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skydark木蟲 (正式寫手)
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[求助]
空間群bilbao crystallographic server網(wǎng)站的困擾
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bilbao crystallographic server ?W???????? ??????????????????g?????? ?? E C2x C2y C2z I ????? ???????ǹ??????????g???? ?o???Bi2Se3 space group no 166 ??? ???? space group no 64 ?????īI???????? ????и???????????? ??bilbao crystallographic server?e??, ????īI???e? ???????????e???? Bi2Se3 ?īI : http://journals.aps.org/prb/pdf/10.1103/PhysRevB.82.045122 ???? ?īI : http://journals.aps.org/prb/pdf/10.1103/PhysRevB.90.115439 bilbao crystallographic server??W?: http://www.cryst.ehu.es/ ??bilbao crystallographic server????? ?c?x Representation Theory Applications?????? REPRES Space Groups Representations ??? ???x??space group?????Y?^?? 64 ?? 166, ??? next ????x GM (gamma point) , ??????????????°? continue ????????? continue ????????F????g?????? ?????īI???? ???l?Fbilbao crystallographic server??????īI??????????? ????Bi2Se3??generators ????? E , R3 , R2 , I ??bilbao crystallographic server?@?F????4??generators ?? ??2???@????? R3 (??????3?? E, R2 ,I ???]???}) ?????????4??generators ????????????} ???īI???f?? ?@y?S???D180?????? ???????????translation?????......... ???λ????????n?? ???x!!! |
木蟲 (著名寫手)

木蟲 (正式寫手)
木蟲 (著名寫手)

木蟲 (正式寫手)
木蟲 (著名寫手)
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我用icsd上的數(shù)據(jù),看了下vesta的結(jié)果是 hexagonal的是 1 2 3 4 1 0 0 0 -1 0 0 1 0 -1 0 0 0 1 0 1 -1 0 1 0 0 0 -1 0 0 0 1 0 0 1 0 0 -1 0 0 -1 rhombohedral的是 E R3 R2 I 1 0 0 0 1 0 0 -1 0 -1 0 0 0 1 0 0 0 1 -1 0 0 0 -1 0 0 0 1 1 0 0 0 0 -1 0 0 -1 和你的一樣。但是我覺得這個應(yīng)該沒有什么問題,rhombohedral axes和hexagonal axes的基矢不一樣,對稱操作也不一樣。 另外我發(fā)現(xiàn)你給的PRB文章里面的x和y是基于笛卡爾坐標系,因此你要把它線性變換到hexagonal axes或者rhombohedral axes下,這樣對稱操作就是一致的了。 |

木蟲 (正式寫手)
木蟲 (著名寫手)
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#(C) 2014 by Fachinformationszentrum Karlsruhe. All rights reserved. data_165226-ICSD _database_code_ICSD 165226 _audit_creation_date 2010-02-01 _audit_update_record 2013-02-01 _chemical_name_systematic 'Bismuth selenide' _chemical_formula_structural 'Bi2 Se3' _chemical_formula_sum 'Bi2 Se3' _chemical_name_structure_type Bi2Te3 _exptl_crystal_density_diffrn 7.7 _publ_section_title ; X-ray diffraction and (119)Sn Moessbauer spectroscopy study of a new phase in the (Bi2 Se3) - (Sn Se) system: Sn Bi4 Se7 ; loop_ _citation_id _citation_journal_full _citation_year _citation_journal_volume _citation_page_first _citation_page_last _citation_journal_id_ASTM primary 'Inorganic Chemistry' 1999 38 2131 2135 INOCAJ loop_ _publ_author_name 'Perez Vicente, C.' 'Tirado, J.L.' 'Adouby, K.' 'Jumas, J.C.' 'Abba Toure, A.' 'Kra, G.' _cell_length_a 4.1355(5) _cell_length_b 4.1355(5) _cell_length_c 28.615(2) _cell_angle_alpha 90. _cell_angle_beta 90. _cell_angle_gamma 120. _cell_volume 423.82 _cell_formula_units_Z 3 _symmetry_space_group_name_H-M 'R -3 m H' _symmetry_Int_Tables_number 166 _refine_ls_R_factor_all 0.1091 loop_ _symmetry_equiv_pos_site_id _symmetry_equiv_pos_as_xyz 1 'x-y, -y, -z' 2 '-x, -x+y, -z' 3 'y, x, -z' 4 'x-y, x, -z' 5 'y, -x+y, -z' 6 '-x, -y, -z' 7 '-x+y, y, z' 8 'x, x-y, z' 9 '-y, -x, z' 10 '-x+y, -x, z' 11 '-y, x-y, z' 12 'x, y, z' 13 'x-y+2/3, -y+1/3, -z+1/3' 14 '-x+2/3, -x+y+1/3, -z+1/3' 15 'y+2/3, x+1/3, -z+1/3' 16 'x-y+2/3, x+1/3, -z+1/3' 17 'y+2/3, -x+y+1/3, -z+1/3' 18 '-x+2/3, -y+1/3, -z+1/3' 19 '-x+y+2/3, y+1/3, z+1/3' 20 'x+2/3, x-y+1/3, z+1/3' 21 '-y+2/3, -x+1/3, z+1/3' 22 '-x+y+2/3, -x+1/3, z+1/3' 23 '-y+2/3, x-y+1/3, z+1/3' 24 'x+2/3, y+1/3, z+1/3' 25 'x-y+1/3, -y+2/3, -z+2/3' 26 '-x+1/3, -x+y+2/3, -z+2/3' 27 'y+1/3, x+2/3, -z+2/3' 28 'x-y+1/3, x+2/3, -z+2/3' 29 'y+1/3, -x+y+2/3, -z+2/3' 30 '-x+1/3, -y+2/3, -z+2/3' 31 '-x+y+1/3, y+2/3, z+2/3' 32 'x+1/3, x-y+2/3, z+2/3' 33 '-y+1/3, -x+2/3, z+2/3' 34 '-x+y+1/3, -x+2/3, z+2/3' 35 '-y+1/3, x-y+2/3, z+2/3' 36 'x+1/3, y+2/3, z+2/3' loop_ _atom_type_symbol _atom_type_oxidation_number Bi3+ 3 Se2- -2 loop_ _atom_site_label _atom_site_type_symbol _atom_site_symmetry_multiplicity _atom_site_Wyckoff_symbol _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_B_iso_or_equiv _atom_site_occupancy _atom_site_attached_hydrogens Bi1 Bi3+ 6 c 0 0 0.4006(1) . 1. 0 Se1 Se2- 3 a 0 0 0 . 1. 0 Se2 Se2- 6 c 0 0 0.2109(2) . 1. 0 loop_ _atom_site_aniso_label _atom_site_aniso_type_symbol _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Bi1 Bi3+ 0.005(3) 0.005(3) 0.00109(5) 0.0025(15) 0. 0. Se1 Se2- 0.036(9) 0.036(9) 0.0010(2) 0.018(5) 0. 0. Se2 Se2- 0.016(8) 0.016(8) 0.0011(1) 0.008(4) 0. 0. #End of TTdata_165226-ICSD |

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