Determination of the Complex Permittivity by Soft X-ray Magneto-Optical Effect Using Polarization Modulation

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  • 偏光変調型軟X線を用いた複素誘電率の直接測定
  • 実験技術 偏光変調型軟X線を用いた複素誘電率の直接測定
  • ジッケン ギジュツ ヘンコウ ヘンチョウガタナンXセン オ モチイタ フクソ ユウデンリツ ノ チョクセツ ソクテイ

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Abstract

<p>Permittivity is one of the most important parameters in condensed matter physics. It has been required not only experimentally to estimate materials and design optical devices, but also theoretically to discuss electronic structures and optical transitions. However, since control of polarization is difficult in the soft X-ray energy region where there are many absorption edges, measuring permittivity has been impossible. We have succeeded in directly determining the complex permittivity tensor using a method combining a developed light source with polarization modulation and the magneto-optical Kerr effect in this energy region. The empirical permittivity has element specificity and perfect confirmation using the first-principles calculation for itinerant electrons systems. Here we show the detail and usefulness of the magneto-optical method using the new light source with permittivity spectra.</p>

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  • Butsuri

    Butsuri 74 (9), 646-651, 2019-09-05

    The Physical Society of Japan

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