Author Topic: MGGA and DFT-U  (Read 3281 times)

0 Members and 1 Guest are viewing this topic.

Offline berna

  • Heavy QuantumATK user
  • ***
  • Posts: 56
  • Country: tr
  • Reputation: 0
    • View Profile
MGGA and DFT-U
« on: March 24, 2017, 09:50 »
Hi, why does not DFT-U include MGGA (MGGA-U)?

Offline Jess Wellendorff

  • QuantumATK Staff
  • Supreme QuantumATK Wizard
  • *****
  • Posts: 933
  • Country: dk
  • Reputation: 29
    • View Profile
Re: MGGA and DFT-U
« Reply #1 on: March 24, 2017, 12:33 »
That would not be a well-established method and has not been implemented.

Offline Petr Khomyakov

  • QuantumATK Staff
  • Supreme QuantumATK Wizard
  • *****
  • Posts: 1290
  • Country: dk
  • Reputation: 25
    • View Profile
Re: MGGA and DFT-U
« Reply #2 on: March 24, 2017, 15:46 »
In addition, MGGA and GGA+U are both meant to get more accurate band gap and band widths for semiconductor materials. I think it would not make sense to mix the two approaches, unless there is a good argument for doing so.