Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic X-ray scattering at the oxygen K edge

• Ishii, Kenji

• Toyama, Takami

• Asano, Shun

• Sato, Kentaro

• Fujita, Masaki

• Wakimoto, Shuichi

• Tsutsui, Kenji

• Sota, Shigetoshi

• Miyawaki, Jun

• Niwa, Hideharu

• Harada, Yoshihisa

• Pelliciari, J.

• Huang, Y.

• Schmitt, T.

• Yamamoto, Yoshiya

• Mizuki, Junichiro

Bibliographic Information

Other Title

• 酸素K吸収端共鳴非弾性X線散乱によるホールドープした銅酸化物における電荷励起の運動量依存性の観測
• Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>K</mml:mi></mml:math> edge

Abstract

We investigate electronic excitations in La$_{2-x}$(Br,Sr)$_x$CuO$_4$ using resonant inelastic X-ray scattering (RIXS) at the oxygen $K$ edge. We observed momentum-dependent spectral weight below 1 eV, which is consistent with theoretical calculation of the dynamical charge structure factor on oxygen orbitals in a three-band Hubbard model. Our results confirm that the momentum-dependent charge excitations exist on the order of the transfer energy ($t$), and the broad spectral line shape indicates damped and incoherent character of the charge excitations at the energy range in the doped Mott insulators.

Journal

• Physical Review B

  Physical Review B 96 (11), 115148_1-115148_8, 2017-09

  American Physical Society (APS)

Details

• CRID: 1050564287525601792
• NII Article ID: 120006472643
• DOI: 10.1103/physrevb.96.115148
• ISSN: 24699969
• ISSN: 24699950
• Web Site: https://jopss.jaea.go.jp/search/servlet/search?5060797
• Web Site: https://link.aps.org/article/10.1103/PhysRevB.96.115148
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.96.115148/fulltext
• Text Lang: en
• Article Type: journal article
• Data Source:
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