Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3

Abstract The two-dimensional van der Waals (vdW) magnets retaining magnetic order in atomically thin limit demonstrate challenging physical phenomena and they are considered as prospective building blocks for construction of advanced spintronics and nanoelectronics devices. Here, we present experime...

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Autores principales:	D. P. Kozlenko, O. N. Lis, S. E. Kichanov, E. V. Lukin, N. M. Belozerova, B. N. Savenko
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/9cbf3de9ab3a4151a2e5e62c00696314
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spelling	oai:doaj.org-article:9cbf3de9ab3a4151a2e5e62c006963142021-12-02T13:50:07ZSpin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr310.1038/s41535-021-00318-52397-4648https://doaj.org/article/9cbf3de9ab3a4151a2e5e62c006963142021-03-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00318-5https://doaj.org/toc/2397-4648Abstract The two-dimensional van der Waals (vdW) magnets retaining magnetic order in atomically thin limit demonstrate challenging physical phenomena and they are considered as prospective building blocks for construction of advanced spintronics and nanoelectronics devices. Here, we present experimental evidence for negative thermal expansion of lattice volume and vdW layers and strong spin–phonon coupling effects, caused by formation of the long-range ferromagnetic order in the vdW material CrBr3. The neutron and X-ray diffraction measurements revealed anomalous temperature variation of lattice parameters and interatomic distances and angles in the vicinity of Curie temperature (T C). A pronounced rise of the frequencies of the most of the observed vibrational modes and unusual reversal broadening of their full widths at half maximum below T C was found from Raman spectroscopy measurements.D. P. KozlenkoO. N. LisS. E. KichanovE. V. LukinN. M. BelozerovaB. N. SavenkoNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-5 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 D. P. Kozlenko O. N. Lis S. E. Kichanov E. V. Lukin N. M. Belozerova B. N. Savenko Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3
description	Abstract The two-dimensional van der Waals (vdW) magnets retaining magnetic order in atomically thin limit demonstrate challenging physical phenomena and they are considered as prospective building blocks for construction of advanced spintronics and nanoelectronics devices. Here, we present experimental evidence for negative thermal expansion of lattice volume and vdW layers and strong spin–phonon coupling effects, caused by formation of the long-range ferromagnetic order in the vdW material CrBr3. The neutron and X-ray diffraction measurements revealed anomalous temperature variation of lattice parameters and interatomic distances and angles in the vicinity of Curie temperature (T C). A pronounced rise of the frequencies of the most of the observed vibrational modes and unusual reversal broadening of their full widths at half maximum below T C was found from Raman spectroscopy measurements.
format	article
author	D. P. Kozlenko O. N. Lis S. E. Kichanov E. V. Lukin N. M. Belozerova B. N. Savenko
author_facet	D. P. Kozlenko O. N. Lis S. E. Kichanov E. V. Lukin N. M. Belozerova B. N. Savenko
author_sort	D. P. Kozlenko
title	Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3
title_short	Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3
title_full	Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3
title_fullStr	Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3
title_full_unstemmed	Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3
title_sort	spin-induced negative thermal expansion and spin–phonon coupling in van der waals material crbr3
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/9cbf3de9ab3a4151a2e5e62c00696314
work_keys_str_mv	AT dpkozlenko spininducednegativethermalexpansionandspinphononcouplinginvanderwaalsmaterialcrbr3 AT onlis spininducednegativethermalexpansionandspinphononcouplinginvanderwaalsmaterialcrbr3 AT sekichanov spininducednegativethermalexpansionandspinphononcouplinginvanderwaalsmaterialcrbr3 AT evlukin spininducednegativethermalexpansionandspinphononcouplinginvanderwaalsmaterialcrbr3 AT nmbelozerova spininducednegativethermalexpansionandspinphononcouplinginvanderwaalsmaterialcrbr3 AT bnsavenko spininducednegativethermalexpansionandspinphononcouplinginvanderwaalsmaterialcrbr3
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Spin-induced negative thermal expansion and spin–phonon coupling in van der Waals material CrBr3

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