Pressure effect on structure transition and optical anisotropy in MoO3
APPLIED PHYSICS LETTERS(2022)
摘要
We investigated the phase transition and anisotropic optical property of MoO3 under pressure by optical spectroscopy. An alpha-MoO3 to MoO3-II transition and another MoO3-II to MoO3-III transition were observed at 11 and at 27 GPa, respectively. Accompanied by the structural transition, its optical anisotropy also changes with pressure. While maintaining the similar angle-resolved intensity patterns, the polarization angle with the maximum intensity of the Mo-O-2-Mo symmetric stretching mode moves from 90 degrees to 105 degrees then back to 90 degrees with pressure. The result is helpful to understand the mechanism of the pressure-induced phase transition and tune the anisotropic optical properties of MoO3. Published under an exclusive license by AIP Publishing.
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关键词
Metal-Insulator Transition
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