Three energy scales in the superconducting state of hole-doped cuprates detected by electronic Raman scattering

Benhabib, S.; Gu, G. D.; Gallais, Y.; Cazayous, M.; Measson, M. -A.; Zhong, R. D.; Schneeloch, J.; Forget, A.; Colson, D.; Sacuto, A.

doi:10.1103/PhysRevB.92.134502

Title: Three energy scales in the superconducting state of hole-doped cuprates detected by electronic Raman scattering

Journal Article · Tue Oct 06 00:00:00 EDT 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.92.134502· OSTI ID:1235854

Benhabib, S. ^[1]; Gu, G. D. ^[2]; Gallais, Y. ^[1]; Cazayous, M. ^[1]; Measson, M. -A. ^[1]; Zhong, R. D. ^[2]; Schneeloch, J. ^[2]; Forget, A. ^[3]; Colson, D. ^[3]; Sacuto, A. ^[1]

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 Bi₂Sr₂CaCu₂O_8+δ (Bi-2212) crystal by performing a fine-tuned doping study. We find three distinct energy scales in A_1g, B_1g, and B_2g symmetries which show three distinct doping dependencies. Above p=0.22, the three energies merge; below p=0.12, the A_1g scale is no longer detectable, while the B_1g and B_2g scales become constant in energy. In between, the A_1g and B_1g scales increase monotonically with underdoping, while the B_2g 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.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1235854

Report Number(s):: BNL-111600-2015-JA; PRBMDO; R&D Project: PO010; KC0201060

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 13; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 9 works

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