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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Dear Yusuf,<br>
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I'm not a developer but from my limited experience, I can tell that cell_dofree tag (the key to apply uniaxial strain) works well with DFT+U (With NC and USPP, I'm not sure about PAW). Finite electric field with DFT+U (NC and USPP) seems to work well too
based on few tests I did on computing the dielectric constant for oxides with DFT+U.
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Examples 08, 10 and VCSexample give you the basic elements for what you asked. But you need to combine and compose something out of these examples to meet your needs.<br>
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Mostafa<br>
MIT<br>
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