Article
Physics, Applied
Francisco Sanchez-Ochoa
Summary: In this study, the binding, magnetic, and electron transport properties of 3d transition-metal adatoms on an antiferromagnetic graphene nanoribbon heterojunction were investigated. The results showed a strong interaction between the adatoms and the heterojunction, as well as different magnetic behaviors. Moreover, the adatoms induced spin splitting effects and generated spin currents.
PHYSICAL REVIEW APPLIED
(2022)
Article
Materials Science, Multidisciplinary
A. S. Fenta, C. O. Amorim, J. N. Goncalves, N. Fortunato, M. B. Barbosa, J. P. Araujo, M. Houssa, S. Cottenier, M. J. Van Bael, J. G. Correia, V. S. Amaral, L. M. C. Pereira
Summary: This study uses density functional theory to investigate the interaction between graphene and Hg adatoms, finding that Hg as isolated adatom is the most stable configuration. Isolated adatoms have minor effect on the electronic structure of graphene, while Hg monolayer configurations induce a metallic state.
JOURNAL OF PHYSICS-MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yangyang Hu, Danting Li, Xiaohui Liu, Tiancong Fan, Guiling Zhang, Yan Shang
Summary: The electronic and transport properties of covalently functionalized graphene sheets with FeBz groups were calculated by DFT and NEGF methods. The systems showed chemical stability and exhibited half-metallic behavior with up-spin state behaving as a semiconductor channel and down-spin state as a metallic channel. The functionalization introduced anisotropy magnetism and decreased the conductivity due to trapping effects. The transport properties were influenced by the number, alignment style, and spin polarized character of the functionalized groups.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Yuewen Mu, Si-Dian Li
Summary: The theoretical investigation on the newly synthesized biphenylene network (BPN) monolayer with alkaline metal adatoms reveals that the superconducting critical temperature (Tc) can be increased from 0.03 to 11.22 K by adsorbing Li atoms. This phenomenon is attributed to the enhanced density of states at the Fermi Level, softened vibrations, and electron pockets at the Fermi surface. The diffusion barrier of Li/Na adatoms is very low (<0.25 eV) and tends to decrease at higher coverage. Additionally, the adsorption of alkaline metal atoms significantly enhances the transport anisotropy and the direction with better conductance originates from the connected delocalized multi-center pi bonds. This study highlights the potential of metal atom adsorption for functionalizing BPN monolayers and suggests their future applications in superconducting and electronic devices. Moreover, it emphasizes the importance of carbon monolayer allotropes like BPN monolayer as versatile platforms for both fundamental research and device applications, stimulating explorations in various fields.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Tobias Preis, Sasha Vrbica, Jonathan Eroms, Jascha Repp, Jan M. van Ruitenbeek
Summary: One-dimensional diffusion of Co adatoms on graphene nanoribbons has been induced and studied using scanning tunnelling microscopy (STM). The observed current-induced motion of Co atoms along the nanoribbons follows a distribution expected for a thermally activated one-dimensional random walk, indicating significantly elevated temperatures of the nanoribbons compared to the underlying Au substrate. This model system has potential for further development in studying electromigration at the single-atom level.
Article
Nanoscience & Nanotechnology
Miriam Kosik, Marvin M. Mueller, Karolina Slowik, Garnett Bryant, Andres Ayuela, Carsten Rockstuhl, Marta Pelc
Summary: This study presents a framework for describing electron dynamics in hybrid systems of graphene nanoflakes coupled to adatoms, and investigates the impact of electron tunneling on quantum optical phenomena.
Article
Chemistry, Multidisciplinary
Hachemi Zitoune, Christophe Adessi, Lotfi Benchallal, Madani Samah
Summary: Doped graphene with transition metals is considered a good candidate for detecting gas molecules, opening up new possibilities for gas sensor devices. The adsorption of molecules significantly alters the electronic properties of graphene nanoribbons, affecting the conductivity, which is a key output quantity of gas sensors. Additionally, the adsorbed molecules induce specific impurity bands that play a role in transport properties.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
W. C. Silva, J. E. Sanches, A. M. Freitas, L. T. Lustosa, M. de Souza, A. C. Seridonio
Summary: The study proposes that multigraphene of ABC-type stacking can generate virtual bound states within the Coulomb insulating gap. These virtual states are counterparts to the atomic collapse phenomenon and have particle-hole symmetry. This phenomenon, known as adatomic collapse, is due to a flat band and divergent density of states near the Fermi energy. The Kramers-Kronig transformation of quasiparticle broadening confirms the existence of virtual bound states induced by van Hove singularities.
Article
Engineering, Environmental
Yiqun Jiang, Jingjing Zhang, Rajasekhar Balasubramanian
Summary: This study synthesized a novel heterostructured photocatalyst by coupling indium hydroxide with nitrogen-doped graphene aerogels. The photocatalyst showed impressive photodegradation performance for the model pollutant p-NP, mainly attributed to the synergistic effects between indium hydroxide and graphene aerogels. The efficient photocatalytic degradation was achieved through the favorable formation of photo-generated holes and hydroxyl radicals. Comparative evaluation with another indium-based heterostructured material demonstrated the superior performance of the synthesized photocatalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Min Gao, Jun Hu
Summary: Decorating graphene with Co adatoms can lead to the formation of various structures depending on the coverage, with spin-polarized Co atoms and the emergence of new bands near the Fermi level. These new bands often exhibit topological states characterized by the quantum anomalous Hall effect.
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
(2021)
Article
Chemistry, Physical
Vijay Laxmi, Weilong Dong, Haoqiang Wang, Dianyu Qi, Qiaoyan Hao, Zhengbiao Ouyang, Waqas Ahmad, Muhammad Najeeb Ullah Shah, Qunhui Yuan, Wenjing Zhang
Summary: This study utilized graphene quantum dots as a protective layer on the surface of black phosphorus to prevent degradation under oxygen and humidity conditions. The optimized field-effect transistors showed enhanced stability and electrical performance, even maintaining their characteristics for an extended period under high temperatures.
APPLIED SURFACE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Tingyue Xie, Ping Wang, Cuifeng Tian, Guozheng Zhao, Jianfeng Jia, Chaozheng He, Chenxu Zhao, Haishun Wu
Summary: In this study, the adsorption characteristics of graphene substrates modified by a single manganese atom with a vacancy or four nitrogen atoms were investigated using density functional theory (DFT). It was found that the adsorption activity of graphene-embedded manganese atom with a single vacancy was the highest among the three graphene supports.
Article
Materials Science, Multidisciplinary
Marvin M. Mueller, Miriam Kosik, Marta Pelc, Garnett W. Bryant, Andres Ayuela, Carsten Rockstuhl, Karolina Slowik
Summary: This article discusses the coupling between adsorbed atoms and one-dimensional chains and their impact on optical properties by systematically analyzing how coupling strength and adatom position affect the optical properties of the molecular chains in the model.
Article
Physics, Applied
Xue-Kun Chen, Xiao-Yan Hu, Pin-Zhen Jia, Guo-Feng Xie
Summary: This study systematically investigates the thermal transport behavior of PCF-graphene and reveals its high thermal conductivity and potential for applications in thermal management of microelectronics.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Chemical
Jingjing Yao, Dong-Sheng Li, Jianbei Qiu, Xuhui Xu, Hui Ying Yang
Summary: Density functional theory was employed to investigate the adsorption mechanism of B(OH)3 and B(OH)4- on different graphene models. The interaction forces between B(OH)3/B(OH)4- and oxygen-containing groups were quantified, highlighting their role in determining the differential adsorption. Hydrogen bonding, van der Waals interaction, and steric effects were found to be the main contributing factors to the adsorption process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Physics, Multidisciplinary
Juewen Fan, Bingyan Jiang, Jiaji Zhao, Ran Bi, Jiadong Zhou, Zheng Liu, Guang Yang, Jie Shen, Fanming Qu, Li Lu, Ning Kang, Xiaosong Wu
Summary: Introducing spin-orbit coupling in a Josephson junction based on a newly discovered V5S8 heterodimensional superlattice leads to unusual Josephson effects. The unique homointerface of the junctions eliminates extrinsic effects caused by interfaces and disorder. Asymmetric Fraunhofer patterns are observed with respect to magnetic field and current, which are influenced by an in-plane magnetic field. Analysis of the patterns reveals a nontrivial spatial distribution of the Josephson current intrinsic to the spin-orbit coupling in V5S8.
Article
Physics, Multidisciplinary
Zhen Liu, Zi-Xuan Yang, Chuan Xu, Jia-Ji Zhao, Lu-Junyu Wang, Yun-Qi Fu, Xue-Lei Liang, Hui-Ming Cheng, Wen-Cai Ren, Xiao-Song Wu, Ning Kang
Summary: In this study, a finite square-network based on two-dimensional crystalline superconductor Mo2C was fabricated and transport measurement was performed. Oscillations in resistance as a function of magnetic flux through the loops were observed, along with resistance dips at both matching field and fractional fillings. Temperature and current evolutions in magnetoresistance were carried out to study vortex dynamics. The interaction between thermally activated vortices and currents induced in the loops led to an enhanced amplitude of oscillation. The effective activation energy for vortex was reduced by the driving current, resulting in stronger vortex interaction. Furthermore, the effective potential barrier for vortex dissipation was derived using the thermally activated vortex creep model, showing a well-defined correspondence with structures in magnetoresistance. This work demonstrates the potential of low-dimensional crystalline superconducting networks based on Mo2C in studying vortex arrangements and dynamics, paving the way for further investigations with different configurations.
Article
Physics, Multidisciplinary
Bingyan Jiang, Jiaji Zhao, Lujunyu Wang, Ran Bi, Juewen Fan, Zhilin Li, Xiaosong Wu
Summary: The study investigates an unusual chirality-dependent Hall effect in a tilted Weyl semimetal Co3Sn2S2 with broken time-reversal symmetry, and confirms the satisfaction of the reciprocal relations. Two Berry curvature effects, namely anomalous velocity and chiral chemical potential, contribute to the observed Hall effect, suggesting their intriguing connection according to the reciprocal relations.
Article
Physics, Applied
Juewen Fan, Bingyan Jiang, Jiaji Zhao, Ran Bi, Jiadong Zhou, Zheng Liu, Ning Kang, Fanming Qu, Li Lu, Xiaosong Wu
Summary: The quality of a superconductor-normal metal-superconductor Josephson junction relies on the transparency of the superconductor-normal metal interface. We present a technique for fabricating planar Josephson junctions with perfect interfaces. By utilizing the strong inverse proximity effect in Al/V5S8 bilayers, we can induce a resistive state in the Al layer. The high transparency of the homointerface and the unique normal metal allow for the flow of Josephson supercurrent across a 2.9 µm weak link. Additionally, our Josephson junction exhibits a large critical current and a significant product of the critical current and the normal state resistance.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Jingjing Niu, Bao-Jie Liu, Yuxuan Zhou, Tongxing Yan, Wenhui Huang, Weiyang Liu, Libo Zhang, Hao Jia, Song Liu, Man-Hong Yung, Yuanzhen Chen, Dapeng Yu
Summary: This study introduces and experimentally demonstrates an inverse-engineering approach using parameterized states of the Schrodinger equation to construct desired evolutions for flexible customization of adiabatic processes. Experimental results in a superconducting Xmon device show that this method achieves the fastest speed and highest efficiency in coherent state transfer tasks among recent experiments.
PHYSICAL REVIEW APPLIED
(2022)
Article
Physics, Multidisciplinary
Zhongchu Ni, Sai Li, Libo Zhang, Ji Chu, Jingjing Niu, Tongxing Yan, Xiuhao Deng, Ling Hu, Jian Li, Youpeng Zhong, Song Liu, Fei Yan, Yuan Xu, Dapeng Yu
Summary: Researchers propose and demonstrate a method for eliminating unwanted ZZ interaction in superconducting qubit systems. By applying a weak microwave drive, ZZ interaction can be noninvasively cancelled, improving the quality of quantum operations.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Bingyan Jiang, Jiaji Zhao, Jiangyuan Qian, Shen Zhang, XiaoBin Qiang, Lujunyu Wang, Ran Bi, Juewen Fan, Hai-Zhou Lu, Enke Liu, Xiaosong Wu
Summary: This study observes a magnetic-field-antisymmetric Seebeck effect in a tilted Weyl semimetal, indicating that tilting the Weyl cone can break the Lorentz invariance and introduce new physics. The phenomenon is further confirmed by theoretical calculations and experiments.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Jiadong Zhou, Wenjie Zhang, Yung-Chang Lin, Jin Cao, Yao Zhou, Wei Jiang, Huifang Du, Bijun Tang, Jia Shi, Bingyan Jiang, Xun Cao, Bo Lin, Qundong Fu, Chao Zhu, Wei Guo, Yizhong Huang, Yuan Yao, Stuart S. P. Parkin, Jianhui Zhou, Yanfeng Gao, Yeliang Wang, Yanglong Hou, Yugui Yao, Kazu Suenaga, Xiaosong Wu, Zheng Liu
Summary: This study reports an intrinsic heterodimensional superlattice consisting of vanadium disulfide and a vanadium sulfide chain array. The superlattice exhibits unconventional stacking and an unexpected Hall effect due to out-of-plane Berry curvature induced by an in-plane magnetic field.
Article
Physics, Multidisciplinary
Ji Chu, Xiaoyu He, Yuxuan Zhou, Jiahao Yuan, Libo Zhang, Qihao Guo, Yongju Hai, Zhikun Han, Chang-Kang Hu, Wenhui Huang, Hao Jia, Dawei Jiao, Sai Li, Yang Liu, Zhongchu Ni, Lifu Nie, Xianchuang Pan, Jiawei Qiu, Weiwei Wei, Wuerkaixi Nuerbolati, Zusheng Yang, Jiajian Zhang, Zhida Zhang, Wanjing Zou, Yuanzhen Chen, Xiaowei Deng, Xiuhao Deng, Ling Hu, Jian Li, Song Liu, Yao Lu, Jingjing Niu, Dian Tan, Yuan Xu, Tongxing Yan, Youpeng Zhong, Fei Yan, Xiaoming Sun, Dapeng Yu
Summary: Translating high-level global operations into hardware-native logic gates, known as quantum compiling, is crucial for implementing quantum algorithms on realistic devices. By optimizing compilation and demonstrating low-depth synthesis of quantum logic gates on a superconducting quantum processor, the efficiency of near-term quantum computers can be substantially improved, enabling more meaningful quantum applications on noisy devices.
Article
Chemistry, Physical
Congcong Zhang, Teng Tu, Jingyue Wang, Yongchao Zhu, Congwei Tan, Liang Chen, Mei Wu, Ruixue Zhu, Yizhou Liu, Huixia Fu, Jia Yu, Yichi Zhang, Xuzhong Cong, Xuehan Zhou, Jiaji Zhao, Tianran Li, Zhimin Liao, Xiaosong Wu, Keji Lai, Binghai Yan, Peng Gao, Qianqian Huang, Hai Xu, Huiping Hu, Hongtao Liu, Jianbo Yin, Hailin Peng
Summary: The scaling of silicon-based transistors faces challenges such as interface imperfections and gate current leakage at sub-ten-nanometre technology nodes. To achieve smaller channel sizes, less interfacial scattering, and more efficient gate-field penetration, high-mobility two-dimensional layered semiconductors are expected as channel materials. However, progress in 2D electronics is hindered by the lack of a high dielectric constant dielectric with an atomically flat and dangling-bond-free surface.
Article
Engineering, Electrical & Electronic
Jingjing Niu, Libo Zhang, Yang Liu, Jiawei Qiu, Wenhui Huang, Jiaxiang Huang, Hao Jia, Jiawei Liu, Ziyu Tao, Weiwei Wei, Yuxuan Zhou, Wanjing Zou, Yuanzhen Chen, Xiaowei Deng, Xiuhao Deng, Changkang Hu, Ling Hu, Jian Li, Dian Tan, Yuan Xu, Fei Yan, Tongxing Yan, Song Liu, Youpeng Zhong, Andrew N. Cleland, Dapeng Yu
Summary: Low-loss superconducting aluminium cables and on-chip impedance transformers are used to connect qubit modules and create high-fidelity intermodule state transfer in superconducting quantum computing networks. Scaling is a key challenge in superconducting quantum computing, which can be addressed by building modular systems with suitable interconnects. The reported low-loss interconnects based on pure aluminium coaxial cables and on-chip impedance transformers demonstrate comparable performance with transmon qubits and enable intermodule quantum state transfer with high fidelity.
NATURE ELECTRONICS
(2023)
Article
Chemistry, Applied
Chengyi Zhang, Shuang Xia, Miao Yan, Fen Luo, Bikui Zhang, Wei Zou, Hui Gong
Summary: In this study, we aimed to explore the mechanisms and targets of Diwu Yanggan Capsule (DWYG), a traditional Chinese medicine used in liver regeneration. We obtained the active ingredients and targets of DWYG from the TCMSP database and DEGs related to liver regeneration from the GEO database. We also searched for liver regeneration-related genes in disease databases and integrated them with the herbal and GEO data to identify potential targets of DWYG in liver regeneration. Our results revealed 73 potential targets of DWYG in liver regeneration and suggested that it may act through pathways such as MAPK, TNF, and IL-17. We also found that quercetin, a major component of DWYG, had a low binding energy to three key targets. This study highlights the potential of DWYG in facilitating liver regeneration, with quercetin possibly being its core ingredient.
NATURAL PRODUCT RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Jiaji Zhao, Bingyan Jiang, Shen Zhang, Lujunyu Wang, Enke Liu, Zhilin Li, Xiaosong Wu
Summary: In this study, a magnetoresistance technique was used to investigate the kagome material Co3Sn2S2. Besides magnon magnetoresistance, chirality-dependent magnetoresistance, and chiral-anomaly-induced magnetoresistance, an intriguing orbital magnetoresistance scaling only with the out-of-plane field was observed, indicating its two-dimensional nature.
Article
Materials Science, Multidisciplinary
Yanan Li, Huichao Wang, Jingyue Wang, Chunming Wang, Yanzhao Liu, Jun Ge, Jingjing Niu, Wenjie Zhang, Pinyuan Wang, Ran Bi, Jinglei Zhang, Ji-Yan Dai, Jiaqiang Yan, David Mandrus, Nitin Samarth, Haizhou Lu, Xiaosong Wu, Jian Wang
Summary: Extensive studies have shown different magnetothermoelectric transport behavior in the massive Dirac material ZrTe5 compared to other Dirac materials. While thin flakes exhibit commonly observed positive magnetoresistance in a perpendicular magnetic field, they show a sharp negative magnetothermopower. In a parallel magnetic field, a negative longitudinal magnetoresistance is observed, but a remarkable positive magnetothermopower is observed for fields parallel to the thermal gradients.
Article
Materials Science, Multidisciplinary
Jiaji Zhao, Bingyan Jiang, Jinying Yang, Lujunyu Wang, Hengjie Shi, Guang Tian, Zhilin Li, Enke Liu, Xiaosong Wu
Summary: In a magnetic metal, the sum of the ordinary Hall resistance and the anomalous Hall resistance is generally considered as the Hall resistance. However, this empirical relation is no longer valid when either the ordinary Hall angle or the anomalous Hall angle is not small. By using the proper conductivity relation, a B-linear magnetoresistance induced by the anomalous Hall effect (AHE) is revealed, which gives rise to a characteristic bowtie shape depending on the sign of the anomalous Hall angle. The nonlinearity of the Hall resistance in a single-band system and the appearance of a B-symmetric component in the Hall reflect the fundamental difference between the ordinary Hall effect and the AHE. Furthermore, the proposed mechanism can well explain the unusual magnetoresistance and Hall effect observed in Co3Sn2S2.
