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ÇóÖú£ºÈçºÎ´ÓÄÜ´ø½á¹¹·ÖÎöspin orbit splitting
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ÏëÇë½Ìһϡ£ÎÒ¿´ÎÄÏ×˵ÓÃHopfieldµÄquasi-cubic model¿ÉÒÔÄâºÏ³öspin-orbit splittingºÍcrystal field splitting. quasi-cubic modelÈçÏ£º ¼ÆËã¿ÉÒԵõ½ÄÜ´øµÄÊý¾Ý¡£Valence band µÄ×îÉÏÃæÈý¸öenergy levels E1, E2, E3 Âú×ãÈçϹØÏµ£º E12=E2-E1=1/2*(D_SO+D_CF)+1/2*sqrt[(D_SO+D_CF)^2-8/3*D_SO*D_CF]; E13=E3-E1=1/2*(D_SO+D_CF)-1/2*sqrt[(D_SO+D_CF)^2-8/3*D_SO*D_CF]; D_SO ºÍ D_CF ·Ö±ðΪ spin orbit splitting ºÍ crystal field splitting. ÎÄÏ×˵ÓüÆËã³öÀ´µÄE12£¬E13¾Í¿ÉÒÔͨ¹ýleast square fitµÃµ½D_SO, D_CF. ÎÒÔõô¶¼Ï벻ͨÔõÑù×öÕâÖÖfit¡£Ö»³¢ÊÔ×ÅMATLABµÄfminsearchÃüÁîµÃµ½µÄ×ÜÊDz»ÕýÈ·¡£ ÇëÎÊÓÐË×öÏàͬµÄ·½ÃæµÄ¿ÉÒÔ¸ø¸öÌáʾÂð£¿Ìáǰ¸ÐлÏÈ¡£ PS: QUASI-CUBIC MODEL J. chem. phys. solids. 15, 97 (1960) Phys. Rev. B, 55, 13647 (1997) |
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