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Analysis of resonant inelastic X-ray scattering in La$$_2$$CuO$$_4$$

La$$_2$$CuO$$_4$$における共鳴非弾性X線散乱の解析

野村 拓司; 五十嵐 潤一*

Nomura, Takuji; Igarashi, Junichi*

銅酸化物高温超伝導体の母物質であるLa$$_2$$CuO$$_4$$における共鳴非弾性X線散乱の実験結果を理論的に解析した。平均場近似で基底状態を記述し、励起過程を乱雑位相近似で扱った。実験ではスペクトルの形状に光子の運動量移行への強い依存性が得られているが、これらを定量的に説明することに成功した。

The experimental result of resonant inelastic X-ray scattering in La$$_2$$CuO$$_4$$ is theoretically analyzed. The ground state of the system is described within the Hartree-Fock approximation, and the electronic excitation processes are taken account of within the random phase approximation. In the experiment, the spectral shape shows a strong dependence on the transferred momentum of the photon. We have succeeded in reproducing theoretically this dependence quantitatively.

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パーセンタイル:83.01

分野:Materials Science, Multidisciplinary

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