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Ordering Phenomena in Cuprates

Part of the Advances in Solid State Physics book series (ASSP,volume 45)

Abstract

Results of light-scattering experiments in Bi2Sr2CaCu2O8+δ (Bi-2212), La2–xSrxCuO4 (LSCO), and YBa2Cu3O6+x (Y-123) single crystals are presented. The emphasis is placed on the low doping range where the evolution of the metallic state from the antiferromagnetic one is studied. Along the diagonals of the CuO2 planes the response is metallic even at small doping levels well below p = 0.05 where superconductivity disappears. In contrast, along the principal axes the carriers exhibit insulator-like characteristics up to approximately p=0.21. In the underdoped range charge-ordering fluctuations are observed manifesting themselves as quasielastic peaks at low temperatures. The symmetries at which the new response is found are compatible with the neutron results on the spin system. Possible connections between the localization phenomena, the pseudogap and the charge and spin-ordering instabilities as well as the implications for superconductivity are discussed.

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Hackl, R. et al. Ordering Phenomena in Cuprates. In: Kramer, B. (eds) Advances in Solid State Physics. Advances in Solid State Physics, vol 45. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11423256_18

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  • DOI: https://doi.org/10.1007/11423256_18

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-26041-7

  • Online ISBN: 978-3-540-32430-0

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