Magnetoabsorption of Indirect Exciton in AgCl and AgBr

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概要

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• Magnetoabsorption of indirect exciton has been studied in AgCl and AgBr at 4.2 K. A new absorption appears on the lower energy side of the zerofield absorption edge when a magnetic field is applied. Kinks are observed in this absorption curve in a high magnetic field. Their dependences on the magnetic field are analysed by taking an electron-hole exchange interaction into consideration. It is concluded that the new absorption is due to a triplet exciton, and the highest tops of the valence bands in both AgCl and AgBr are at the L-point in the Brillouin zone, their states being (L_4-,L_5-). Exchange energy Δ and effective g-values are estimated as Δ=0.79 meV, g^c=1.9, g_<⫽>^υ=0.7 and Δ=0.33 meV, g^c=2.5, g_<⫽>^υ=0.5 for AgCl and AgBr, respectively.

• 社団法人日本物理学会の論文
• 1973-12-05

著者

• Matsushita Mitsugu

  Institute For Solid State Physics The University Of Tokyo:(present Address) Rd Division Jeol Ltd.

関連論文

• Magnetoabsorption of Indirect Exciton in AgCl
• X-Point Direct Exciton in TlCl in Magnetic Field
• Magnetoabsorption of Indirect Exciton in AgCl and AgBr

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