The electronic and magnetic states in doped perovskite cobaltites, (La,Sr)CoO3, are studied in the numerically exact diagonalization method on Co2O11 clusters. For realistic parameter values, it is shown that a high spin state and an intermediate spin state coexist in one-hole-doped clusters due to strong p-d mixing. The magnetic states in the doped cobaltites obtained in the calculation explain various experimental results. [S0163-1829(99)06007-5].
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Mutah Univ, Dept Phys, Mutah 61710, Karak, JordanLos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Altarawneh, M. M.
Chern, G. -W.
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Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA
Los Alamos Natl Lab, CNLS, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Chern, G. -W.
Harrison, N.
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Harrison, N.
Batista, C. D.
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Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Batista, C. D.
Uchida, A.
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Uchida, A.
Jaime, M.
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Jaime, M.
Rickel, D. G.
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Rickel, D. G.
Crooker, S. A.
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Crooker, S. A.
Mielke, C. H.
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Mielke, C. H.
Betts, J. B.
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Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Betts, J. B.
Mitchell, J. F.
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Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
Mitchell, J. F.
Hoch, M. J. R.
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Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USALos Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA