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CE-Espresso

This is a customized version of Quantum-Espresso. It includes few changes and features that are either experimental or in conflict with the official QE code. I try to keep the code base as much as possible aligned to and compatible with the official release.

Disclaimer

No warrany, use at your own risk!

Summary of features

PW

  • March 2017: Support for restarting and computing band structure with metaGGAs (e.g. TB09, TPSS)
  • support for Rydberg pseudopotentials, having larger radial mesh and large cutoff
  • always force positive charge density
  • conv_thr_init is enforced also from the 2nd SCF iteration on
  • complete list of atoms in hubbard_l and tabd
  • Ewald parameter computed consistently in all routines
  • possibility to control what to mix: density, magnetization, Hubbard occupations, PAW projectors
  • possibility to apply an external potential, read from file
  • computation of Z2 invariants according to PRB 83, 235401 (2011), working only with NCPPs

atomic

  • possibility to generate old UPFv1 pseudopotentials
  • shift energy of individual angular momentum channels
  • in AE calculations, output the spin density on the nucleus
  • output the l-dependent pseudo-potentials

PP

  • plot the kinetic energy density $\tau$ (plot_num = 21)

Future plans

  • multi-orbital Hubbard U (will break input format)
  • generalize Z2 to ultrasoft and PAWs
  • implement projectability according to PRB 88, 165127 (2013)