Impurity-state-like nature of Fermi-liquid states in Bi2Sr2CaCu2O8 observed by photoemission and x-ray absorption

Matsuyama, H.; Takahashi, Takashi; Katayama‐Yoshida, Hiroshi; Kashiwakura, T.; Okabe, Yutaka; Satō, Shigeru; Kosugi, Nobuhiro; Yagishita, Akira; Tanaka, Kazuhide; Fujimoto, Hitoshi; Inokuchi, Hiroo

doi:10.1016/0921-4534(89)90435-8

Cited by 106 publications

(16 citation statements)

References 8 publications

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“…Some concluded to the presence of a significant (10-20%) weight of 3dz2_ r2 (3dz2) symmetry states [4][5][6][7][8] while others [9] reported there was only ~ 5% weight of the 3dz2 states. As regards the O 2p holes, a number of polarised O K edge XAS have been published [3,4,6,[12][13][14][15] without any conclusive evidence for the presence of O 2pz symmetry unoccupied states. To date most of the measurements have been performed in the normal state of the compounds and few results are available to understand the behaviour of the holes in the superconducting state except for a recent report by Faiz et al [15].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, its stability in UHV conditions has put the Bi2212 compound into the category of the most suitable systems for such studies, the results of which may probably represent the whole class of high-T~ oxides. To date there are a number of inconsistent reports [3][4][5][6][7][8][9][10][11][12][13][14][15] about the symmetry of the Cu 3d and O 2p holes in the Bi2212 system. Some concluded to the presence of a significant (10-20%) weight of 3dz2_ r2 (3dz2) symmetry states [4][5][6][7][8] while others [9] reported there was only ~ 5% weight of the 3dz2 states.…”

Section: Introductionmentioning

confidence: 99%

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Electronic structure studies of the Bi2212 system by polarised X-ray absorption measurement

Saini¹,

Law²,

Pudney³

et al. 1995

Physica C: Superconductivity

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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. AbstractPolarised X-ray absorption (XAS) measurements have been made on high-quality superconducting Bi2Sr2CaCu2Os+y (Bi2212) single crystals to investigate the microscopic electronic structure in the normal and superconducting state of the system. The Cu L 3 XAS results led us to conclude that either there are no holes of 3dzz symmetry, or if any, they are insignificant in number. On the other hand, the O K XAS results show the presence of a significant density of p~ symmetry orbitals for itinerant holes. An increase in the 3d9_L/3d 9 ratio estimated from the Cu L 3 XAS measurements was observed while going from the normal to the superconducting state of the system. The results are discussed in the light of the structural distortions taking place below T c.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electronic structure studies of the Bi2212 system by polarised X-ray absorption measurement

Saini¹,

Law²,

Pudney³

et al. 1995

Physica C: Superconductivity

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“…Third, localized states associated with impurities produce a photoemission which is distinctive in that its intensity increases in proportion with the density of impurities. The carrier-induced photoemission of cuprate superconductors is like that from impurity states' localized carriers [45,46]. Fourth, localized electrons generally decrease the lifetimes of impinging positrons by providing centres for their annihilation.…”

Section: Discussionmentioning

confidence: 98%

In-plane conductivity of a layered large-bipolaron liquid

Emin

2015

Philosophical Magazine

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Distinctive normal-state properties of cuprate superconductors follow from their charge carriers forming a large-bipolaron liquid. The very weak scattering of the slow-moving heavy-massed excitations of the liquid by acoustic phonons yields a scattering rate that is less than the Debye frequency. The moderate liquid mobility, greater than 1 cm2/V-sec at 300 K, results as the weak scattering of the liquid compensates for its large mass. In resolution of a long-standing dilemma, the dc resistivity resulting from scattering by acoustic phonons remains nearly proportional to temperature to well below the Debye temperature. Above the Debye frequency the frequency-dependent conductivity is dominated by excitation and photo-ionization of the self-trapped electronic carriers of the large-bipolarons. Below the Debye frequency the frequency-dependent conductivity is dominated by the Drude-like collective motion of the large-bipolaron liquid. The gap between these two domains sharpens with decreasing temperature as phonon scattering of the liquid diminishes. The high-frequency electronic excitations survive in the superconducting state

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“…Other workers have also noted and discussed this aspect of the near-E, emission in Nd,_XCe,CuO, [. 51,52] and Bi,Sr,Ca,_,Y,Cu,O, [53,54]. The discussion of ref.…”

Section: The Near-e States Of the Metalmentioning

confidence: 99%

Electron spectroscopy of strongly correlated systems

Allen

1991

Physica B: Condensed Matter

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Invited paper. An overview is given of current electron spectroscopy studies of the single-particle electronic structure of strongly correlated systems. Specific topics include (i) the Ce 4f spectrum of CeCu,Si,, (ii) the 5f spectrum of Y,_,U,Pd,, and (iii) the doped metallic state of high-temperature superconductor materials, for which it is argued that in the Luttinger liquid scenario, the Fermi energy of the metal should lie in the parent insulator's gap, as observed experimentally.

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Impurity-state-like nature of Fermi-liquid states in Bi2Sr2CaCu2O8 observed by photoemission and x-ray absorption

Cited by 106 publications

References 8 publications

Electronic structure studies of the Bi2212 system by polarised X-ray absorption measurement

Electronic structure studies of the Bi2212 system by polarised X-ray absorption measurement

In-plane conductivity of a layered large-bipolaron liquid

Electron spectroscopy of strongly correlated systems

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