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ÎÒ¼ÆËãµÄʱºòËã³öÁËIntegrated Spin Density£¬ÔõÑù²ÅÄÜÅжÏÊÇÌú´ÅÐÔ»¹ÊÇÑÇÌú´ÅÐÔÄØ£¿ÊÇÓ¦¸Ã¼ÆËãÿ¸öÔ×ӵĴÅÐÔ°É£¿ ÎÒ°´ÕÕ°ïÖúÎĵµÀïÌṩµÄµÚ¶þÖÖ·½·¨The latter method, which specifies the spin state of the atoms in the system, is more general and gives much more flexibility. It is possible to set up ferromagnetic, ferrimagnetic, or antiferromagnetic calculations to get different starting spin arrangements. 1.Set formal spins for the atoms. 2.After setting the formal spins, find and impose the symmetry of the system. 3.Choose Modules | CASTEP | Calculation from the menu bar to display the CASTEP Calculation dialog. 4.Select the Setup tab. 5.Check the Spin polarized and Use formal spin as initial checkboxes. 6.Select the Electronic tab and press the More... button to access the CASTEP Electronic Options dialog. 7.Select the SCF tab. 8.Select Density mixing as the Electronic minimizer setting. 9.Uncheck the Fix occupancy checkbox and check the Optimize total spin checkbox. µÃ³öµÄ»¹ÊÇÖ»ÓÐÒ»¸öIntegrated Spin Density£¬»¹ÄÜ´ÓÆäËûµØ·½µÃ³ö´ÅÐÔµÄÐÅϢô£¿ |
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