"K. Toyoura,Y. Koyama,A. Kuwabara,F. Oba,I. Tanaka","First-principles approach to chemical diffusion of lithium atoms in a graphite intercalation compound",,"Physical Review B",,"vol. 78",,"pp. 214303",2008,Dec. "Atsushi Togo,Fumiyasu Oba,Isao Tanaka","First-principles calculations of the ferroelastic transition between rutile-type and CaCl2-type SiO2 at high pressures",,"Physical Review B",,"vol. 78",,"pp. 134106",2008,Oct. "M. Choi,F. Oba,I. Tanaka","First-principles study of native defects and lanthanum impurities in NaTaO3",,"PHYSICAL REVIEW B",,"vol. 78",,"pp. 014115",2008,July "F. Oba,A. Togo,I. Tanaka,J. Paier,G. Kresse","Defect energetics in ZnO: A hybrid Hartree-Fock density functional study",,"PHYSICAL REVIEW B",,"vol. 77",,"pp. 245202",2008,June "A. Togo,F. Oba,I. Tanaka","Transition pathway of CO2 crystals under high pressures",,"PHYSICAL REVIEW B",,"vol. 77",,"pp. 184101",2008,May "Y. Kumagai,H. Ikeno,F. Oba,K. Matsunaga,I. Tanaka","Effects of crystal structure on Co-L2,3 x-ray absorption near-edge structure and electron-energy-loss near-edge structure of trivalent cobalt oxides",,"PHYSICAL REVIEW B",,"vol. 77",,"pp. 155124",2008,Apr. "K. Yuge,A. Seko,Y. Koyama,F. Oba,I. Tanaka","First-principles-based phase diagram of the cubic BNC ternary system",,"Physical Review B",,"vol. 77",,"pp. 094121-1-8",2008,Mar. "Atsuto Seko,Atsushi Togo,Fumiyasu Oba,Isao Tanaka","Structure and stability of homologous series of tin oxides",,"PHYSICAL REVIEW LETTERS",,"vol. 100",,"pp. 045702",2008,Jan. "I. Tanaka,Fumiyasu Oba","First principles calculations for modern ceramic science and engineering",,"Journal of Physics: Condensed Matter",,"vol. 20",,"pp. 064215-1-6",2008,Jan.