The XUV Spectra of KMgF_3 and NaMgF_3
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概要
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By using synchrotron radiatic>n as the light source, the near-normal incidencereflection spectra of KMgF, and NaMgF. were measured in tl?e XUV region, fromwhich the spectra of imaginary part of the dielectric constant were obtained by meansof the Kramers-Kronig transformation. The largest sharp peak observed at 11.9 eV inKMgF, was assigned to T., (upper)-+f. exciton (A exciton) attd the small hump at13.5 eV to the T., (lower)-+f. exciton (B exciton). The line shapes of the A and Bexcitons were calculated theoretically by taking into account the interference effectsbetween the A and B channels. It was found that the interchannel mixing due to theelectron-hole Coulomb and exchange interactions has an important effect on theexperimentally observed line shapes.
- 社団法人日本物理学会の論文
- 1977-12-15
著者
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Onaka Ryumyo
Institute For Optical Research Kyoiku University
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Takahashi Haruo
Institute For Optical Research Kyoiku University
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Onaka Ryumyo
Institute For Optical Research Kupiku University
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Onaka Ryumyo
Instirure For Optical Research Kyoiku University
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