X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I
The curreThe current status of theoretical understanding of the x-ray magnetic circular dichroism (XMCD) of 4 f
 and 5 f compounds is reviewed. Energy band theory based upon the local spin-density approximation
 (LSDA) describes the XMCD spectra of transition metal compounds with hig...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2008 |
| Автори: | , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2008
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I / V.N. Antonov, A.P. Shpak, A.N. Yaresko // Физика низких температур. — 2008. — Т. 34, № 2. — С. 107–147. — Бібліогр.: 198 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862559937464369152 |
|---|---|
| author | Antonov, V.N. Shpak, A.P. Yaresko, A.N. |
| author_facet | Antonov, V.N. Shpak, A.P. Yaresko, A.N. |
| citation_txt | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I / V.N. Antonov, A.P. Shpak, A.N. Yaresko // Физика низких температур. — 2008. — Т. 34, № 2. — С. 107–147. — Бібліогр.: 198 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The curreThe current status of theoretical understanding of the x-ray magnetic circular dichroism (XMCD) of 4 f
and 5 f compounds is reviewed. Energy band theory based upon the local spin-density approximation
(LSDA) describes the XMCD spectra of transition metal compounds with high accuracy. However, the
LSDA does not suffice for lanthanide compounds which have a correlated 4 f shell. A satisfactory description
of the XMCD spectra could be obtained by using a generalization of the LSDA, in which explicitly f
electron Coulomb correlation are taken into account (LSDA + U approach). As examples of this group we
consider GdN compound. We also consider uranium 5 f compounds. In those compounds where the 5 f electrons
are rather delocalized, the LSDA describes the XMCD spectra reasonably well. As example of this
group we consider UFe₂. Particular differences occur for the uranium compounds where the 5 f electrons are
neither delocalized nor localized, but more or less semilocalized. Typical examples are UXAl (X = Co, Rh,
and Pt), and UX (X = S, Se, Te). The semilocalized 5 f ’s are, however, not inert, but their interaction with
conduction electrons plays an important role. We also consider the electronic structure and XMCD spectra
of heavy-fermion compounds UPt₃, URu₂Si₂, UPd₂Al3₃, UNi₂Al₃, and UBe₁₃ where the degree of the 5 f localization
is increased in comparison with other uranium compounds. The electronic structure and XMCD
spectra of UGe₂ which possesses simultaneously ferromagnetism and superconductivity also presented. Recently
achieved improvements for describing 5 f compounds are discussed.
|
| first_indexed | 2025-11-25T22:54:33Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-116810 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-25T22:54:33Z |
| publishDate | 2008 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Antonov, V.N. Shpak, A.P. Yaresko, A.N. 2017-05-16T13:44:38Z 2017-05-16T13:44:38Z 2008 X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I / V.N. Antonov, A.P. Shpak, A.N. Yaresko // Физика низких температур. — 2008. — Т. 34, № 2. — С. 107–147. — Бібліогр.: 198 назв. — англ. 0132-6414 PACS: 75.50.Cc; 71.20.Lp; 71.15.Rf https://nasplib.isofts.kiev.ua/handle/123456789/116810 The curreThe current status of theoretical understanding of the x-ray magnetic circular dichroism (XMCD) of 4 f
 and 5 f compounds is reviewed. Energy band theory based upon the local spin-density approximation
 (LSDA) describes the XMCD spectra of transition metal compounds with high accuracy. However, the
 LSDA does not suffice for lanthanide compounds which have a correlated 4 f shell. A satisfactory description
 of the XMCD spectra could be obtained by using a generalization of the LSDA, in which explicitly f
 electron Coulomb correlation are taken into account (LSDA + U approach). As examples of this group we
 consider GdN compound. We also consider uranium 5 f compounds. In those compounds where the 5 f electrons
 are rather delocalized, the LSDA describes the XMCD spectra reasonably well. As example of this
 group we consider UFe₂. Particular differences occur for the uranium compounds where the 5 f electrons are
 neither delocalized nor localized, but more or less semilocalized. Typical examples are UXAl (X = Co, Rh,
 and Pt), and UX (X = S, Se, Te). The semilocalized 5 f ’s are, however, not inert, but their interaction with
 conduction electrons plays an important role. We also consider the electronic structure and XMCD spectra
 of heavy-fermion compounds UPt₃, URu₂Si₂, UPd₂Al3₃, UNi₂Al₃, and UBe₁₃ where the degree of the 5 f localization
 is increased in comparison with other uranium compounds. The electronic structure and XMCD
 spectra of UGe₂ which possesses simultaneously ferromagnetism and superconductivity also presented. Recently
 achieved improvements for describing 5 f compounds are discussed. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Обзоp X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I Article published earlier |
| spellingShingle | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I Antonov, V.N. Shpak, A.P. Yaresko, A.N. Обзоp |
| title | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I |
| title_full | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I |
| title_fullStr | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I |
| title_full_unstemmed | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I |
| title_short | X-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. Part I |
| title_sort | x-ray magnetic circular dichroism in d and f ferromagnetic materials: recent theoretical progress. part i |
| topic | Обзоp |
| topic_facet | Обзоp |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/116810 |
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