Article
Chemistry, Multidisciplinary
Vishakha Gupta, Rakshit Jain, Yafei Ren, Xiyue S. Zhang, Husain F. Alnaser, Amit Vashist, Vikram V. Deshpande, David A. Muller, Di Xiao, Taylor D. Sparks, Daniel C. Ralph
Summary: The advantages of mechanically stacked samples of van der Waals materials for controlling the surface state of a three-dimensional topological insulator are demonstrated. The interaction between the topological surface state and an adjacent magnet layer can be controlled, resulting in an observed anomalous Hall effect.
Article
Materials Science, Multidisciplinary
Chengan Lei, Xinru Li, Yandong Ma, Zhao Qian
Summary: This study presents a general scheme for achieving nonvolatile electrical control of the anomalous valley Hall (AVH) effect based on multiferroic van der Waals heterostructure. By stacking ferromagnetic monolayer on ferroelectric monolayer, the reversible switching of AVH can be finely manipulated, and the ferroelectric nonvolatility ensures the stability of the AVH state. In addition, the sign of the valley polarization can be inverted by reversing ferroelectric polarization.
Article
Chemistry, Multidisciplinary
Andres E. Llacsahuanga Allcca, Xing-Chen Pan, Ireneusz Miotkowski, Katsumi Tanigaki, Yong P. Chen
Summary: The study demonstrates that magnetism can be introduced into topological insulators by using the magnetic proximity effect with van der Waals materials. The anomalous Hall effect was observed in these heterostructures, and the effect can be modulated by controlling the carrier density with electrostatic gating.
Article
Chemistry, Multidisciplinary
Jianchen Dang, Mingwei Yang, Xin Xie, Zhen Yang, Danjie Dai, Zhanchun Zuo, Can Wang, Kuijuan Jin, Xiulai Xu
Summary: In the WS2/LaMnO3 thin film heterostructure, the valley polarization of monolayer WS2 can be greatly enhanced up to 80%, and this greatly enhanced valley polarization can be maintained to a temperature as high as 160K with a valley polarization of 53%.
Article
Chemistry, Multidisciplinary
Meng Huang, Shanshan Wang, Zhaohao Wang, Ping Liu, Junxiang Xiang, Chao Feng, Xiangqi Wang, Zengming Zhang, Zhenchao Wen, Hongjun Xu, Guoqiang Yu, Yalin Lu, Weisheng Zhao, Shengyuan A. Yang, Dazhi Hou, Bin Xiang
Summary: The study reveals a colossal anomalous Hall conductivity in a 1T-CrTe2 flake, dominated by the extrinsic skew scattering process rather than the intrinsic Berry phase effect. This phenomenon defies the dilemma faced by most ferromagnets, achieving both a large anomalous Hall angle and high electric conductivity simultaneously.
Article
Chemistry, Multidisciplinary
Huije Ryu, Yangjin Lee, Hyun-Jung Kim, Seoung-Hun Kang, Yoongu Kang, Kangwon Kim, Jungcheol Kim, Blanka E. Janicek, Kenji Watanabe, Takashi Taniguchi, Pinshane Y. Huang, Hyeonsik Cheong, In-Ho Jung, Kwanpyo Kim, Young-Woo Son, Gwan-Hyoung Lee
Summary: This study discusses the characteristics of phase transition in 2D materials, demonstrates the phase transition properties of MoTe2 at different layers, and explores how to control the vertical and lateral phase transitions of MoTe2 by inserting graphene layers and controlling the thickness of heterostructures.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Physics, Condensed Matter
Xuesong Liang, Jin Sun, Zhizhou Yu
Summary: Based on first-principles calculations, this study investigates the effects of biaxial strains and electric fields on the magnetic, electronic, and valleytronic properties of a two-dimensional CrBr3/VSe2 van der Waals heterostructure. The results show that a magnetic phase transition from parallel to antiparallel occurs when the compressive strain exceeds -2%. A large valley splitting of about 30.8 meV is obtained under a compressive strain of -4% in the CrBr3/VSe2 heterostructure. These findings provide new insights into the future valleytronic applications of two-dimensional magnetic vdW heterostructures.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Junho Choi, Jacob Embley, Daria D. Blach, Raul Perea-Causin, Daniel Erkensten, Dong Seob Kim, Long Yuan, Woo Young Yoon, Takashi Taniguchi, Kenji Watanabe, Keiji Ueno, Emanuel Tutuc, Samuel Brem, Ermin Malic, Xiaoqin Li, Libai Huang
Summary: Transition metal dichalcogenide heterostructures serve as a versatile platform to explore electronic and excitonic phases. In this study, the spatial-temporal dynamics of interlayer excitons and hot-plasma phase in a MoSe2/WSe2 twisted bilayer are investigated using pump-probe microscopy. The rapid expansion of the hot plasma driven by Fermi pressure and Coulomb repulsion is observed.
Article
Chemistry, Multidisciplinary
Xiaoqian Zhang, Siddhesh C. Ambhire, Qiangsheng Lu, Wei Niu, Jacob Cook, Jidong Samuel Jiang, Deshun Hong, Laith Alahmed, Liang He, Rong Zhang, Yongbing Xu, Steven S-L Zhang, Peng Li, Guang Bian
Summary: The discovery of interfacial topological Hall effect provides a platform to explore physics between topology and magnetism. By observing a giant THE signal in CrTe2/Bi2Te3 van der Waals heterostructures, it is attributed to an optimized combination of 2D ferromagnetism in CrTe2, strong SOC in Bi2Te3, and an atomically sharp interface. This finding suggests a convenient platform for achieving large interfacial THE in hybrid systems, which could be utilized for quantum science and information storage devices.
Article
Materials Science, Multidisciplinary
Mayuri Bora, Sushant Kumar Behera, Prasanjit Samal, Pritam Deb
Summary: Through computational simulation, this study predicts the occurrence of valley contrasting quantum anomalous Hall effect in graphene and CrBr3 heterostructure, primarily due to the magnetic proximity coupling between the two materials.
Article
Physics, Applied
Jun Zhao, Xuehu Jin, Hui Zeng, Can Yao, Gang Yan
Summary: The study investigated the impact of MoSi2N4/CrCl3 heterostructure on valley-dependent properties, showing that the magnetic proximity effect can enhance valley splitting and valley-contrasting transport properties. The valley-dependent properties of MoSi2N4 monolayer are predicted to be robust, protected by the outermost N-Si sublayers.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Ting Zhang, Xilong Xu, Baibiao Huang, Ying Dai, Liangzhi Kou, Yandong Ma
Summary: By interlayer sliding, the layer-polarized anomalous Hall effect (LP-AHE) is achieved in valleytronic van der Waals bilayers. The LP-AHE can be strongly coupled with sliding ferroelectricity, making it ferroelectrically controllable and reversible. This new mechanism provides a significant direction for realizing the LP-AHE and exploring its application in electronics.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Yazhou Deng, Ziji Xiang, Bin Lei, Kejia Zhu, Haimen Mu, Weizhuang Zhuo, Xiangyu Hua, Mingjie Wang, Zhengfei Wang, Guopeng Wang, Mingliang Tian, Xianhui Chen
Summary: This study reports the layer-number-dependent magnetotransport properties in the 2D ferromagnet Fe5GeTe2. It is found that the ferromagnetism changes from soft to hard upon thinning, and a perpendicular easy-axis anisotropy is achieved in bilayer flakes. The monolayer flakes exhibit spin-glass-like behavior. These results demonstrate the tunability of magnetotransport properties in atomically thin van der Waals magnets, which holds promise for engineering high-performance spintronic devices.
Article
Multidisciplinary Sciences
Long Zhang, Fengcheng Wu, Shaocong Hou, Zhe Zhang, Yu-Hsun Chou, Kenji Watanabe, Takashi Taniguchi, Stephen R. Forrest, Hui Deng
Summary: Controlling matter-light interactions with cavities is crucial in modern science and technology. By integrating MoSe2-WS2 heterobilayers in a microcavity, cooperative coupling between moire-lattice excitons and microcavity photons has been established, providing versatile control of both matter and light. This moire polariton system combines strong nonlinearity and microscopic-scale tuning of matter excitations, offering a platform to study collective phenomena from tunable arrays of quantum emitters.
Review
Chemistry, Physical
Abdullah Rasmita, Wei-bo Gao
Summary: This article discusses the importance of developing information processing devices with minimum carbon emissions in the information age. It introduces the concept of using valleys to encode information, reviews valley physics in monolayer TMD and 2D heterostructures, and summarizes optical valley control methods in these materials.
Article
Physics, Multidisciplinary
Fanghang Yu, Xudong Zhu, Xikai Wen, Zhigang Gui, Zeyu Li, Yulei Han, Tao Wu, Zhenyu Wang, Ziji Xiang, Zhenhua Qiao, Jianjun Ying, Xianhui Chen
Summary: The study reveals that the new superconducting phase of the high-pressure Kagome superconductor AV(3)Sb(5) is closely related to interlayer Sb2-Sb2 interactions, where the formation of Sb2-Sb2 bonds tunes the system's dimensionality and enhances the density of states, resulting in an increase in the critical temperature (Tc).
PHYSICAL REVIEW LETTERS
(2022)
Article
Food Science & Technology
Y. Wang, X. Cao, Z. -L Wang, X. Han, Y. -L Han, D. Wu, M. Hui, F. Yao, H. Wang, H. Li
Summary: The study found that kaolin particle film can reduce the occurrence of grapevine downy mildew and enhance the defense response of grapevines. This indicates the potential of developing KPF for the control of downy mildew.
AUSTRALIAN JOURNAL OF GRAPE AND WINE RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Liang Zhang, Tingting Xue, Lin Yuan, Feifei Gao, Xiaoyun Hao, Chenlu Yang, Lin Wang, Yulei Han, Hua Li, Hua Wang
Summary: This study assessed the effects of desertified land reclamation on microbial communities in vineyards, showing that different vineyard types had different microbial compositions and soil properties. Reclamation increased microbial diversity and was associated with changes in soil properties.
Article
Agriculture, Multidisciplinary
Teng-fei XU, Yu-rui GUO, Wen-yuan WANG, Xiao-jian YUAN, Yan-nan CHU, Xiao-wei WANG, Yu-lei HAN, Yue-jin WANG, Rui SONG, Yu-lin FANG, Lu-jun WANG, Yan XU
Summary: This study investigated the effects of PAC concentration and embryo collection time on embryo formation, germination, and seedling rates in seedless grape breeding. The results showed that different PAC concentrations had varying impacts on the development of embryos from different grape varieties.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2022)
Article
Chemistry, Multidisciplinary
Peng Deng, Alexander Grutter, Yulei Han, Megan E. Holtz, Peng Zhang, Patrick Quarterman, Shuaihang Pan, Shifei Qi, Zhenhua Qiao, Kang L. Wang
Summary: In this study, the annihilation and creation of topological surface states in the SnTe/CBST heterostructures were demonstrated, and systematic changes in transport behaviors with respect to changing Fermi level and thickness were revealed.
Article
Physics, Multidisciplinary
Zeyu Li, Yulei Han, Zhenhua Qiao
Summary: A new method for realizing QAHE effect with tunable Chern numbers by manipulating the magnetization orientation is proposed. It is found experimentally that by controlling the components of magnetization in different directions, two distinct phases with low and high Chern numbers can be achieved.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Junjie Zeng, Rui Xue, Tao Hou, Yulei Han, Zhenhua Qiao
Summary: In this study, we theoretically investigate the construction and quantum transport properties of topological conducting domain walls between AB/BA stacking regions in bilayer graphene systems with tunable twisting angles. We find that the lattice reconstruction is more significant for smaller twisting angles, leading to sharper domain boundaries. Additionally, we observe robust behavior and a specific current partition law among conducting channels for topological zero-line modes localized at the domain walls.
FRONTIERS OF PHYSICS
(2022)
Correction
Chemistry, Multidisciplinary
Peng Deng, Alexander Grutter, Yulei Han, Megan E. Holtz, Peng Zhang, Patrick Quarterman, Shuaihang Pan, Shifei Qi, Zhenhua Qiao, Kang L. Wang
Article
Chemistry, Inorganic & Nuclear
Zhikai Qi, Huizhi Gao, Xudong Zhu, Zhuoya Lu, Xian-Ming Zhang
Summary: Zero-dimensional (0D) organic-inorganic hybrid metal halides have unique electronic structures and broadband emission properties. Researchers designed a new 0D bismuth hybrid, which showed intrinsic broadband yellow emissions under blue light excitation. This discovery is important for the development of novel high-performance yellow light-emitting materials.
INORGANIC CHEMISTRY
(2022)
Article
Psychology, Social
Guofang Liu, Qian Su, Yulei Han
Summary: Children's intelligence mindset is crucial for their happiness and academic development. Research has shown the impact of parents' failure mindset on their children's intelligence mindset. This study examined this influence in the Chinese culture and found that parents' academic trust mediates the relationship between parents' failure mindset and children's intelligence mindset.
PERSONALITY AND INDIVIDUAL DIFFERENCES
(2023)
Article
Multidisciplinary Sciences
Yang Luo, Yulei Han, Jinjin Liu, Hui Chen, Zihao Huang, Linwei Huai, Hongyu Li, Bingqian Wang, Jianchang Shen, Shuhan Ding, Zeyu Li, Shuting Peng, Zhiyuan Wei, Yu Miao, Xiupeng Sun, Zhipeng Ou, Ziji Xiang, Makoto Hashimoto, Donghui Lu, Yugui Yao, Haitao Yang, Xianhui Chen, Hong-Jun Gao, Zhenhua Qiao, Zhiwei Wang, Junfeng He
Summary: By using angle-resolved photoemission measurements, we have observed a Van Hove singularity perfectly aligned with the Fermi level in the kagome superconductor CsV3-xTaxSb5 (x similar to 0.4). This material achieves a record-high superconducting transition temperature among all the current variants of AV(3)Sb(5) (A = Cs, Rb, K) at ambient pressure. Doping dependent measurements reveal the crucial role of the Van Hove scenario in enhancing superconductivity, and spectroscopic-imaging scanning tunneling microscopy measurements indicate a distinct superconducting state in this system.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yulei Han, Zhi Yan, Zeyu Li, Xiaohong Xu, Zhenyu Zhang, Qian Niu, Zhenhua Qiao
Summary: This study theoretically confirms that re-intercalation of Re in a graphene/CrI3 heterostructure can induce significant Rashba spin-orbit coupling and open up large band gaps at K and K' valleys, as well as a global band gap over 5.5 meV, enabling the realization of the quantum anomalous Hall effect.
Article
Materials Science, Multidisciplinary
Wenhao Liang, Tao Hou, Junjie Zeng, Zheng Liu, Yulei Han, Zhenhua Qiao
Summary: Recently, magnetic domain walls were observed in antiferromagnetic topological insulators MnBi2Te4. In this study, the layer dependence and distribution of intrinsic topological zero-line modes (ZLMs) along the domain walls in MnBi2Te4 multilayers were investigated. The role of spatial layer degree of freedom and magnetic domain wall configurations in determining electronic transport properties and ZLMs distribution in antiferromagnetic topological insulator systems was revealed. The findings provide a strategy for manipulating ZLMs and distinguishing magnetic structures.
