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Probing the properties of lattice vibrations and surface electronic states in magnetic semiconductor CrPS₄.

ABSTRACT: Searching for multifunctional materials with magnetism and semiconductivity is one of the goals of research into two-dimensional (2D) systems. Herein, we report a chemical vapor transport method to successfully synthesize a layered magnetic semiconductor, CrPS₄. Under parallel and perpendicular polarization configurations, the anisotropic optical response of the (001) surface was investigated by polarized Raman spectroscopy; the Raman peak intensity was recorded with the crystal rotated from 0° to 360°, taking the symmetry of the Raman tensor into account; the A or B vibrational mode of different Raman peaks can be clearly distinguished. Moreover, the electronic state of the (001) single-crystal surface was investigated by ultraviolet photoelectron spectroscopy (UPS), which reveals the valence band position and work function of the (001) surface.

SUBMITTER: Wu H

PROVIDER: S-EPMC9072214 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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Probing the properties of lattice vibrations and surface electronic states in magnetic semiconductor CrPS4.

Wu Hongbiao H Chen Haiping H

RSC advances 20190930 53

Searching for multifunctional materials with magnetism and semiconductivity is one of the goals of research into two-dimensional (2D) systems. Herein, we report a chemical vapor transport method to successfully synthesize a layered magnetic semiconductor, CrPS4. Under parallel and perpendicular polarization configurations, the anisotropic optical response of the (001) surface was investigated by polarized Raman spectroscopy; the Raman peak intensity was recorded with the crystal rotat ...[more]

PMID: 35529406

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