Re: [Wien] An interesting article on DFT: Understanding density functional theory (DFT) and completing it in practice

2016-12-08 Thread Sam Trickey
Be very careful with this article. The method it presents purports to give a correct set of DFT results - both total energy and band gap - with a prescription for constructing a finite-sized basis set. The explicit contradiction with the concept of the complete basis set limit should be cause

Re: [Wien] Augmented Plane Wave

2019-03-22 Thread Sam Trickey
Rarely do I contribute to this list, though I benefit from reading it. I must respectfully contradict Martin.  Professor Slater clearly intended that the augmentation be of the plane wave.  The history, at least as I know it, is this. Professor Slater did not use the word "augment" or

Re: [Wien] gfortran compilation and run problems for 19.1

2019-06-25 Thread Sam Trickey
See below On 6/25/19 5:47 AM, Peter Blaha wrote: Hi, I can confirm the fix for   inputpars.F.   Of course, according to fortran standards a logical if should have an .eqv. operator (although I never "understood" what that should be good for ...). Keeps computer scientists occupied

Re: [Wien] core-hole calculation in a molecule

2019-06-19 Thread Sam Trickey
Good morning -   Maybe I can give a little help.   I never tried a core-electron binding energy.  Long ago, with the old Univ. Florida APW (NOT LAPW!) code, Asok Ray, Joe Worth, and I did try the Slater transition state for optical transitions in rare gas crystals.  We implemented it in a

Re: [Wien] temperature dependent DFT (band, ...) calculations

2020-04-18 Thread Sam Trickey
Regarding the question of temperature effects, let me add some remarks about electronic temperature. Under diverse circumstances (e.g. laser heating) it is possible for the electrons and phonons to have very different temperatures for experimentally meaningfully long times.   Of course it also