SOF-7063: split into sections, add screenshots

lang/en/docs/tutorials/dft/electronic/hubbard.json

@@ -149,5 +149,5 @@
             "endTime": "00:01:31.000"
         }
     ],
-    "youTubeId": "Uh9OWJHKlQY"
+    "youTubeId": "33PykNO8QlQ"
 }

lang/en/docs/tutorials/dft/electronic/hubbard.md

@@ -1,44 +1,91 @@
 # DFT+U and Hubbard parameter calculation in Quantum Espresso
 
 In this tutorial we demonstrate how to perform DFT+U calculation, followed by
-calculation of Hubbard parameter using Quantum Espresso simulation engine on our
-web platform.
+calculation of Hubbard parameter using Quantum Espresso on our web platform.
+
+
+### Create DFT+U workflow
+
+First, we need to create PWscf workflow with DFT+U enabled. A PWscf calculation
+(using `pw.x`) is prerequisite for Hubbard parameter (using `hp.x`) calculation.
+
+- Navigate to workflows page from the sidebar, and create new workflow. Expand
+details section and select Quantum Espresso version `7.2` from the drop-down.
+
+![Navigation sidebar](/images/tutorials/hubbard/hubbard-01-navigation-sidebar.webp "Navigation sidebar")
+
+![Select application version and build](/images/tutorials/hubbard/hubbard-02-select-ver-build.webp "Select application version and build")
+
+- Click **Edit** button on the default **pw_scf** workflow unit. Expand details
+pane in the unit modal, and select **pw_scf_dft_u** flavor/ template. Close the
+unit modal.
+
+![Select executable and flavor](/images/tutorials/hubbard/hubbard-03-select-executable-flavor.webp "Select executable and flavor")
 
 !!!warning
-    Here we will follow the latest DFT+U syntax and method introduced in Quantum
+    Here we follow the latest DFT+U syntax and method introduced in Quantum
     Espresso version `7.1`. The new template (syntax) **pw_scf_dft_u** is only
     available to Quantum Espresso version `7.1` or above. If the user would like
     to use old syntax, please select Quantum Espresso version `7.0` or below,
     and use **pw_scf_dft_u_legacy**.
 
-1. Navigate to workflow page from the sidebar, and create new workflow. Expand
-details section and select Quantum Espresso version `7.2` from the drop-down.
 
-2. Click **Edit** button on the default **pw_scf** workflow unit. Expand details
-pane in the unit modal, and select **pw_scf_dft_u** flavor/ template. Close the
-unit modal.
+### Add hp.x unit to the workflow
+
+Hubbard parameters can be obtained from the *first principles*. We will use
+Quantum Espresso `hp.x` implementation of Linear Response theorem[^1].
+
+We can add `hp.x` workflow to previous PWscf (DFT+U) workflow by adding a new
+execution unit. Click the edit unit button on the second unit, and select `hp.x`
+executable. The `q`-grid for `hp.x` can be modified in the important settings
+tab.
+
+![Add new unit](/images/tutorials/hubbard/hubbard-04-add-new-unit.webp "Add new unit")
+
 
-3. Navigate to **Important Settings** tab, and scroll down to **hubbard**
+### Create and submit job
+
+- Navigate to jobs page via sidebar menu, and create new job.
+- Select material, here we have selected FeO. You can import new material from
+banks or upload structure files.
+- Select workflow, here we select the Hubbard workflow that we just created.
+
+![Select material and workflow](/images/tutorials/hubbard/hubbard-05-select-mat-workflow.webp "Select material and workflow")
+
+- Navigate to **Important Settings** tab, and scroll down to **hubbard**
 section. Here we are able to specify the Hubbard U values specific to atomic
 species and orbital (Hubbard manifold). You can add new or delete a row in the
 Hubbard card.
 
-4. We can use this workflow to run DFT+U PWscf calculation.
+![Important settings](/images/tutorials/hubbard/hubbard-06-imp-settings.webp "Important settings")
 
-## Calculation of Hubbard parameters
+![Edit Hubbard card](/images/tutorials/hubbard/hubbard-07-card-values.webp "Edit Hubbard card")
 
-Hubbard parameters can be obtained from the *first principles*. We will use
-Quantum Espresso `hp.x` implementation of Linear Response theorem[^1]. For this,
-we need to add new execution unit to our workflow. Click the edit unit button,
-and select `hp.x` executable. The `q`-grid for `hp.x` can be modified in the
-important settings.
+- Go to **Compute** tab, and select number of processors and other compute
+parameters.
+
+![Set compute parameters](/images/tutorials/hubbard/hubbard-08-compute-parameters.webp "Set compute parameters")
+
+!!!warning
+    As of 20/Dec/2023, there is a bug in our platform that prevents running MPI
+    jobs in single processor when Intel (default) build of Quantum Espresso is
+    used. Please select at least 2 processors/ cores if you are using Intel
+    build as a workaround. Alternatively, you may use GNU build of Quantum
+    Espresso.
+
+- Now we are ready to submit the job for running the calculation.
+
+![Results](/images/tutorials/hubbard/hubbard-09-result.webp "Results")
+
+Once the job is finished, the Hubbard U values are shown in the **Results** tab.
 
 In the below animation, we go through an example calculation.
 
 <div class="video-wrapper">
-<iframe class="gifffer" width="100%" height="100%" src="https://www.youtube.com/embed/Uh9OWJHKlQY" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe class="gifffer" width="100%" height="100%" src="https://www.youtube.com/embed/33PykNO8QlQ" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 </div>
 
+
 ## References
 
 [^1]: [HP – A code for the calculation of Hubbard parameters using density-functional perturbation theory, I. Timrov, N. Marzari, M. Cococcioni, Computer Physics Communications, **279**, 108455 (2022)](https://doi.org/10.1016/j.cpc.2022.108455).