We present a full potential, all electron augmented plane wave (APW) implementation of first-principles calculations of NMR chemical shifts. In order to obtain the induced current we follow a perturbation approach [Pickard and Mauri, Phys. Rev. B 63, 245101 (2001)] and extended the common APW + local orbital (LO) basis by several LOs at higher energies. The calculated all-electron current is re...

in order to study some theories about nonsuperconductivity of prba2cu3o7, based on the density functional theory and with apw+lo/lapw method some calculations for prba2cu3o7 (pr123) and yba2cu3o7 (y123) were performed. the lsda+u approximation was used for pr(4f) orbitals and the effect of changing upr on the band structure, pr(4f)-dos, distribution of electrons on the planes and chains, and pr...

Atomic forces formulation based on the Dirac-Kohn-Sham equation and flexible (APW+lo/LAPW)+LO basis set is presented. The was implemented in code FlapwMBPT allows a user to easily switch between different functions of augmentation type (APW or LAPW) kind local orbitals. Similar work (Phys.Rev.B 91 (2015) 035105), implementation takes into account small discontinuities wave functions, density, p...

The results of ab-initio calculations of electronic structure of Laves-phase compounds Al2Ca, Be2Ag and Be2Ti are presented. Calculations were carried out in the framework of Density Functional Theory (DFT) and the Full Potential Linearized Augmented Plane Waves + local orbital formalism (FP APW+lo). Total, local and partial densities of electronic states (DOS) were obtained and analysed. These...

Article history: Received 8 April 2008 Received in revised form 14 May 2008 Accepted 27 June 2008 Available online 5 July 2008 PACS: 61.50.-f 71.15.Mb 71.27.+a