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

N.B. Ivanova^a, S.G. Ovchinnikov^a, M.M. Korshunov^a, b, I.M. Eremin^b, c, N.V. Kazak^a
^aKirensky 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
^bMax-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, Dresden, D-01187, Germany
^cKazan 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 LnCo₂O_5+δ, La₂CoO₄, and Ca₃Co₂O₈, and Na_xCoO₂ · 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 Na_xCoO₂ · yH₂O also given significant attention.

PACS: 71.30.+h, 75.30.Cr, 75.50.Pp (all)
DOI: 10.3367/UFNe.0179.200908b.0837
URL: https://ufn.ru/en/articles/2009/8/b/
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000273727200002
Scopus

2-s2.0-70749152483
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2009PhyU...52..789I
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)

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TY JOUR
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
UR https://ufn.ru/en/articles/2009/8/b/
ER https://doi.org/10.3367/UFNe.0179.200908b.0837

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