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On low-dimensional models at NMR line shape analysis in nanomaterial systems
Автор | Kucherov, Mm | |
Автор | Falaleev, Ov | |
Дата внесения | 2019-07-01T07:21:37Z | |
Дата, когда ресурс стал доступен | 2019-07-01T07:21:37Z | |
Дата публикации | 2018-04 | |
Библиографическое описание | Kucherov, Mm. On low-dimensional models at NMR line shape analysis in nanomaterial systems [Текст] / Mm Kucherov, Ov Falaleev // Journal of Physics: Conference Series: 987. — 2018. — С. 012043 | |
ISSN | 17426588 | |
URI (для ссылок/цитирований) | http://iopscience.iop.org/article/10.1088/1742-6596/987/1/012043/pdf | |
URI (для ссылок/цитирований) | https://elib.sfu-kras.ru/handle/2311/110476 | |
Аннотация | We present a model of localized spin dynamics at room temperature for the low-dimensional solid-state spin system, which contains small ensembles of magnetic nuclei (N ~ 40). The standard spin Hamiltonian (XXZ model) is the sum of the Zeeman term in a strong external magnetic field and the magnetic dipole interaction secular term. The 19F spins in a single crystal of fluorapatite [Ca5(PO4)3F] have often been used to approximate a one-dimensional spin system. If the constant external field is parallel to the c axis, the 3D 19F system may be treated as a collection of many identical spin chains. When considering the longitudinal part of the secular term, we suggest that transverse component of a spin in a certain site rotates in a constant local magnetic field. This field changes if the spin jumps to another site. On return, this spin continues to rotate in the former field. Then we expand the density matrix in a set of eigenoperators of the Zeeman Hamiltonian. A system of coupled differential equations for the expansion coefficients then solved by straightforward numerical methods, and the fluorine NMR line shapes of fluorapatite for different chain lengths are calculated. | |
Тема | low-dimentional spin system | |
Тема | spin dynamics | |
Тема | correlation functions | |
Тема | free induction decay | |
Тема | NMR line shape | |
Название | On low-dimensional models at NMR line shape analysis in nanomaterial systems | |
Тип | Journal Article | |
Тип | Journal Article Preprint | |
Страницы | 012043 | |
ГРНТИ | 29.19.22 | |
Дата обновления | 2019-07-01T07:21:37Z | |
DOI | 10.1088/1742-6596/987/1/012043 | |
Институт | Институт космических и информационных технологий | |
Подразделение | Кафедра прикладной математики и компьютерной безопасности | |
Журнал | Journal of Physics: Conference Series | |
Квартиль журнала в Scopus | Q3 | |
Квартиль журнала в Web of Science | без квартиля |