Visualizing Exotic Orbital Texture in the Single-Layer Mott Insulator 1T-TaSe2
作者： Oliver R. Albertini , Jonathan A. Sobota , Zhi-Xun Shen , Yi Chen , Hyejin Ryu
DOI: 10.1038/S41567-019-0744-9
关键词:
摘要: Mott insulating behavior is induced by strong electron correlation and can lead to exotic states of matter such as unconventional superconductivity quantum spin liquids. Recent advances in van der Waals material synthesis enable the exploration novel systems two-dimensional limit. Here we report characterization local electronic properties single- few-layer 1T-TaSe2 via spatial- momentum-resolved spectroscopy involving scanning tunneling microscopy angle-resolved photoemission. Our combined experimental theoretical study indicates that induces a robust insulator state single-layer accompanied orbital texture. Inclusion interlayer coupling weakens phase 1T-TaSe2, seen reduction its energy gap quenching correlation-driven texture bilayer trilayer 1T-TaSe2. results establish useful new platform for investigating physics two dimensions.
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