[1] Oagle S B 2005 Thin Films and Heterostructures for
Oxide Electronics (New York: Springer)

[2] Deng L W, Zhao J J, Ji G F, Gong Z Z and Wei D Q 2006
Chin. Phys. Lett. 23 2334

[3] Wu Z M, Wang X Q and Wang F W 2007 Chin. Phys. Lett.
24 3249

[4] Toquin R Le, Paulus W, Cousson A, Prestipino C and
Lamberti C 2006 J. Am. Chem. Soc. 128 13161

[5] Shao Z P and Haile S M 2004 Nature 431 170

[6] Paulus W, Heger G, Rudolf P and Schollhorn R 1994
Physica C 235 861

[7] Nemudry A, Rudolf P and Schollhorn R 1996 Chem.
Mater. 8 2232

[8] Satpathy S, Popovic Z S and Vukajlovic F R 1996 Phys.
Rev. Lett. 76 960

[9] Sarma D D, Shanthi N, Barman S R, Hamada N, Sawada H and
Terakura K 1995 Phys. Rev. Lett. 75 1126

[10] Pickett W E and Singh D J 1996 Phys. Rev. B
53 1146

[11] Korotin M A, Ezhov S Yu, Solovyev I V, Anisimov V I,
Khomskii D I and Sawatzky G A 1996 Phys. Rev. B 54 5309

[12] Anisimov V I, Zaanen J and Andersen O K 1991 Phys.
Rev. B 44 943

[13] Czyzyk M T and Sawatzky G A 1994 Phys. Rev. B
49 14211

[14] Solovyev I, Hamada N and Terakura K 1996 Phys. Rev.
B 53 7158

[15] Yang Z Q, Huang Z, Ye L and Xie X D 1999 Phys. Rev.
B 60 15674

[16] Wan X G, Weng H M and Dong J M 2002 Chin. Phys.
Lett. 19 1522

[17] Kresse G and Hafner J 1993 Phys. Rev. B 47
558(R) Kresse G and Hafner J 1994 Phys. Rev. B 49 14251

[18] Bl\"{ochl P E 1994 Phys. Rev. B 50 17953
The valence configurations are chosen as $4s24p65s2$ for Sr atoms,
$4s13d8$ for Co atoms, and $2s22p4$ for O atoms.

[19] Jaya S M and Jagadish R 1991 Phys. Rev. B 43
13274

[20] Takeda T, Watanabe T, Komura S and Fujii H 1987 J.
Phys. Soc. Jpn. 56 731

[21] Watanabe H 1957 J. Phys. Soc. Jpn. 12 515

[22] Takeda T, Yamaguchi Y and Watanabe H 1972 J. Phys.
Soc. Jpn. 33 970

[23] Anderson P W 1959 Phys. Rev. 115 2

[24] Asamitsu A, Moritomo Y, Tomioka Y, Arima T and Tokura Y
1995 Nature 373 407

[25] Takeda T and Watanabe H 1972 J. Phys. Soc. Jpn.
33 973

[26] Asokamani R, Iyakutti K, Rao R S and Devanatan V 1978
J. Phys. F 11 2323