Phonon Anharmonicity and Spin–Phonon Coupling in CrI3

Autor:	Luca Tomarchio, Lorenzo Mosesso, Salvatore Macis, Loi T. Nguyen, Antonio Grilli, Martina Romani, Mariangela Cestelli Guidi, Robert J. Cava, Stefano Lupi
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	optical spectroscopy van der Waals ferromagnet spin–phonon coupling phonon anharmonicity Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Zdroj:	Materials, Vol 16, Iss 14, p 4909 (2023)
Druh dokumentu:	article
ISSN:	1996-1944
DOI:	10.3390/ma16144909
Popis:	We report on the far-infrared, temperature-dependent optical properties of a CrI3 transition metal halide single crystal, a van der Waals ferromagnet (FM) with a Curie temperature of 61 K. In addition to the expected phonon modes determined by the crystalline symmetry, the optical reflectance and transmittance spectra of CrI3 single crystals show many other excitations as a function of temperature as a consequence of the combination of a strong lattice anharmonicity and spin–phonon coupling. This complex vibrational spectrum highlights the presence of entangled interactions among the different degrees of freedom in CrI3.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/66eaeed572db4c29a179889224dc0e00 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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