Abstract
The linear muffin-tin orbital method in the local density approximation (LDA + U) explicitly considering Coulomb correlations has been applied to calculate the electronic structure, magnetic moments, and parameters of the Heisenberg exchange interaction for cobalt ions in BaCoS2. Five solutions close in total energy with various orbital ordering of Co2+ ions and almost identical spin magnetic moments μ = 2.32μB of the Co2+ ion 3d-shell have been found. The BaCoS2 ground state can be considered as a set of energy-degenerate orbital-ordered configurations of Co2+ ions in the high-spin state.
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L. S. Martinson, J. W. Schweitzer, and N. C. Baenzinger, Phys. Rev. B: Condens. Matter 54, 11265 (1996).
I. E. Grey and H. Steinfink, J. Am. Chem. Soc. 92, 5093 (1970).
K. Takenaka, S. Kashima, A. Osuka, S. Sugai, Y. Yasui, S. Shamoto, and M. Sato, Phys. Rev. B: Condens. Matter 63, 115113 (2001).
B. Fisher, J. Genossar, L. Patlagan, G. M. Reisner, and A. Knizhnik, Phys. Rev. B: Condens. Matter 59, 8745 (1999).
D. Mandrus, J. L. Sarro, B. C. Chakoumakos, J. A. Fernandez-Baca, S. E. Nagle, and B. C. Sales, J. Appl. Phys. 81, 4620 (1997).
G. J. Snyder, M. C. Gelabert, and F. J. DiSalvo, J. Solid State Chem. 113, 355 (1994).
L. F. Mattheiss, Solid State Commun. 93, 879 (1995).
I. Hase, N. Shirakawa, and Y. Nishihara, J. Phys. Soc. Jpn. 64, 2533 (1995).
S. R. Krishnakumar, T. Saha-Dasgupta, N. Shanthi, P. Mahadevan, and D. D. Sarma, Phys. Rev. B: Condens. Matter 63, 045111 (2001).
V. I. Anisimov, F. Aryasetiawan, and A. I. Lichtenstein, J. Phys.: Condens. Matter 9, 767 (1997).
L. S. Martinson, J. W. Schweitzer, and N. C. Baenziger, Phys. Rev. Lett. 71, 125 (1993).
O. K. Andersen, Z. Pawlowska, and O. Jepsen, Phys. Rev. B: Condens. Matter 34, 5253 (1986).
N. C. Baenziger, L. Grout, L. S. Martinson, and J. W. Schweitze, Acta Crystallogr., Sect. C: Cryst. Struct. Commun. 50, 1375 (1994).
U. von Barth and L. Hedin, J. Phys. C: Solid State Phys. 5, 1629 (1972).
W. E. Pickett, S. C. Erwin, and E. C. Ethridge, Phys. Rev. B: Condens. Matter 58, 1201 (1998).
A. I. Liechtenstein, M. I. Katsnelson, V. P. Antropov, and A. V. Gubanov, J. Magn. Magn. Mater. 67, 65 (1987).
J. Zaanen, G. A. Sawatzky, and J. W. Allen, Phys. Rev. Lett. 55, 418 (1985).
J. W. Schweitzer, Phys. Rev. B: Condens. Matter 73, 104426 (2006).
K. Kodama, S. Shamoto, H. Harashina, J. Takeda, M. Sato, K. Kakurai, and M. Nishi, J. Phys. Soc. Jpn. 65, 1782 (1996).
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Original Russian Text © V.M. Zainullina, M.A. Korotin, 2011, published in Fizika Tverdogo Tela, 2011, Vol. 53, No. 5, pp. 919–925.
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Zainullina, V.M., Korotin, M.A. Ground state of BaCoS2 as a set of energy-degenerate orbital-ordered configurations of Co2+ ions. Phys. Solid State 53, 978–984 (2011). https://doi.org/10.1134/S1063783411050325
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DOI: https://doi.org/10.1134/S1063783411050325