Simultaneous transitions in cuprate momentum-space topology and electronic symmetry breaking

K Fujita, Chung Koo Kim, Inhee Lee, Jinho Lee, M H Hamidian, I A Firmo, S Mukhopadhyay, H Eisaki, S Uchida, M J Lawler, E -A Kim, J C Davis

Research output: Contribution to journalArticlepeer-review

202 Citations (Scopus)

Abstract

The existence of electronic symmetry breaking in the underdoped cuprates and its disappearance with increased hole density p are now widely reported. However, the relation between this transition and the momentum-space (k-space) electronic structure underpinning the superconductivity has not yet been established. Here, we visualize the Q = 0 (intra-unit-cell) and Q ≠ 0 (density-wave) broken-symmetry states, simultaneously with the coherent k-space topology, for Bi2Sr2CaCu2O8+δ samples spanning the phase diagram 0.06 ≤ p ≤ 0.23. We show that the electronic symmetry-breaking tendencies weaken with increasing p and disappear close to a critical doping p(c) = 0.19. Concomitantly, the coherent k-space topology undergoes an abrupt transition, from arcs to closed contours, at the same p(c). These data reveal that the k-space topology transformation in cuprates is linked intimately with the disappearance of the electronic symmetry breaking at a concealed critical point.
Original languageEnglish
Pages (from-to)612-616
Number of pages5
JournalScience
Volume344
Issue number6184
DOIs
Publication statusPublished - 9 May 2014

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