Crystal-field spectrum of R1-yCayBa2Cu3Ox high-Tc superconductors in the overdoped regime

A. Mirmelstein, A. Podlesnyak, V. Bobrovskii, N. Golosova

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Recent inelastic neutron scattering measurements revealed the crystal-field spectra of the overdoped R1-yCayBa2Cu3O≃7 (R=Ho, Er;0 < y < 0.2) high-Tc superconductors to consist of two spectral components associated with the optimally doped and the overdoped domains, respectively. Increase of the Ca concentration does not affect the local charge density of domains, but changes the spectral weight of the components. In the sense of this 'two-phase' picture, which was established earlier for the underdoped region, there is a smooth crossover between the underdoped and overdoped parts of the phase diagram. However, these two regions are characterized by a qualitatively different type of in-plane charge distribution.

Original languageEnglish
Pages (from-to)S1019-S1021
JournalApplied Physics A: Materials Science and Processing
Volume74
Issue numberSUPPL.II
DOIs
StatePublished - Dec 2002
Externally publishedYes

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