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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 momentumspace (kspace) electronic structure underpinning the superconductivity has not yet been established. Here, we visualize the Q = 0 (intraunitcell) and Q ≠ 0 (densitywave) brokensymmetry states, simultaneously with the coherent kspace topology, for Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} samples spanning the phase diagram 0.06 ≤ p ≤ 0.23. We show that the electronic symmetrybreaking tendencies weaken with increasing p and disappear close to a critical doping p(c) = 0.19. Concomitantly, the coherent kspace topology undergoes an abrupt transition, from arcs to closed contours, at the same p(c). These data reveal that the kspace topology transformation in cuprates is linked intimately with the disappearance of the electronic symmetry breaking at a concealed critical point.
Original language  English 

Pages (fromto)  612616 
Number of pages  5 
Journal  Science 
Volume  344 
Issue number  6184 
DOIs  
Publication status  Published  9 May 2014 
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Dive into the research topics of 'Simultaneous transitions in cuprate momentumspace topology and electronic symmetry breaking'. Together they form a unique fingerprint.Projects
 1 Finished

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems
Wahl, P., Baumberger, F., Davis, J. C., Green, A., Hooley, C., Keeling, J. M. J. & Mackenzie, A.
1/09/11 → 31/08/17
Project: Standard