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| 1 | Anisotropic Dzyaloshinskii-Moriya interaction protected by D_(2d) crystal symmetry in two-dimensional ternary compounds显示文摘Magnetic skyrmions,topologically protected chiral spin swirling quasiparticles,have attracted great attention in fundamental physics and applications.Recently,the discovery of two-dimensional(2D)van der Waals(vdW)magnets have aroused great interest due to their appealing physical properties.Moreover,both experimental and theoretical works have revealed that isotropic Dzyaloshinskii–Moriya interaction(DMI)can be achieved in 2D magnets or ferromagnet-based heterostructures.However,2D magnets with anisotropic DMI haven’t been reported yet.Here,via using first-principles calculations,we unveil that anisotropic DMI protected by D_(2d)crystal symmetry can exist in 2D ternary compounds MCuX_(2)(M:3d transition metal(TM),X:group VIA).Interestingly,by using micromagnetic simulations,we demonstrate that ferromagnetic(FM)antiskyrmions,FM bimerons,antiferromagnetic(AFM)antiskyrmions,and AFM bimerons can be realized in the MCuX_(2)family.Our discovery opens up an avenue to creating antiskyrmions and bimerons with anisotropic DMI protected by D_(2d)crystal symmetry in 2D magnets. | Yonglong Ga Qirui Cui Yingmei Zhu Dongxing Yu Liming Wang Jinghua Liang Hongxin Yang | 2022 | npj Computational Materials2022，，1： | 0 |
| 2 | Epigenetic remodeling by DNA glycosylases during rice reproduction显示文摘Cytosine methylation is a covale nt modificatio n of DNA that regulates important processes in eukaryotic genomes,including gene transcription,transposon silencing,and genomic imprinting(Law and Jacobsen,2010).DNA methylation patterns are faithfully duplicated upon cell division to ensure genome integrity and to maintain lineage-specific cell fate.However,DNA methylation also needs to be dynamically reprogramed or reconfigured during development to allow establishment of new cellular identity and transcriptional state,which plays a prominent role in animal development and reproduction,and is increasingly being appreciated for reproductive success in flowering plants(Walker et al.,2018;Ono and Kinoshita,2021). | Mingzhuo Li Qirui Cui Xiang-Qian Zhang Tzung-Fu Hsieh | 2021 | Molecular Plant2021，14，9： | 0 |
| 3 | Systematic screening and structural characterization of dipeptides using offline 2D LC-LTQ-Orbitrap MS:A case study of Cordyceps sinensis显示文摘Cordyceps sinensis(C.sinensis)is a widely used and highly valuable traditional Chinese medicine.Several dipeptides have been detected in C.sinensis,but current scientific knowledge of its chemical makeup remains limited.In this study,an improved approach that integrates offline two-dimensional liquid chromatography(2D LC)separation,precursor ion list,library screening,and diagnostic ion filtering was established to systematically screen and characterize dipeptides in C.sinensis.Offline 2D LC integrating hydrophilic interaction LC and reverse phase separations was established to eliminate interference and identify the target dipeptides.A library containing the potential 400 dipeptides was created,and a precursor ion list with all theoretical precursor ions was adopted to trigger the MS/MS scan with high sensitivity.To identify dipeptides,the type and connection sequence of amino acids were determined according to the product ions.Ile and Leu residues were differentiated for the first time according to the characteristic ion at m/z 69.07.Ultimately,170 dipeptides were identified or tentatively characterized from C.sinensis,and most are reported for the first time in this species herein.In addition,the identified dipeptides were also applied for discrimination among the three Cordyceps species,and 11 markers were identified.The obtained results provide a deeper understanding of the chemical basis of C.sinensis. | Xiaodie Li Changliang Yao Yun Li Zhengming Qian c Wenlong Wei Jianqing Zhang Jiayuan Li Qirui Bi Wenjia Li Yajun Cui De-an Guo | 2022 | Journal of Pharmaceutical Analysis2022，12，2： | 0 |
| 4 | Magnetic anisotropy,exchange coupling and Dzyaloshinskii–Moriya interaction of two-dimensional magnets显示文摘The two-dimensional(2D)magnets provide novel opportunities for understanding magnetism and investigating spin related phenomena in several atomic thickness.Multiple features of 2D magnets,such as critical temperatures,magnetoelectric/magneto-optic responses,and spin configurations,depend on the basic magnetic terms that describe various spins interactions and cooperatively determine the spin Hamiltonian of studied systems.In this review,we present a comprehensive survey of three types of basic terms,including magnetic anisotropy that is intimately related with longrange magnetic order,exchange coupling that normally dominates the spin interactions,and Dzyaloshinskii–Moriya interaction(DMI)that favors the noncollinear spin configurations,from the theoretical aspect.We introduce not only the physical features and origin of these crucial terms in 2D magnets but also many correlated phenomena,which may lead to the advance of 2D spintronics. | Qirui Cui Liming Wang Yingmei Zhu Jinghua Liang Hongxin Yang | 2023 | Frontiers of physics2023，18，1： | 0 |
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