Electron interactions and charge ordering in CuO 2 compounds

Muschler, B.; Prestel, W.; Tassini, L.; Hackl, R.; Lambacher, M.; Erb, A.; Komiya, Seiki; Ando, Yoichi; Peets, Darren C.; Hardy, W. N.; Liang, Ruixing; Bonn, D. A.

doi:10.1140/epjst/e2010-01302-4

Cited by 40 publications

(72 citation statements)

References 85 publications

(114 reference statements)

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“…In NCCO (x = 0.17) an isolated peak appears at low energy and temperature accompanied by a suppression of spectral weight in the range between 200 and 800 cm −1 as already observed earlier by Koitzsch et al 63 In overdoped LSCO (x = 0.26) there is only an overall reduction of intensity in the entire range without any pile-up at low energies (see also Ref. 49). At temperatures above 200 K the spectral shapes become similar on both sides of half filling.…”

supporting

confidence: 71%

“…the bare bubble, has been used for the calculation of the Raman response. 32,33 Systematic studies in Y-123, Bi 2 Sr 2 CaCu 2 O 8+δ (Bi-2212), Tl 2 Ba 2 CuO 6+δ (Tl-2201), and LSCO show 49 that this approximation is too simple, in particular at lower doping. As demonstrated in Bi-2212 the collapse of the approximation appears to set in rather abruptly at n ∼ 0.79 (p ∼ 0.21) and has no direct correspondence in the singleparticle spectral function.…”

Section: A Overall Featuresmentioning

confidence: 99%

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Investigation of particle-hole asymmetry in the cuprates via electronic Raman scattering

et al. 2011

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In this paper we examine the effects of electron-hole asymmetry as a consequence of strong correlations on the electronic Raman scattering in the normal state of copper oxide high temperature superconductors. Using determinant quantum Monte Carlo simulations of the single-band Hubbard model, we construct the electronic Raman response from single particle Green's functions and explore the differences in the spectra for electron and hole doping away from half filling. The theoretical results are compared to new and existing Raman scattering experiments on hole-doped La2−xSrxCuO4 and electron-doped Nd2−xCexCuO4. These findings suggest that the Hubbard model with fixed interaction strength qualitatively captures the doping and temperature dependence of the Raman spectra for both electron and hole doped systems, indicating that the Hubbard parameter U does not need to be doping dependent to capture the essence of this asymmetry.

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confidence: 71%

Section: A Overall Featuresmentioning

confidence: 99%

Investigation of particle-hole asymmetry in the cuprates via electronic Raman scattering

et al. 2011

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“…Already the different energy ranges indicate that the gap-like phenomena in B 1g and B 2g symmetry cannot have the same origin. Apparently, the dichotomy between the energy ranges and 68). Hence, from the viewpoint of a very large set of Raman data the substantial loss of spectral weight both above and below T c is a peculiarity of the B 1g symmetry.…”

Section: B Interrelation Of B1g and B2g Spectramentioning

confidence: 99%

“…However, Tl-2201 has a hole-like Fermi surface at all doping levels as derived from both ARPES 71 and quantum oscillations 111 , and the data on Tl-2201 do not show significant differences to those of Bi-2212. Rather, the doping dependence on the overdoped side turns out to be quite universal 68 and the influence of the van Hove singularity on the superconducting Raman spectra is rather weak 65 . Finally, the quite complicated multi-sheeted Fermi surface of Y-123 seems to have only little influence on the spectra in the superconducting state.…”

Section: E Origin Of the B1g Modementioning

confidence: 99%

Pair breaking versus symmetry breaking: Origin of the Raman modes in superconducting cuprates

et al. 2011

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We performed Raman scattering experiments on superconductivity-induced features in Bi2Sr2(Ca1−xYx)Cu2O 8+δ (Bi-2212), YBa2Cu3O6+x (Y-123), and Tl2Ba2CuO 6+δ (Tl-2201) single crystals. The results in combination with earlier ones enable us to systematically analyze the spectral features in the doping range 0.07 ≤ p ≤ 0.24. In B2g (xy) symmetry we find universal spectra and the maximal gap energy ∆0 to scale with the superconducting transition temperature Tc. The B1g (x 2 − y 2 ) spectra in all three compounds show an anomalous increase of the intensity toward overdoping. The energy scale of the corresponding peak is neither related to the pairing energy nor to the pseudogap, but possibly stems from a symmetry breaking transition at the onset point of superconductivity at psc2 ≃ 0.27.

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“…High energy magnetic Raman scattering has been reported in hole doped superconductors [18,19,20,21,22,23,24] and electron-doped superconductors [25,26,27]. Many of them reported only the B 1g spectra, because the B 2g spectra are two-magnon scattering inactive.…”

Section: Introductionmentioning

confidence: 99%

Raman Studies of Anisotropic Magnetic Excitations in Fluctuating Nematic Striped La2−x Sr x CuO4 and the Comparison to Uniform Nd2−x Ce x CuO4

Sugai

Takayanagi

Hayamizu

et al. 2013

J Supercond Nov Magn

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The mechanism of the high temperature holedoped superconductivity was investigated by Raman scattering. The Raman selection rule is unique, so that anisotropic magnetic excitations in a fluctuating spincharge stripe can be detected as if it is static. We use different Raman selection rules for two kinds of magnetic Raman scattering processes, two-magnon scattering and high-energy electronic scattering. In order to confirm the difference, the Raman spectra of striped La 2−x Sr x CuO 4 (LSCO) and non-striped Nd 2−x Ce x CuO 4 (NCCO) were compared. The main results in LSCO are (1) magnetic excitations are presented by individual energy dispersions for the k|| stripe and the k ⊥ stripe, (2) the charge transfer is allowed only in the direction perpendicular to the stripe. The direction is the same as S. Sugai Department of Physics, Art and Science, Petroleum Institute, P.O. Box 2533, Abu Dhabi, UAE Tel.: +971-26075257 E-mail: ssugai@pi.ac.ae Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan Y. Takayanagi Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan N. Hayamizu Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan Y. Sone Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan N. Nakagawa Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan T. Muroi Department of Physics, Faculty of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan the Burgers vector of an edge dislocation. Hence we assume that a charge moves together with the edge dislocation of the charge stripe. The superconducting coherence length is close to the inter-charge stripe distance at x < 0.2. Therefore we propose a model that superconducting pairs are formed in the edge dislocations. The binding energy is related to the stripe formation energy.

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Electron interactions and charge ordering in CuO 2 compounds

Cited by 40 publications

References 85 publications

Investigation of particle-hole asymmetry in the cuprates via electronic Raman scattering

Investigation of particle-hole asymmetry in the cuprates via electronic Raman scattering

Pair breaking versus symmetry breaking: Origin of the Raman modes in superconducting cuprates

Raman Studies of Anisotropic Magnetic Excitations in Fluctuating Nematic Striped La2−x Sr x CuO4 and the Comparison to Uniform Nd2−x Ce x CuO4

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