Three energy scales in the superconducting state of hole-doped cuprates detected by electronic Raman scattering
Journal Article
·
· Physical Review. B, Condensed Matter and Materials Physics
- Univ. Paris Diderot-Paris, Paris Cedex (France)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Service de Physique de l'Etat Condense, Gif-sur-Yvette (France)
We explore by electronic Raman scattering the superconducting state of the Bi2Sr2CaCu2O8+δ (Bi-2212) crystal by performing a fine-tuned doping study. We find three distinct energy scales in A1g, B1g, and B2g symmetries which show three distinct doping dependencies. Above p=0.22, the three energies merge; below p=0.12, the A1g scale is no longer detectable, while the B1g and B2g scales become constant in energy. In between, the A1g and B1g scales increase monotonically with underdoping, while the B2g one exhibits a maximum at p=0.16. The three superconducting energy scales appear to be a universal feature of hole-doped cuprates. Furthermore, we propose that the nontrivial doping dependencies of the three scales originate from the Fermi-surface changes and reveal competing orders inside the superconducting dome.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- OSTI ID:
- 1235854
- Report Number(s):
- BNL--111600-2015-JA; KC0201060
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 13 Vol. 92; ISSN 1098-0121; ISSN PRBMDO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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