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¶ÔÓÅ»¯ºóµÄ½á¹¹½øÐÐÉù×ӯ׼ÆË㣬½á¹û·¢ÏÖ³ö´í£¬Á½´¦´íÎóÈçÏ¡£ÒòΪÏÖÔڵĽṹֻÓÐÓÃLDA+U²ÅÄÜ´ò¿ªºÜС´øÏ¶£¨0.037eV£©£¬¶ø²»¼ÓUûÓдøÏ¶£¬²»ÖªµÀÕâ¸ö¸ÃÈçºÎ´¦Àí£¬ÓÐûÓÐÓöµ½¹ýÏàËÆÇé¿öµÄ£¿ Secondd_CG_minimize: Can not converge to requested precision in 100 iterations Best convergence achievable is 0.929215E-02eV/A**2 Consider increasing PHONON_MAX_CYCLES or convergence tolerance PHONON_ENERGY_TOL ERROR detected in secondd_phonon_linmin_E2 ? ? Line minimiser found a MAXIMUM in variational E(2) ? ? trial step = -94.898797 ? ? step to stationary point = 27.881117 ? ? E(2) before line step = -9798.4934 eV/A**2 ? ? dE(2)/dx before line step = 0.54520667 eV/A**2 ? ? E(2) after trial step = -9938.2859 eV/A**2 ? ? E(2) at stationary point = -9790.8929 eV/A**2 ? ? ? ? This can be caused by the system having no or very small band gap. ? ? We suggest running a bandstructure calculation to investigate. ? ? ? ? CONVERGENCE OF FIRST ORDER DFPT WAVEFUNCTIONS HAS FAILED |
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