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MS求助声子谱,谢谢大家!
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各位前辈好!我最近计算钛酸钡不等价掺杂(PS:超胞2×2×2 无禁带宽度),采用的泛函是GGA+PBE,赝势为norm-conserving,linear-response法 计算声子谱出现一些问题,如下图,不知道什么原因,计算的声子谱为一条为0的直线。希望各位前辈能指点一二,另外我还计算了一下红外和拉曼等性质,也是出现了错误,错误显示如下: 链接: https://pan.baidu.com/s/1EQHsZHlfM8dzBJmzqTqmjA?pwd=rutp 提取码: rutp 复制这段内容后打开百度网盘手机App,操作更方便哦 WARNING: Ground state wavefunctions and density data in check file marked as unconverged. because some parameters changed on continuation Writing model to BaTiO3_Efield.check ??????????????????????????????????????????????????????????????????????????????? WARNING: Variational DFPT solver is not implemented for metallic (partial occupancy) systems but PHONON_DFPT_METHOD == "ALLBANDS". Parameter PHONON_DFPT_METHOD changed to "DM" ??????????????????????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????????????????????????????? INFORMATION: Calculation of Born effective charges and IR intensities is not meaningful for metallic (partial occupancy) systems. Parameter CALCULATE_BORN_CHARGES changed to .FALSE. ??????????????????????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????????????????????????????? INFORMATION: Calculation of LO/TO splitting is not meaningful for metallic (partial occupancy) systems. Parameter PHONON_CALC_LO_TO_SPLITTING changed to .FALSE. ??????????????????????????????????????????????????????????????????????????????? Error: secondd_polarizability called with partial occupancy (metallic) system Current trace stack: secondd_polarisability phonon_calculate_dynamical_dfpt phonon_calculate castep Error: secondd_polarizability called with partial occupancy (metallic) system Error: secondd_polarizability called with partial occupancy (metallic) system |
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2022-08-08 11:43
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轩城?July(金币+1): 谢谢参与
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轩城?July(金币+1): 谢谢参与
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