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135791yx@新蟲(chóng) (小有名氣)
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[求助]
高對(duì)稱點(diǎn)路徑 已有1人參與
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我在用vasp算的KPOINTS的高對(duì)稱點(diǎn)路徑與布里淵區(qū)路徑不同,它是四方晶系,KPOINTS得到的高對(duì)稱點(diǎn)路徑是G-X-M-G-Z|Z_0-M-X-P-N-G,而四方晶系的布里淵區(qū)路徑如圖有三種,為什么會(huì)不符,有兩種是a<c時(shí)和a>c時(shí),但我的體系是a=c,這樣應(yīng)該怎么解決 發(fā)自小木蟲(chóng)手機(jī)客戶端 |
木蟲(chóng) (正式寫手)
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You can randomly select a K-path. For a Tetragonal crystal system (四方晶系), there are many possibilities: a=c; or a=b; or b=c. So, the high symmetry points could be differently defined. Soan easy way to solve your problem is to upload your cif file to the web: https://www.materialscloud.org/work/tools/seekpath The web will generate the correct K-path based on the proper/correct high symmetry points created from your cif. |
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