Resonant inelastic x-ray scattering from strongly correlated copper oxides

被引：1

作者：

Hill, JP ^{[1
]}

Kao, CC

Von Zimmermann, M

Hämäläinen, K

Huotari, S

Berman, LE

Caliebe, WAL

Hirota, K

Matsubara, M

Kotani, A

Peng, JL

Greene, RL

Tsukada, I

Masuda, T

Uchinokura, K

机构：

[1] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[2] Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA

[3] Univ Helsinki, Dept Phys, FIN-00014 Helsinki, Finland

[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 980, Japan

[5] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan

[6] Univ Maryland, Dept Phys & Astron, Ctr Superconduct Res, College Pk, MD 20742 USA

[7] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 113, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 1999年 / 38卷

关键词：

resonant inelastic x-ray scattering; copper oxides; charge transfer;

D O I：

10.7567/JJAPS.38S1.118

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report resonant inelastic x-ray scattering from Nd2CuO4 and two other copper oxides, YBa2Cu3O7-delta and CuGeO3. In each case an excitation of similar to 6 eV is observed when the incident photon energy is tuned through the Cu K-edge. Calculations for Nd2CuO4, based on the Anderson impurity model identify this as a charge transfer excitation to the antibonding state. For Nd2CuO4, the incident energy dependence of the inelastic intensity exhibits a single resonance at 8990 eV, corresponding to a <(1s)under bar>3d(0)4(kappa), intermediate state. The absence of a resonance associated with the <(1s)under bar>3d(0)(L) under bar 4p(kappa) intermediate state is attributed to non-local effects. Preliminary results from CuCeO3, which exhibit two resonances support this conclusion.

引用

页码：118 / 121

页数：4

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