Scaling Relation of Two-Photon Absorption in Antiferromagnetic Insulators(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

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概要

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• We discuss some properties of the nonlinear absorption spectrum of insulators with a gap originating from the electron correlation. We formulate a method of evaluating the nonlinear susceptibility and apply this to the antiferromagnetic insulator. A scaling relation for two-photon absorption is derived and applied to a quantitative estimation, which gives values comparable to those of experiments on Mott insulators. The direct transition term is found to be dominant in many-body systems. It is also shown that our formulation naturally includes the final-states interaction (the charge fluctuation and the excitonic effect), which gives a sufficient contribution to the two-photon absorption spectrum.

• 社団法人日本物理学会の論文
• 2006-10-15

著者

• Jujo Takanobu

  Nara Inst. Sci. And Technol. Nara

• Jujo Takanobu

  Graduate School Of Materials Science Nara Institute Of Science And Technology

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