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Spin Dynamics and Ground State of the Frustrated Diamond Lattice Magnet CoAl<inf>2</inf>O<inf>4</inf> as seen by <sup>27</sup>Al NMR

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dc.contributor.author Iakovleva M.
dc.contributor.author Vavilova E.
dc.contributor.author Grafe H.
dc.contributor.author Maljuk A.
dc.contributor.author Wurmehl S.
dc.contributor.author Büchner B.
dc.contributor.author Kataev V.
dc.date.accessioned 2018-09-19T20:41:00Z
dc.date.available 2018-09-19T20:41:00Z
dc.date.issued 2016
dc.identifier.issn 0937-9347
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/143130
dc.description.abstract © 2016 Springer-Verlag WienWe report an experimental study of the low-temperature dynamics of electron spin fluctuations in the magnetically frustrated spinel CoAl2O4 as revealed by 27Al nuclear magnetic relaxation measurements in a magnetic field of 7.7 T in the temperature range 4 < T < 240 K. With this local probe technique, we show that the dynamics of the correlated Co spins strongly depends on the frustration of spin interactions and on Co/Al site disorder. The anisotropy of the temperature dependences of the spin–lattice (T1−1) and spin–spin (T2−1) 27Al nuclear relaxation rates reveals a coexistence of the short-range Néel order below a characteristic temperature T* = 8 K and slow non-commensurate magnetic correlations below and above T*, in agreement with the results of neutron diffraction experiments and our previous NMR spectroscopy data.
dc.relation.ispartofseries Applied Magnetic Resonance
dc.title Spin Dynamics and Ground State of the Frustrated Diamond Lattice Magnet CoAl<inf>2</inf>O<inf>4</inf> as seen by <sup>27</sup>Al NMR
dc.type Article in Press
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 1
dc.source.id SCOPUS09379347-2016-SID84964058332


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  • Публикации сотрудников КФУ Scopus [17617]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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