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arXiv 2025年

作者： Li, Qingxin Fan, Hua Li, Min Xu, Yinghai Song, Junwei Watanabe, Kenji Taniguchi, Takashi Jiang, Hua Xie, Xin-Cheng Hone, James C. Dean, Cory R. Zhao, Yue Liu, Jianpeng Wang, Lei National key Laboratory of Solid-State Microstructures School of Physics Nanjing University Nanjing210093 China Shenzhen518055 China School of Physical Science and Technology ShanghaiTech Laboratory for Topological Physics ShanghaiTech University Shanghai201210 China Research Center for Electronic and Optical Materials National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Research Center for Materials Nanoarchitectonics National Institute for Materials Science 1-1 Namiki Tsukuba305-0044 Japan Fudan University Shanghai200433 China International Center for Quantum Materials School of Physics Peking University Beijing100871 China Department of Mechanical Engineering Columbia University New YorkNY10027 United States Department of Physics Columbia University New YorkNY10027 United States Liaoning Academy of Materials Shenyang110167 China Jiangsu Physical Science Research Center Nanjing210093 China

Anomalous Hall effect (AHE), occurring in materials with broken time-reversal symmetry, epitomizes the intricate interplay between magnetic order and orbital motions of electrons[1–4]. In two dimensional (2D) systems, AHE is always coupled with out-of-plane orbital magnetization associated in-plane chiral orbital motions. In three dimensional (3D) systems, carriers can tunnel or scatter along the third dimension within the vertical mean free path lz. When sample thickness far exceeds lz, scattering disrupts coherent out-of-plane motion, making 3D AHE effectively a thickness-averaged 2D counterpart[4]—still governed by out-of-plane orbital magnetization arising from in-plane orbital motions. Here, we explore an uncharted regime where the sample thickness is much larger than the atomic layer thickness yet smaller than or comparable to lz. In such "transdimensional" regime, carriers can sustain coherent orbital motions both within and out of the 2D plane, leading to a fundamentally new type of AHE that couples both out-of-plane and in-plane orbital magnetizations. We report the first observation of such phenomenon—transdimensional AHE (TDAHE)—in electrostatically gated rhombohedral ennealayer graphene. This state emerges from a peculiar metallic phase that spontaneously breaks time-reversal, mirror and rotational symmetries driven by electron-electron interactions. Such TDAHE manifests as concurrent out-of-plane and in-plane Hall resistance hysteresis, controlled by external magnetic fields along either direction. Our findings unveils a new class of AHE, opening an unexplored paradigm for correlated and topological physics in transdimensional systems. Copyright © 2025, The Authors. All rights reserved.

关键词： Coherent scattering

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Salt-assisted growth and ultrafast photocarrier dynamics of large-sized monolayer ReSe2

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Nano Research 2020年第3期13卷 667-675页

作者： Shaolong Jiang Jin Yang Yuping Shi Jing Zhao Chunyu Xie Liyun Zhao Jiatian Fu Pengfei Yang Yahuan Huan Qin Xie Huachao Jiang Qing Zhang Xianlong Wang Fuhai Su Yanfeng Zhang Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing100871China Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of SciencesHefei230031China University of Science and Technology of China Hefei230026China Center for Nanochemistry(CNC) Beijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871China

Owing to its anisotropic optical and electrical properties,rhenium diselenide(ReSe2)has garnered considerable attention recently as a candidate material for polarization-sensitive ***,the direct and controllable synthesis of large-sized ReSe2 with a uniform thickness is still a great ***,we have refined the synthesis method to obtain uniform monolayer ReSe2 flakes with a size of up to^106μm on sapphire via an ambient-pressure chemical vapor deposition technique using Na promoter from sodium ***,optical pump-probe spectroscopy revealed a fast switching from saturable absorption(SA)to absorption enhancement(AE)in subpicosecond time scale,followed by a slower decay induced by exciton ***,both AE and SA signals exhibited clear angular dependence with a periodicity of 180°,which reflected the dichroism in nonlinear absorption *** addition,the photocarrier dynamics including free-carrier transport and subpicosecond relaxation due to exciton formation or surface trapping was probed using time resolved terahertz *** believe that our study serves as a reference for atomically controlled synthesis of large-sized ReSe2 and provides useful insights on its optoelectronic properties for novel device applications.

关键词： ReSe2 chemical vapor deposition sodium chloride large size ultrafast photocarrier dynamics

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Metal-air batteries: progress and perspective

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science Bulletin 2022年第23期67卷 2449-2486,M0004页

作者： Yuhui Chen Jijing Xu Ping He Yu Qiao Shaohua Guo Huijun Yang Haoshen Zhou State Key Laboratory of Materials-oriented Chemical Engineering Nanjing Tech UniversityNanjing 211816China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China Center of Energy Storage Materials&Technology College of Engineering and Applied SciencesNational Laboratory of Solid State MicrostructuresNanjing UniversityNanjing 210093China State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Energy Technology Research Institute National Institute of Advanced Industrial Science and TechnologyUmezonoTsukuba 305-8568Japan

The metal-air batteries with the largest theoretical energy densities have been paid much more ***,metal-air batteries including Li-air/O_(2),Li-CO_(2),Na-air/O_(2).and Zn-air/O_(2) batteries,are complex systems that have their respective scientific problems,such as metal dendrite forming/deforming,the kinetics of redox mediators for oxygen reduction/evolution reactions,high overpotentials,desolution of CO_(2),H_(2)O,*** the air and related side reactions on both anode and *** should be the main direction to address these shortages to improve ***,we summarized recently research progress in these metal-air/O_(2) *** perspectives are also provided for these research fields.

关键词： Li-air battery solid-state Li-air Sealed/closed Li-O2 battery Redox mediator Na-air/Zn-air battery

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Electronic Structures across the Superconductor-Insulator Transition at La2.85Pr0.15Ni2O7/SrLaAlO4 Interfaces

arXiv

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arXiv 2025年

作者： Wang, Heng Huang, Haoliang Zhou, Guangdi Lv, Wei Yue, Changming Xu, Lizhi Wu, Xianfeng Nie, Zihao Chen, Yaqi Sun, Yu-Jie Chen, Weiqiang Yuan, Hongtao Chen, Zhuoyu Xue, Qi-Kun Department of Physics Guangdong Basic Research Center of Excellence for Quantum Science Southern University of Science and Technology Shenzhen518055 China Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area Shenzhen518045 China Guangdong Provincial Key Laboratory of Advanced Thermoelectric Materials and Device Physics Southern University of Science and Technology Shenzhen518055 China National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Nanjing University Nanjing China Department of Physics Tsinghua University Beijing100084 China

Interfacial superconductivity discovered in bilayer nickelate heterostructures opens new avenues for effective tunability and control. Here, we report the superconductor-insulator transition in La2.85Pr0.15Ni2O7/SrLaAlO4 interfaces, with corresponding electronic structures revealed using synchrotron low-temperature X-ray absorption spectroscopy (XAS) and X-ray linear dichroism (XLD). In addition to the valence states of each element within the films determined by XAS, XLD at the O K edge pre-peak reveals hybridizations involving both 2pz and 2px/2py orbitals, which are concomitantly suppressed upon oxygen loss. Intriguingly, such oxygen loss that eliminates superconductivity, induces a qualitative XLD change at the Ni L2 edge, implying significant transformations among 3dx2-y2 and 3dz2 energy bands near the Fermi level. Our findings establish an element- and orbital-resolved electronic framework for the origin of superconductivity. © 2025, CC BY.

关键词： Lanthanum compounds

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Research progress in terahertz quantum-cascade lasers and quantum-well photodetectors

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Chinese Physics B 2020年第8期29卷 59-71页

作者： Zhi-Yong Tan Wen-Jian Wan Jun-Cheng Cao Key Laboratory of Terahertz Solid-State Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

As semiconductor devices,the terahertz quantum-cascade laser is a coherent source based on intersubband transitions of unipolar carriers while the terahertz quantum-well photodetector is a kind of detector which matches the laser *** are solid-state,electrically operated,and can be easily integrated with other *** paper reviews the state of the art for the design,working performance,and future directions of the two *** applications in photoelectric characterization and imaging are also discussed.

关键词： terahertz semiconductor device photoelectric characterization imaging system

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Current Carrying Capacity of Inkjet-Printed Nano-Silver Interconnects on Mesoporous PET Substrate

Current Carrying Capacity of Inkjet-Printed Nano-Silver Inte...

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Electronic Components and Technology Conference (ECTC)

作者： El Mehdi Abbara Gurvinder Singh Khinda Mohammed Alhendi Riadh Alhaidari Firas Alshatnawi Behnam Garakani Udara S. Somarathna Mark D. Poliks Department of Systems Science and Industrial Engineering State University of New York Binghamton USA Center for Advanced Microelectronics Manufacturing State University of New York Binghamton USA Materials Science and Engineering Program State University of New York Binghamton USA

Conductors are a basic component in any flexible hybrid electronic device. Their electromechanical reliability has been studied, yet very few studies report their thermoelectric behavior. We report the current carrying capacity of an inkjet-printed nano-silver interconnects on mesoporous PET substrate. For this study, the printed interconnects are approximately 100 μm wide, with two different thicknesses: single layer (~650 nm thick) and double layer (~1 μm thick). Samples were sintered with different parameters of oven and laser sintering. The effect of printing and curing parameters on the trace current-carrying capability is evaluated with and without the presence of an encapsulation layer. At the current sweep range of 0.005-0.08A for single layer traces and 0.005-0.17A for double layer traces, results show that the trace resistance slightly increases and then decreases to a minimal value smaller than the initial resistance before dramatically increases indicating substrate damage. The double-layer traces withstand higher current and reach higher temperature than the substrate glass transition point. The oven sintered traces have higher initial resistance than laser sintered samples reflecting the difference in the percentage of solvent content and the microstructure. A drastic decrease in resistance is noticed at low current for the oven sintered samples, but at higher current, both oven and laser sintered traces showed similar behavior. The printed encapsulation layer did not significantly impact the trace behavior. A thermoelectric simulation of the trace joule heating was generated in order to quantify the thermal energy transmitted to the surrounding environment and capture the temperature of the trace surface. The model was compared to the experimental results and showed a good correlation.

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Cw Laser-Assisted Splitting of Sic Wafer Based on Modified Layer by Picosecond Laser

SSRN

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SSRN 2023年

作者： Jiang, Lu Zhao, Shusen Hana, Shifei Liang, Han Du, Jiabao Yu, Haijuan Lin, Xuechun Laboratory of All-solid-state Light Sources Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China College of Electronic Electrical and Communication Engineering University of Chinese Academy of Sciences Beijing101408 China Engineering Technology Research Center of All-Solid-State Lasers Advanced Manufacturing Beijing100083 China

Silicon carbide (SiC), the third-generation semiconductor material, is important in developing electronic power devices. Compared to wire sawing technology, Laser splitting SiC is an efficient way to produce SiC wafers with reduced material loss. In this work, we propose a new method of continuous wave (CW) laser-assisted splitting of SiC wafer based on modified layer by picosecond laser. For the process of CW laser irradiation on the modified layer, thermal-mechanical numerical simulations were performed to calculate the temperature and stress fields during laser loading. The mechanism of CW laser-assisted SiC wafer splitting was analyzed to guide the selection of CW laser parameters. The microstructure, element distribution, and stress state of the split SiC wafer surface were investigated and analyzed. The results showed that laser processing did not affect the crystal structure and carrier concentration of SiC. Compressive stress was generated on the splitting surface. Polycrystalline carbon and single crystalline silicon appeared on the splitting surface with a 50-250 nm thickness. The layer with compressive stress and polycrystalline microstructures can be removed after grinding and polishing. © 2023, The Authors. All rights reserved.

关键词： Silicon carbide

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Nonequilibrium structural and dynamic behaviors of polar active polymer controlled by head activity

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Physical Review Research 2023年第4期5卷 043064-043064页

作者： Jia-Xiang Li Song Wu Li-Li Hao Qun-Li Lei Yu-Qiang Ma National Laboratory of Solid State Microstructures and School of Physics Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093 People's Republic of China Research Institute for Biomaterials Tech Institute for Advanced Materials College of Materials Science and Engineering Nanjing Tech University Nanjing 211816 People's Republic of China

Thermodynamic behavior of polymer chains out of equilibrium is a fundamental problem in both polymer physics and biological physics. By using molecular dynamics simulation, we discover a nonequilibrium mechanism that controls the conformation and dynamics of polar active polymer; i.e., head activity commands the overall chain activity, resulting in a re-entrant swelling of active chains and a nonmonotonic variation of the Flory exponent ν. These intriguing phenomena are the result of two competing nonequilibrium effects arising from the head-controlled railway motion of the chain, i.e., dynamic chain rigidity and the curling of chain conformation characterized by the negative bond vector correlation. Moreover, we identify several generic dynamic features of polar active polymers, i.e., linear decay of the end-to-end vector correlation function, polymer-size-dependent crossover from ballistic to diffusive dynamics, and diffusion coefficients sensitive to head activity. A simple dynamics theory is proposed to faithfully explain these interesting dynamic phenomena. These sensitive structural and dynamical responses of active polymer to its head activity provide us a practical way to control active agents with applications in biomedical engineering.

关键词： Persistence length Polymer conformation changes Reptation Living matter & active matter Self-propelled particles Single polymer chains Ideal-chain models Langevin algorithm Polymer scaling theory

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Oxygen vacancy promising highly reversible phase transition in layered cathodes for sodium-ion batteries

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Nano Research 2021年第11期14卷 4100-4106页

作者： Kezhu Jiang Shaohua Guo Wei Kong Pang Xueping Zhang Tiancheng Fang Shao-fei Wang Fangwei Wang Xiaoyu Zhang Ping He Haoshen Zhou Center of Energy Storage Materials&Technology College of Engineering and Applied SciencesNational Laboratory of Solid State MicrostructuresCollaborative Innovation Center of Advanced MicrostructuresJiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing210093China Institute for Superconducting&Electronic Materials School of MechanicalMaterials and Mechatronics EngineeringUniversity of WollongongWollongongNSW2522Australia China Spallatoin Neutron Source Institute of High Energy PhysicsChinese Academy of SciencesDongguan523808China School of Nuclear Science and Technology University of Chinese Academy of SciencesBeijing101408China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of SciencesBeijing100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing101408China Songshan Lake Materials Laboratory Dongguan523808China School of materials science and engineering Jiangsu UniversityZhenjiang212013China Energy Technology Research Institute National Institute of Advanced Industrial Science and Technology(AIST)Umezono 1-1-1Tsukuba305-8568Japan

Phase transition is common during (de)-intercalating layered sodium oxides, which directly affects the structural stability and electrochemical performance. However, the artificial control of phase transition to achieve advanced sodium-ion batteries is lacking, since the remarkably little is known about the influencing factor relative to the sliding process of transition-metal slabs upon sodium release and uptake of layered oxides. Herein, we for the first time demonstrate the manipulation of oxygen vacancy concentrations in multinary metallic oxides has a significant impact on the reversibility of phase transition, thereby determining the sodium storage performance of cathode materials. Results show that abundant oxygen vacancies intrigue the return of the already slide transition-metal slabs between O_(3) and P_(3) phase transition, in contrast to the few oxygen vacancies and resulted irreversibility. Additionally, the abundant oxygen vacancies enhance the electronic and ionic conductivity of the Na0.9Ni0.3Co0.15Mn0.05Ti0.5O2 electrode, delivering the high initial Coulombic efficiency of 97.1%, large reversible capacity of 112.7 mAh·g−1, superior rate capability upon 100 C and splendid cycling performance over 1,000 cycles. Our findings open up new horizons for artificially manipulating the structural evolution and electrochemical process of layered cathodes, and pave a way in designing advanced sodium-ion batteries.

关键词： sodium-ion battery layered oxide O_(3)phase oxygen vacancy reversible phase transition

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Β-Tinb Alloy Unlocks Load-Adaptive Macro-Superlubricity in Ws2 Films

SSRN

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SSRN 2025年

作者： He, Jun Ye, Qinglin Wang, Desheng Jiang, Dong Li, Zhaowang Zhao, Xu Liu, Zhilu Gao, Xiaoming Sun, Jiayi Weng, Lijun Hu, Ming Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou730000 China

Simultaneously achieving macro-superlubricity and self-adaptivity in WS2-based lubrication films remains a significant challenge. Herein, a typical shape memory alloy (SMA), β-TiNb, was incorporated into the WS2 films by co-sputtering deposition method to enhance lubrication properties. The impact of β-TiNb concentrations on the crystallization, structure, mechanical attributes, and lubricating properties of WS2 films was rigorously examined. Impressively, the 1.5% TiNb additive in WS2 film exhibits an ultra-low coefficient of friction (COF) of 5.6×10-3 prior to sliding for 5.0×104 cycles, and a wear rate of 2.27×10-8 mm3 N-1 m-1. Additionally, TiNb1.5-WS2 film demonstrated a tunable COF within the range of 0.0056 ~ 0.0104 under loads from 1 ~ 9 N. The load-adaptive macro-superlubricity of TiNb1.5-WS2 film mainly originates from both of the dispersed β-TiNb SMA nanocrystals within the composite film, and the friction-induced well-crystalline WS2 nanocrystals in transfer films. The presence of β-TiNb SMA nanocrystals favor to transform the WS2 plastic deformation into its own elastic deformation during friction. The degeneration of crystallinity in the WS2 transfer film results in the failure of superlubricity. This pioneering strategy for constructing smart factor in lubrication film establishes a foundation for research into intelligent lubrication, thereby laying the groundwork for developing macro-superlubricity materials. © 2025, The Authors. All rights reserved.

关键词： Nanocrystals

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