Release note

New features

  • Metadynamics simulation
  • Geometry optimization with Quick-min or FIRE method
  • LSQ method for accelerating SCC convergence
  • Interruption and restarting numerical Hessian calculation
  • Numerical gradient calculation
  • Treating extended Slater-Koster parameters and f-electrons
  • DFTB+U approach for SCC calculation
  • Onsite correction for SCC calculation
  • D3H5 correction for F element
  • MPI-based Broyden charge mixing for reducing memory usage
  • Better efficiency of orbitally resolved SCC calculation
  • Spline interpolation algorithm for orbitally resolved SCC calculation

Changed default setting

  • Threshold for scaling velocities in constant temperature MD simulation
    Old: 100 K  New: 10000 K
  • Step size for numerical differentiation of DFTB parameterized integrals to obtain first and second derivatives
    Old: Fixed (0.01 atomic unit) New: Adjustable parameter
  • Step size for numerical differentiation of D3 gradient to obtain second derivatives
    Old: Fixed (0.0001 atomic unit) New: A djustable parameter
  • Reference Hubbard value to identify hydrogen in damped γ-function
    Old: Fixed (0.4195 atomic unit) New: A djustable parameter
  • No use of disk I/O for storing some intermediate data

Bug fixed

  • DFTB3 atom resolved energy
  • Zero charge guess for open-shell system
  • Hubbard derivative parameter check in orbitally resolved SCC calculation