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    题名 作者 年代 出处 被引量
1石墨烯材料检测技术的研究显示文摘本文主要介绍石墨烯比表面积(BET)、热重分析(TG)、拉曼分析(Raman)、原子力显微镜(AFM)、透射电子显微镜(TEM)等测试技术。金玲 陈华英 邓宏康 杨永强 刘渊 2014标准科学2014,,12:1
2Intralayer Phonons in Multilayer Graphene Moiré Superlattices显示文摘Moirépattern in twisted multilayers(tMLs)induces many emergent phenomena by subtle variation of atomic registry to modulate quasiparticles and their interactions,such as superconductivity,moiréexcitons,and moiréphonons.The periodic superlattice potential introduced by moirépattern also underlies patterned interlayer coupling at the interface of tMLs.Although this arising patterned interfacial coupling is much weaker than in-plane atomic interactions,it is crucial in moirésystems,as captured by the renormalized interlayer phonons in twisted bilayer transitional metal dichalcogenides.Here,we determine the quantitative relationship between the lattice dynamics of intralayer out-of-plane optical(ZO)phonons and patterned interfacial coupling in multilayer graphene moirésuperlattices(MLG-MS)by the proposed perturbation model,which is previously challenging for MLGs due to their out-of-phase displacements of adjacent atoms in one atomic plane.We unveil that patterned interfacial coupling introduces profound modulations on Davydov components of nonfolded ZO phonon that are localized within the AB-stacked constituents,while the coupling results in layer-extended vibrations with symmetry of moirépattern for moiréZO phonons.Our work brings further degrees of freedom to engineer moiréphysics according to the modulations imprinted on the phonon frequency and wavefunction.Miao-Ling Lin Min Feng Jiang-Bin Wu Fei-Rong Ran Tao Chen Wei-Xia Luo Heng Wu Wen-Peng Han Xin Zhang Xue-Lu Liu Yang Xu Hai Li Yu-Fang Wang Ping-Heng Tan 2022Research2022,,3:0
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