Reviews of topical problems

Specific features of spin, charge, and orbital ordering in cobaltites

 a,  a,  a, b,  b, c,  a
a Kirensky Institute of Physics, Federal Research Center Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Academgorodok 50, str. 38, Krasnoyarsk, 660036, Russian Federation
b Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, Dresden, D-01187, Germany
c Kazan State University, ul. Lenina 18, Kazan, 420008, Russian Federation

Complex cobalt oxides known as cobaltites are reviewed, including LnCoO3-based perovskite-structured rare-earth cobaltites (where Ln is lanthanum or a lanthanide), quasi-two-dimensional and quasi-one-dimensional cobaltites of the types LnCo2O5+δ, La2CoO4, and Ca3Co2O8, and NaxCoO2 · yH2O superconducting compounds. Key experimental and theoretical results are presented, with emphasis on the interplay between charge, spin, and orbital degrees of freedom. Two problems of specific relevance to cobaltites — the spin state instability of Co3+ ions in LnCoO3, and the nature of superconductivity in NaxCoO2 · yH2O also given significant attention.

Fulltext is available at IOP
PACS: 71.30.+h, 75.30.Cr, 75.50.Pp (all)
DOI: 10.3367/UFNe.0179.200908b.0837
Citation: Ivanova N B, Ovchinnikov S G, Korshunov M M, Eremin I M, Kazak N V "Specific features of spin, charge, and orbital ordering in cobaltites" Phys. Usp. 52 789–810 (2009)
BibTexBibNote ® (generic) BibNote ® (RIS)MedlineRefWorks
TI Specific features of spin, charge, and orbital ordering in cobaltites
AU Ivanova, N. B.
AU Ovchinnikov, S. G.
AU Korshunov, M. M.
AU Eremin, I. M.
AU Kazak, N. V.
PB Physics-Uspekhi
PY 2009
JO Physics-Uspekhi
JF Physics-Uspekhi
JA Phys. Usp.
VL 52
IS 8
SP 789-810

Оригинал: Иванова Н Б, Овчинников С Г, Коршунов М М, Ерёмин И М, Казак Н В «Особенности спинового, зарядового и орбитального упорядочений в кобальтитах» УФН 179 837–860 (2009); DOI: 10.3367/UFNr.0179.200908b.0837

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