激子
异质结
凝聚态物理
扫描透射电子显微镜
材料科学
扫描隧道显微镜
范德瓦尔斯力
光谱学
联轴节(管道)
物理
纳米技术
透射电子显微镜
分子
量子力学
冶金
作者
Guangjie Zhang,Yang Ou,Peifeng Li,Qingliang Liao
标识
DOI:10.1002/9783527833887.ch5
摘要
van der Waals heterostructures (vdWHs) constructed by deterministic placement of different two-dimensional materials are found to exhibit exotic physical properties. The electronic structure as well as exciton behavior across the interface could be greatly modulated by interlayer interactions. Interlayer exchange coupling in vdWHs also gives rise to novel magnetic properties including valley splitting and large tunneling magnetoresistance. The moiré pattern induced by crystalline mismatch in vdWHs has become an ideal platform for studying superconductivity, interlayer excitons, and topological states. To probe these distinctive properties, advanced characterization techniques with high spatial and/or temporal resolution are used. In-plane as well as cross-sectional structures with atomic resolution can be obtained by scanning transmission electron microscopy (STEM). Correlated structural and electrical properties at multiple scales can be determined by scanning probe microscopy (SPM). Properties related to interlayer electrons, excitons, and phonons are probed by optical and vibrational spectroscopy characterizations.
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