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IBZKPT file, tetrahedron method and tetrahedron connection tables
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[Õ½ÚÒ³Âë]£º [ÔÎÄÄÚÈÝ]£º 5.6 P40 The file IBZKPT is compatible with the KPOINTS file and is generated if the automatic k-mesh generation is selected in the file KPOINTS. It contains the k-point coordinates and weights (and if the tetrahedron method was selected additional tetrahedron connection tables) in the "Entering all k-points explicity " format used for providing k-points 'by hand'. This file can also be generated with the external tool: > kpoints IBZKPT may be coppied to the file KPOINTS to save time, if one KPOINTS set is used several times 9.3 P131 The first step is to provide a KPOINTS file in the "entering all k-point cooridinates explicity"-format. If you want to calculate a DOS this file must also contain connection lists for tetrahedra (the tetrahedron method is the only probably the most usefull approach to calculate a DOS because it is parameter-free). [ÎÊÌâ]£º (1)IBZKPTÓÐʲôÓÃÄØ?ÒªµÃµ½IBZKPT,¿ÉÒÔÏÈÔËÐÐÒ»ÏÂvasp(if automatic k-mesh generation is selected in the file KPOINTS),È»ºóÂíÉÏÍ£ÏÂÀ´?»òÕßÔËÐÐÒ»ÏÂkpoints? (2)k-pointµÄweightsÊÇʲôÒâ˼?ÔÚDOSºÍBANDSTRUCTURE¼ÆËãÖÐÓÐʲôÓÃ? (3)tetrahedron method Ö¸µÄÊÇISMEAR = -5?ÒªËãDOSºÍBandstructure,±ØÐëISMEAR = -5? (4)connection lists for tetrahedraÊÇʲôÒâ˼?tetrahedron connection tablesÊÇʲôÒâ˼? [ Last edited by cenwanglai on 2010-6-30 at 14:56 ] |
37Â¥2010-06-30 14:27:18
fanchen021
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