[1] Davis R F 1991 Proc. IEEE 79 702

[2] Edgar J H 1992 J. Mater. Res. 7 235

[3] Eddy J C R, Moustakas T D and Scanlon J 1993 J. Appl.
Phys. 73 448

[4] Pearsall T P, Bevk J, Feldman L C, Bonar J M, Mannaerts J P and
Ourmazd A 1987 Phys. Rev. Lett. 58 729

[5] Froyen S, Wood D M and Zunger A 1988 Phys. Rev. B 37 6893

[6] Venezuela P, Dalpian G M, Silva A J R and Fazzio A 2001
Phys. Rev. B 64 193202

[7] Schmid U, Christensen N E, Alouani M and Cardona M 1991
Phys. Rev. B 43 14597

[8] Cerdeira F, Pinczuk A and Bean J C 1984 Phys. Rev. B
31 1202

[9] Tserbak C, Polatoglou H M and Theodorou G 1993 Phys.
Rev. B 47 7104

[10] Willatzen M, Voon L C L Y, Santos P V, Cardona M, Munzar D and
Christensen N E 1995 Phys. Rev. B 52 5070

[11] Munzar D and Christensen N E 1994 Phys. Rev. B 49 11238

[12] D\'avila M E, Avila J, Asensio M C and Lay G L 2004 Phys.
Rev. B 70 241308

[13] Zhang P H, Crespi V H, Chang E, Louie S G and Cohen M L 2001
Nature 409 69

[14] Horsfield A P and Ashcroft N W 1992 J. Phys. Condens.
Matter 4 7333

[15] Johnson K A and Ashcroft N W 1996 Phys. Rev. B 54 14480

[16] Huang M C and Zhu Z Z 2001 The 4th Asian workshop on
first-principles electronic structure calculations p12

[17] Huang M C, Zhang J L, Li H P and Zhu Z Z 2002 Int. J.
Mod. Phys. B 16 4279

[18] Kresse G and Furthm\"uller J 1996 Phys. Rev. B 54
11169

[19] Kresse G and Joubert D 1999 Phys. Rev. B 59 1758

[20] Kresse G and Hafner J 1994 J. Phys: Condens. Matter
6 8245

[21] Bean J C, Sheng T T, Feldman L C, Fiory A T and Lynch R T 1984
Appl. Phys. Lett. 44 102

[22] Cerdeira F, Pinczuk A, Bean J C, Batlogg B and Wilson B A 1984
Appl. Phys. Lett. 45 1138

[23] Fiory A T, Bean J C, Feldman L C and Robinson I K 1984
J. Appl. Phys. 56 1227