Collapse of the Pseudogap in Cuprate Superconductors at a Lifshitz Transition

Abstract : We report a fine tuned doping study of strongly overdoped Bi2Sr2CaCu2O8þδ single crystals using electronic Raman scattering. Combined with theoretical calculations, we show that the doping, at which the normal-state pseudogap closes, coincides with a Lifshitz quantum phase transition where the active holelike Fermi surface becomes electronlike. This conclusion suggests that the microscopic cause of the pseudogap is sensitivetotheFermi surfacetopology.Furthermore,we findthatthe superconductingtransitiontemperatureis unaffected by this transition, demonstrating that their origins are different on the overdoped side.
Document type :
Journal articles
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01365910
Contributor : Dominique Girard <>
Submitted on : Tuesday, September 13, 2016 - 5:09:49 PM
Last modification on : Tuesday, May 28, 2019 - 3:40:08 PM

Links full text

Identifiers

Citation

S. Benhabib, A. Sacuto, M. Civelli, I. Paul, M. Cazayous, et al.. Collapse of the Pseudogap in Cuprate Superconductors at a Lifshitz Transition. Physical Review Letters, American Physical Society, 2015, 114 (14), ⟨10.1103/PhysRevLett.114.147001⟩. ⟨cea-01365910⟩

Share

Metrics

Record views

258