Low Temperature Photoconductivity of F Center in KCl
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概要
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Transient Photoconductivity of additively colored KCl is studied for excitation in the F, K, L_1 and L_2 bands at low temperatures down to 1.3°K. Electron quantum yield is found near unity in L bands and in high energy tail of K band in the whole temperature range. K band can be divided into two components; K_1 band with low electron yield and K_2 band with unit yield. It is concluded K_2 band corresponds to transition to the conduction band minimum and L bands to the states in the conduction band. Electron yield for K_1 and F bands is studied as a function of temperature and applied electric field. Thermal binding energy of excited state is found the same for K_1 and F states. Field ionization from K_1 state starts at far lower field than from F state. Transport of electrons at low temperature is characterized by non-ohmic behavior above critical field, where electron Schubweg is proportional to E^<0.5〜0.7>. The high field behavior can be understood as hot electron phenomena.
- 社団法人日本物理学会の論文
- 1967-03-05
著者
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Kanzaki Hiroshi
Institute For Solid State Physics University Of Tokyo
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Nakazawa Fumiko
Institute For Solid Slate Physics University Of Tokyo
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Kanzaki Hiroshi
Institute For Solid Slate Physics University Of Tokyo
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