Magnetic-field-induced effects in the electronic structure of itinerant d- and f-metal systems
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
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Magnetic-field-induced effects in the electronic structure of itinerant d- and f-metal systems
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| Creator |
Grechnev, G.E.
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Электронные свойства проводящих систем
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| Description |
A paramagnetic response of transition metals and itinerant d- and f -metal compounds in an external magnetic field is studied by employing ab initio full-potential LMTO method in the framework of the local spin density approximation. Within this method the anisotropy of magnetic susceptibility in hexagonal close-packed transition metals is evaluated for the first time. This anisotropy is owing to the orbital Van Vleck-like paramagnetic susceptibility, which is revealed to be substantial in transition metal systems due to hybridization effects in electronic structure. It is demonstrated, that compounds TiCo, Ni₃Al, YCo₂, CeCo₂, YNi₅, LaNi₅ and CeNi₅ are strong paramagnets close to the quantum critical point. For these systems the Stoner approximation underestimates the spin susceptibility, whereas the calculated field-induced spin moments provided a good description of the large paramagnetic susceptibilities and magnetovolume effects. It is revealed, that itinerant description of hybridized f electrons produces magnetic properties of CeCo₂, CeNi₅, UAl₃, UGa₃, USi₃ and UGe₃ compounds in close agreement with experiment. In the uranium UX₃ compounds the strong spin–orbit coupling together with hybridization effects give rise to peculiar magnetic states, where the field-induced spin moments are antiparallel to the external field and the magnetic response is dominated by the orbital contribution.
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| Date |
2017-05-22T15:20:35Z
2017-05-22T15:20:35Z 2009 |
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Article
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| Identifier |
Magnetic-field-induced effects in the electronic structure of itinerant d- and f-metal systems / G.E. Grechnev // Физика низких температур. — 2009. — Т. 35, № 8-9. — С. 812-828. — Бібліогр.: 63 назв. — англ.
0132-6414 PACS: 71.20.–b, 71.20.Be, 75.10.Lp http://dspace.nbuv.gov.ua/handle/123456789/117352 |
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en
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| Relation |
Физика низких температур
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| Publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
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