Out-of-phase plasmon excitations in the trilayer cuprate 
<math>
  <mrow>
    <msub>
      <mi>Bi</mi>
      <mn>2</mn>
    </msub>
    <msub>
      <mi>Sr</mi>
      <mn>2</mn>
    </msub>
    <msub>
      <mi>Ca</mi>
      <mn>2</mn>
    </msub>
    <msub>
      <mi>Cu</mi>
      <mn>3</mn>
    </msub>
    <msub>
      <mi>O</mi>
      <mrow>
        <mn>10</mn>
        <mo>+</mo>
        <mi>δ</mi>
      </mrow>
    </msub>
  </mrow>
</math>

S. Nakata; M. Bejas; J. Okamoto; K. Yamamoto; D. Shiga; R. Takahashi; H. Y. Huang; H. Kumigashira; H. Wadati; J. Miyawaki; S. Ishida; H. Eisaki; A. Fujimori; A. Greco; H. Yamase; D. J. Huang; H. Suzuki

doi:10.1103/physrevb.111.165141

論文 Out-of-phase plasmon excitations in the trilayer cuprate

{Bi}_{2} {Sr}_{2} {Ca}_{2} {Cu}_{3} O_{10 + δ}

S. Nakata ; M. Bejas ; J. Okamoto ; K. Yamamoto ; D. Shiga ; R. Takahashi ; H. Y. Huang ; H. Kumigashira ; H. Wadati ; J. Miyawaki ; S. Ishida ; H. Eisaki ; A. Fujimori ; A. Greco ; H. Yamase ; D. J. Huang ; H. Suzuki

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引用

S. Nakata, M. Bejas, J. Okamoto, K. Yamamoto, D. Shiga, R. Takahashi, H. Y. Huang, H. Kumigashira, H. Wadati, J. Miyawaki, S. Ishida, H. Eisaki, A. Fujimori, A. Greco, H. Yamase, D. J. Huang, H. Suzuki. Out-of-phase plasmon excitations in the trilayer cuprate

{Bi}_{2} {Sr}_{2} {Ca}_{2} {Cu}_{3} O_{10 + δ}

. Physical Review B. 2025, 111 (16), 165141. https://doi.org/10.1103/physrevb.111.165141

(BibTeX)

説明:

(abstract)

Within a homologous series of cuprate superconductors, variations in the stacking of CuO2 layers influence the collective charge dynamics through the long-range Coulomb interactions. We use O K-edge resonant inelastic x-ray scattering to reveal plasmon excitations in the optimally doped trilayer Bi2Sr2Ca2Cu3O10+delta. The observed plasmon exhibits nearly qz-independent dispersion and a large excitation gap of approximately 300 meV. This mode is primarily ascribed to the omega− mode, where the charge density on the outer CuO2 sheets oscillates out of phase while the density in the inner sheet remains unaltered at qz = 0. The intensity of the acoustic omega3 mode is relatively weak and becomes vanishingly small near (qx , qy ) = (0, 0). This result highlights a qualitative change in the eigenmode of the dominant low-energy plasmon with the number of CuO2 layers.

権利情報:

In Copyright

©2025 American Physical Society

キーワード: プラズマ振動, 共鳴非弾性X線散乱, 層状構造物質, 銅酸化物高温超伝導体, ナノテラス

刊行年月日: 2025-04-21

出版者: American Physical Society (APS)

掲載誌:

Physical Review B (ISSN: 24699950) vol. 111 issue. 16 165141

研究助成金:

Japan Society for the Promotion of Science JP19H05823
Japan Society for the Promotion of Science JP22K13994
Japan Society for the Promotion of Science JP20H01856
Japan Society for the Promotion of Science JP22K03535
Japan Society for the Promotion of Science JP20H01856
National Science and Technology Council NSTC 113-2112-M-007-033

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5487

公開URL: https://doi.org/10.1103/physrevb.111.165141

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更新時刻: 2025-05-20 08:30:40 +0900

MDRでの公開時刻: 2025-05-20 08:18:57 +0900

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