摘要
用紫外可见分光光度计测量了碲镉汞样品的反射谱，在基本反射区有两个主要反射峰Ｅ１和Ｅ２，Ｅ１峰分裂为双峰结构．利用电子跃迁的量子理论，指认Ｅ１峰为〈１１１〉方向Λ４，５→Λ６的跃迁；Ｅ１＋Δ１峰为〈１１１〉方向Λ６→Λ６的跃迁；Ｅ２峰为〈１００〉方向Ｘ７→Ｘ６的跃迁．
The fundamental reflectivity spectrum of HgCdTe have been investigated.The feature of the spectra is the presence of E 1 and E 2 peaks in the fundamental absorption region.The lower energy peak can be split into a doublet ( E 1 and E 1+ Δ 1).A three-dimensional saddle point is used to fit the E 1 and E 1+ Δ 1 critical point and some simulated calculation is done for E 2 at X point.The calculated results are compared with the measured results and prominent features of the dielectric spectra are identified with critical-point transitions at the Λ and X points in the Brillouin zone.
出处
《山东大学学报（自然科学版）》
CSCD
1999年第2期176-180,共5页
Journal of Shandong University(Natural Science Edition)
基金
山东省自然科学基金
关键词
电子跃迁
反射峰
反射谱
碲镉汞三元合金
E 1, E 2 transitions
HgCdTe
reflectivity peaks
reflectivity spectrum
