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

178 Scopus citations

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 pc = 0.19. Concomitantly, the coherent k -space topology undergoes an abrupt transition, from arcs to closed contours, at the same pc. 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
StatePublished - 2014

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