Dear Cp2k users and developers, <div><br /></div><div>I was wondering if you could help me with a doubt i have , </div><div>does cp2k modifies the cell vectors (applies an operation to them) once you set up a cell opt calculations </div><div><br /></div><div>for example </div><div>say you have a systems with these cell parameters in the input file </div><div> &CELL<br /> A -1.59515785 -2.7628944422923 -3.9070099102745e-16<br /> B -1.59515785 2.7628944422923 1.9535049551373e-16<br /> C 0.0 0.0 -14.879004<br /> MULTIPLE_UNIT_CELL 4 4 1<br /> SYMMETRY MONOCLINIC_GAMMA_AB<br /></div><div><br /></div><div><br /></div><div>but once the simulations starts it becomes </div><div><br /></div><div>CELL_TOP| Volume [angstrom^3]: 2098.417005<br /> CELL_TOP| Vector a [angstrom 12.761 0.000 0.000 |a| = 12.761263<br /> CELL_TOP| Vector b [angstrom -6.381 11.052 0.000 |b| = 12.761263<br /> CELL_TOP| Vector c [angstrom 0.000 0.000 14.879 |c| = 14.879004<br /> CELL_TOP| Angle (b,c), alpha [degree]: 90.000000<br /> CELL_TOP| Angle (a,c), beta [degree]: 90.000000<br /> CELL_TOP| Angle (a,b), gamma [degree]: 120.000000<br /> CELL_TOP| Requested initial symmetry: MONOCLINIC_GAMMA_AB<br /> CELL_TOP| Numerically orthorhombic: NO<br /></div><div><br /></div><div>So if you notices the magnitudes are the same but vector a, and b are in a different basis. </div><div>Is there a way to avoid this ? </div><div><br /></div><div>best</div><div><br /></div><div>Andres Ortega</div><div><br /></div>
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