Theoretical Investigation of GaN

U. S. Sharma, P.S. Bisht and U. P. Verma, J. Phys. Cond. Matt. 21 (2009) 025501. C. Stampfl and C. G. Van de Walle, Phys. Rev. B 59 (1999) 5521. P. Rinke, M. Winke lnkemper, A. Qteish, D. Bimberg, J. Neugebauer, and M. Schefler, Phys. Rev. B 7 (2008) 075202. A. Beloufa, Z. Bensaad, B. Soudini, N. Sekkal, A. Bensaad and H. Abid, Int. J. Nanoelectr. Mat. 1 (2009) 11. A. ferreire de Silva, N. Souza Dantas, J.S. de Almeida, R. Ahuja and C. Person, J. Cryst. Grow. 281 (2005) 151. J. Cai and N. Chen, Phys. Rev. B 75 (2007) 134109. M. Fuchs, J.L. Da Silva, C. Stampfl, J. Neugebauer and M. Scheffler, Phys.Rev. B 65 (2002) 245212. X. Chen, Y. Lan, J. Liang, X. Cheng, Y. Xu, T. Xu, P. Jiang and K. Lu, Chin. Phys. Lett.16(1999)107. V.I. Koshchenko, A.F. Demidenko, L.D. Sabanova, V.E. Yachmenev, Y.M. Gran and A.F. Radchenko, Izv. Akad. Nauk SSSR, Neorg. Mater 15 (1979) 1686. J. Leitner, A. Strejc, D. Sedmidubský and K. Ružicka ,Therm. Act. 401 (2003) 169. X. Suna, Q. Chenb, Y. Chua and C. Wang, Phys. B: Cond. Mat. 368 (2005) 243. I. Vurgaftman , J.R. Meyer and L. R. Ram-Mohan, J. App. Phy. 89 (2001)5815. J. Serrano, A. Rubio, E. Hernandez, A. Munoz, and A. Mujica, Phys. Rev B 62 (2000) 16612. P. Hohenberg and W. Kohn, Phys. Rev. 136 (1964) B864. W. Kohn and L.S. Sham, Phys. Rev. 140 (1965) A1133. J.P. Perdew and Y. Wang, Phys. Rev. B 45 (1992) 13244. S.Y. Savrasov, Phys. Rev. B 54 (1996) 16470. http://www.physics.ucdavis.edu/∼mindlab/. F.D. Murnaghan, Proc. Natl. Acad. Sci. USA 30 (1944) 5390. M.A. Blanco, E. Francisco and V. Luaña, Comput. Phy. Com. 158 (2004) 57. M.A. Blanco, A. Martín Pendás, E. Francisco, J. M Recio and R. Franco, J. Molec. Struct. Theochem. 368 (1996) 245. M. Flórez, J.M. Recio, E. Francisco, M.A. Blanco and A. Martín Pendás, Phys. Rev. B 66 (2002) 144112. E. Francisco, J.M. Recio, M.A. Blanco and A. Martín Pendás, J. Phys. Chem.102 (1998) 1595. E. Francisco, M.A. Blanco and G. Sanjurjo, Phys. Rev. B 63 (2001) 094107. R. Hill, Proc. Phys. Soc. Lond. A 65 (1952) 349. M. Ueno, M. Yoshida and A. Onodera, Phys. Rev. B 49 (1994). O. Arbouche, B. Belgoumène, B. Soudini and M. Driz , Comp. Mat. Sc. 47 (2009) 432. K. Kim, W.R. L. Lambrecht and B. Segall, Phys. Rev. B 53 (1996) 16310. S. Berrah, A. Boukort and H. Abid, Phy. Scr. 75 (2007) 414. H. Xia, Q. Xia and A.L. Ruoff, Phys. Rev. B 47 (1993) 12925. M.P. Halshal, P. Harmer, P.J. Parbrook and S.J. Henley, Phys. Rev. B 69 (2004) 235207.