ELECTRONS AND PHONONS IN THE NEW 10K SUPERCONDUCTOR CATAN2

Electron and phonon calculations are presented for the ternary CaTaN2 of trigonal alpha-NaFeO2-structure. Both density functional theory and the empirical tight-binding method are employed to yield a realistic description of electronic and vibrational properties, and also reasona ble estimates of the electron-phonon coupling. Finally possible ways t o enhance T-C are discussed.