I am sorry my answer can be misleading. The wave function and the density also depend on the environment, but the point is that PP does not recompute them, it just reads them from the saved wfc files and plot them. PP instead needs to recompute the potentials to plot them and this is where the missing environ makes the results meaningless.
I hope this helps, Best, Oliviero On Jul 21, 2020, at 10:47 AM, Andreussi, Oliviero <[email protected]<mailto:[email protected]>> wrote: Dear Antonio, Thanks for reporting this issue and for trying Environ for your simulations. I am afraid the documentation of Environ needs to be improved on the point that you report, as this is not the first time I see this question. Environ is not coupled with the PP code. If PP is used to plot quantities that do not depend on the environment, such as the wavefunction, the density, etc., it should work fine. However, you cannot use PP to plot quantities that depend on the environment, namely the electrostatic potential. For this purpose, you can turn on the verbosity of Environ using the verbose keyword. If you set verbose = 2 (or higher) you should get some .cube files that you can use to visualize properties of the simulation cell, in particular the electrostatic potential. Cubefiles are read by many programs and can be processed relatively easily with scripts. Don’t hesitate to let me know if you have any problem with running Environ. You may also consider joining the google group created to support Environ users, there are not too many discussions right now, but it would be nice to build a collection of known problems, solutions and suggestions. quantum-environ-users<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgroups.google.com%2Fforum%2F%3Fhl%3Den%23!forum%2Fquantum-environ-users&data=02%7C01%7Coliviero.andreussi%40unt.edu%7C3c06ec5dcb694d44a47808d82d8d85ee%7C70de199207c6480fa318a1afcba03983%7C0%7C0%7C637309433157998728&sdata=XZ0wiRMNB71T%2BZ%2BGqBqVIuVJb4gQ2FQwBgnJs%2BjgaFA%3D&reserved=0> (https://groups.google.com/forum/?hl=en#!forum/quantum-environ-users<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgroups.google.com%2Fforum%2F%3Fhl%3Den%23!forum%2Fquantum-environ-users&data=02%7C01%7Coliviero.andreussi%40unt.edu%7C3c06ec5dcb694d44a47808d82d8d85ee%7C70de199207c6480fa318a1afcba03983%7C0%7C0%7C637309433158008722&sdata=cn52WZgU%2BEWZkyjMU8ME5kN736PZnAQoLlJNuEwBtL0%3D&reserved=0>) Best, Oliviero Oliviero Andreussi -- Assistant Professor Department of Physics University of North Texas Email: [email protected]<mailto:[email protected]> Phone: +1-(940)-369-5316 Skype: olivieroandreussi Web: https://www.materialab.org<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.materialab.org%2F&data=02%7C01%7Coliviero.andreussi%40unt.edu%7C3c06ec5dcb694d44a47808d82d8d85ee%7C70de199207c6480fa318a1afcba03983%7C0%7C0%7C637309433158008722&sdata=TbEgT4wmLNXGl3RrC1P9HyKsFrr4dVz8NZa%2BwB1CIMQ%3D&reserved=0> On Jul 21, 2020, at 8:42 AM, Antonio Crepaldi <[email protected]<mailto:[email protected]>> wrote: Dear QE users and developers, I'm currently trying to simulate a charged 2D slab embedded in water. I'm using two planar countercharges as explained in Example 5 of Environ. The computation does not have any convergence problem, however, when I plot the total electrostatic potential (plot_num=11 in pp.x) I do not get a flat potential in the vacuum region screened by the countercharges. I would expect to find a flat potential in that region and be able to use it as a reference for further calculations. Here is my environ input &ENVIRON verbose = 0 environ_thr = 1.d0 environ_type = 'input' env_electrostatic = .true. env_static_permittivity = 80 env_surface_tension = 0.D0 env_pressure = 0.D0 env_external_charges = 2 / &BOUNDARY solvent_mode = 'full' / &ELECTROSTATIC pbc_correction = 'parabolic' pbc_dim = 2 pbc_axis = 3 tol = 5.D-13 !inner_tol = 5.D-18 / EXTERNAL_CHARGES (bohr) 2. 0.0 0.0 -14.29 1.0 2 3 2. 0.0 0.0 14.29 1.0 2 3 Thank you very much for your help. 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