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

N. Munnikes; B. Muschler; F. Venturini; L. Tassini; W. Prestel; Shimpei Ono; Yoichi Ando; D. C. Peets; W. N. Hardy; Ruixing Liang; D. A. Bonn; A. Damascelli; H. Eisaki; M. Greven; A. Erb; R. Hackl

doi:10.1103/PhysRevB.84.144523

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

N. Munnikes, B. Muschler, F. Venturini, L. Tassini, W. Prestel, Shimpei Ono, Yoichi Ando, D. C. Peets, W. N. Hardy, Ruixing Liang, D. A. Bonn, A. Damascelli, H. Eisaki, M. Greven, A. Erb, R. Hackl

Physics and Astronomy (Twin Cities)

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Abstract

We performed Raman scattering experiments on superconductivity-induced features in Bi₂Sr₂(Ca_1-xY_x)Cu ₂O_8+δ (Bi-2212), YBa₂Cu₃O _6+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 B_2g (xy) symmetry, we find universal spectra and the maximal gap energy Δ₀ to scale with the superconducting transition temperature T_c. The B_1g (x2-y2) 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 p_sc20.27.

Original language	English (US)
Article number	144523
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	84
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.84.144523
State	Published - Oct 28 2011

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10.1103/PhysRevB.84.144523

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Munnikes, N., Muschler, B., Venturini, F., Tassini, L., Prestel, W., Ono, S., Ando, Y., Peets, D. C., Hardy, W. N., Liang, R., Bonn, D. A., Damascelli, A., Eisaki, H., Greven, M., Erb, A., & Hackl, R. (2011). Pair breaking versus symmetry breaking: Origin of the Raman modes in superconducting cuprates. Physical Review B - Condensed Matter and Materials Physics, 84(14), Article 144523. https://doi.org/10.1103/PhysRevB.84.144523

Munnikes, N, Muschler, B, Venturini, F, Tassini, L, Prestel, W, Ono, S, Ando, Y, Peets, DC, Hardy, WN, Liang, R, Bonn, DA, Damascelli, A, Eisaki, H, Greven, M, Erb, A & Hackl, R 2011, 'Pair breaking versus symmetry breaking: Origin of the Raman modes in superconducting cuprates', Physical Review B - Condensed Matter and Materials Physics, vol. 84, no. 14, 144523. https://doi.org/10.1103/PhysRevB.84.144523

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abstract = "We performed Raman scattering experiments on superconductivity-induced features in Bi2Sr2(Ca1-xYx)Cu 2O8+δ (Bi-2212), YBa2Cu3O 6+x (Y-123), and Tl2Ba2CuO6+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 Δ0 to scale with the superconducting transition temperature Tc. The B1g (x2-y2) 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 psc20.27.",

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AU - Munnikes, N.

AU - Muschler, B.

AU - Venturini, F.

AU - Tassini, L.

AU - Prestel, W.

AU - Ono, Shimpei

AU - Ando, Yoichi

AU - Peets, D. C.

AU - Hardy, W. N.

AU - Liang, Ruixing

AU - Bonn, D. A.

AU - Damascelli, A.

AU - Eisaki, H.

AU - Greven, M.

AU - Erb, A.

AU - Hackl, R.

PY - 2011/10/28

Y1 - 2011/10/28

N2 - We performed Raman scattering experiments on superconductivity-induced features in Bi2Sr2(Ca1-xYx)Cu 2O8+δ (Bi-2212), YBa2Cu3O 6+x (Y-123), and Tl2Ba2CuO6+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 Δ0 to scale with the superconducting transition temperature Tc. The B1g (x2-y2) 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 psc20.27.

AB - We performed Raman scattering experiments on superconductivity-induced features in Bi2Sr2(Ca1-xYx)Cu 2O8+δ (Bi-2212), YBa2Cu3O 6+x (Y-123), and Tl2Ba2CuO6+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 Δ0 to scale with the superconducting transition temperature Tc. The B1g (x2-y2) 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 psc20.27.

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

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