve as viable targets for pharmaceuticals,offering potential for restoring metabolic homeostasis in individuals with *** utilized trajectory inference methods to analyze three distinct single-nucleus sequencing (sNuc-seq) datasets of adipose tissue and systematically identified GPCRs with the potential to regulate *** verification in primary adipose progenitor cells (APCs) of mice,we discovered that ADGRD1 promoted the differentiation of APCs,while GPR39 inhibits this *** the obese mouse model induced by a high-fat diet(HFD),both gain-of-function and loss-of-function studies validated that ADGRD1 promoted adipogenesis,thereby improving metabolic homeostasis,while GPR39 inhibited adipogenesis,leading to metabolic ***,through the analysis of 2,400 ChIP-seq data and 1,204 bulk RNA-seq data,we found that the transcription factors (TFs) MEF2D and TCF12 regulated the expression of ADGRD1and GPR39,*** study revealed the regulatory role of GPCRs in adipogenesis,providing novel targets for clinical intervention of metabolic dysfunction in obese patients.

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Prussian Blue Analogue‑Templated Nanocomposites for Alkali‑Ion Batteries:Progress and Perspective

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Nano-Micro Letters 2025年第1期17卷 216-261页

作者： Jian‑En Zhou Yilin Li Xiaoming lin Jiaye Ye Key Laboratory of Theoretical Chemistry of Environment Ministry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006People’s Republic of China School of Chemistry and Physics Faculty of ScienceQueensland University of Technology2 George StreetBrisbaneQLD 4000Australia Centre for Materials Science Queensland University of Technology2 George StreetBrisbaneQLD 4000Australia

Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium *** enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal *** review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).To distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these *** on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.

关键词： Prussian blue analogues Self-sacrificial template Lithium-ion batteries Sodium-ion batteries Potassium-ion batteries

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Metastable seed-crystals: epitaxial growth of branched-array organic heterostructure nanowires

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Science China Chemistry 2025年

作者： Jin Feng Zhen-Yu Geng Ting-Yao Song Ying-Xin Ma chuan-Zeng Wang Wei Zhang Hong-Tao lin Jin Zhou Shu-Ping Zhuo Shu-Hai Chen Xue-Dong Wang School of Chemistry and Chemical Engineering Shandong University of Technology Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials & DevicesSoochow University College of Chemistry and Chemical Engineering Hunan Normal University

Tunable light–matter interactions are exhibited by organic low-dimensional crystals, making these crystals a promising platform for organic photonics. However, the precise synthesis of organic low-dimensional crystals remains challenging due to the stochastic nature of molecular nucleation processes. Herein, the directed nucleation process is driven by the introduction of metastable seed-crystals as the trunk, which ultimately leads to branched-array organic heterostructures. The successful formation of organic heterostructures with high-density branched arrays is attributed to the highest attachment energy (Eatt（023）=-104.25 kcal mol-1) of the exposed （023） crystal plane during the seed-crystal growth route. Significantly, these as-prepared heterostructures inherently have an ultralow lattice mismatch ratio η of 0.7%between trunk and branch, which contributes to the multi-channel photon transportation. Therefore, this work provides valuable insights into a versatile synthetic strategy for accessing low-dimensional heterostructures for integrated optoelectronics.

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Improvement of Cold Recycled Mixture Performance Based on Improved Density Test Method and RAP Characteristics

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 79-87页

作者： HAN Zhanchuang PANG Yafeng lin Hongwei China First Highway Engineering Group Co. LtdBeijing 100024China The Key Laboratory of Road and Traffic Engineering Ministry of EducationTongji UniversityShanghai 201804China Guangzhou Baiyun International Airport Co. Ltd.Guangzhou 510470China

The available test methods for optimal moisture content of cold recycled mixture(CRM)as well as its bulk specific gravity,and theoretical maximum relative density were analyzed in this *** test improvements were suggested to improve test control of the CRM road performance based on the discovered ***,the properties of reclaimed asphalt pavement(RAP),including the content of old asphalt,penetration index,passing rate of 4.75 mm sieve,and gradation change rate after extraction,were *** effects of RAP characteristics on splitting tensile strength,water stability,the high-and low-temperature performance of emulsified asphalt CRM were *** results show that the optimum moisture content of CRM should be determined when the compaction work matches the specimen’s molding *** the analyzed methods of bulk specific gravity assessment,the dry-surface and CoreLok methods provide more robust and accurate results than the wax-sealing method,while the dry-surface method is the most *** modified theoretical maximum relative density test method is proposed,which can reduce the systematic error of the vacuum test *** following RAP-CRM trends can be *** lower the content of old asphalt and the smaller the change rate of gradation,the smaller the voids and the better the water stability of *** greater the penetration of old asphalt,the higher the fracture work and low-temperature splitting *** greater the penetration,the higher the passing rate of 4.75 mm sieve after extraction,and the worse the high-temperature performance of CRM.

关键词： RAP volume parameters high-temperature performance low-temperature performance water stability

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