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  Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-Ray Scattering

Minola, M., Lu, Y., Peng, Y. Y., Dellea, G., Gretarsson, H., Haverkort, M. W., et al. (2017). Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-Ray Scattering. Physical Review Letters, 119(9): 097001, pp. 1-6. doi:10.1103/PhysRevLett.119.097001.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F1D0-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-F1D2-0
Genre: Journal Article

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 Creators:
Minola, M.1, Author
Lu, Y.1, Author
Peng, Y. Y.1, Author
Dellea, G.1, Author
Gretarsson, H.1, Author
Haverkort, M. W.2, Author              
Ding, Y.1, Author
Sun, X.1, Author
Zhou, X. J.1, Author
Peets, D. C.1, Author
Chauviere, L.1, Author
Dosanjh, P.1, Author
Bonn, D. A.1, Author
Liang, R.1, Author
Damascelli, A.1, Author
Dantz, M.1, Author
Lu, X.1, Author
Schmitt, T.1, Author
Braicovich, L.1, Author
Ghiringhelli, G.1, Author
Keimer, B.1, AuthorLe Tacon, M.1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Maurits Haverkort, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863455              

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 Abstract: Spin excitations in the overdoped high temperature superconductors Tl2Ba2CuO6+delta and (Bi,Pb)(2)(Sr,La)(2)CuO6+delta were investigated by resonant inelastic x-ray scattering (RIXS) as functions of doping and detuning of the incoming photon energy above the Cu-L-3 absorption peak. The RIXS spectra at optimal doping are dominated by a paramagnon feature with peak energy independent of photon energy, similar to prior results on underdoped cuprates. Beyond optimal doping, the RIXS data indicate a sharp crossover to a regime with a strong contribution from incoherent particle-hole excitations whose maximum shows a fluorescencelike shift upon detuning. The spectra of both compound families are closely similar, and their salient features are reproduced by exact-diagonalization calculations of the single-band Hubbard model on a finite cluster. The results are discussed in the light of recent transport experiments indicating a quantum phase transition near optimal doping.

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Language(s): eng - English
 Dates: 2017-09-012017-09-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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Title: Physical Review Letters
  Abbreviation : Phys. Rev. Lett.
Source Genre: Journal
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Publ. Info: Woodbury, N.Y. : American Physical Society
Pages: - Volume / Issue: 119 (9) Sequence Number: 097001 Start / End Page: 1 - 6 Identifier: ISSN: 0031-9007
CoNE: /journals/resource/954925433406_1