Optical Constants and Exciton States in KCl Single Crystals. I. The Low Temperature Properties

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概要

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• Optical measurements were carried out on the reflectivity and absorption tails of KCl single crystals over the region 6.0 to 12ev in the temperature range 10 to 573°K. With use of these data, Kramers and Kronig analysis was made on reflectivity spectra for three different temperatures 10, 78 and 295°K. The analysed spectra of important optical constants are presented in this article, and their properties are discussed in order to clarify the excitonic picture in a single crystalline lattice. The result is analysed along the theories of Toyozawa and Elliot. It was found that the first exciton line shape and the plateau in the higher energy side of the step are explained by them. The two overlapping components of the first band can be well separated at low temperatures in the case of single crystals, and this permits us to determine an oscillator strength for each component as 0.27 and 0.375 for (3/2, 1/2)- and (1/2, 1/2)-transition, respectively. Attempts were made to express the spectrum by an analytic expression in the first exciton band region.

• 社団法人日本物理学会の論文
• 1967-02-05

著者

• Tomiki Tetsuhiko

  Matsushita Research Institute Tokyo Inc.

• Tomiki Tetsuhiko

  Matsushita Research Institute Tokyo

関連論文

• Optical Constants and Exciton States in KCl Single Crystals. I. The Low Temperature Properties
• The UV Reflectivity Spectra of SrF_2 Single Crystals
• Temperature Dependence of the Fundamental Spectra of Potassium-Halides in the Schumann Ultraviolet Region (4.4∼13.5 eV)
• Reflectivity Spectra of KBr and KI Single Crystals in Their Fundamental Region
• The Urbach Tails and Reflection Spectra of NaCl Single Crystals
• Ionic DC-Conductivities of KCl
• Optical Studies on NaCl Crystals
• The UV Reflectivity Spectra of KF, CaF_2 and BaF_2 Single Crystals
• Absorption Edges of NaCl Single Crystal
• The Absorption Edge of KCl
• Optical Constants and Exciton States in KCl Single Crystals : II. The Spectra of Reflectivity and Absorption Constant
• Optical Studies of Alkali Fluorides and Alkaline Earth Fluorides in VUV Region
• Optical Constants and Excition States in KCl Single Crystals. : III. The Spectra of Conductivity and of Energy Loss
• UV Reflection Spectra of KCl Single Crystals

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