Simultaneous Transitions in Cuprate Momentum-Space Topology and Electronic Symmetry Breaking

    loading  Checking for direct PDF access through Ovid


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 (JOURNAL/scie/04.02/00007529-201405090-00036/ENTITY_OV0281/v/2017-09-12T051156Z/r/image-png-space) electronic structure underpinning the superconductivity has not yet been established. Here, we visualize the JOURNAL/scie/04.02/00007529-201405090-00036/ENTITY_OV0423/v/2017-09-12T051156Z/r/image-png = 0 (intra—unit-cell) and JOURNAL/scie/04.02/00007529-201405090-00036/ENTITY_OV0423/v/2017-09-12T051156Z/r/image-png ≠ 0 (density-wave) broken-symmetry states, simultaneously with the coherent JOURNAL/scie/04.02/00007529-201405090-00036/ENTITY_OV0281/v/2017-09-12T051156Z/r/image-png-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 JOURNAL/scie/04.02/00007529-201405090-00036/ENTITY_OV0281/v/2017-09-12T051156Z/r/image-png-space topology undergoes an abrupt transition, from arcs to closed contours, at the same pc. These data reveal that the JOURNAL/scie/04.02/00007529-201405090-00036/ENTITY_OV0281/v/2017-09-12T051156Z/r/image-png-space topology transformation in cuprates is linked intimately with the disappearance of the electronic symmetry breaking at a concealed critical point.

Related Topics

    loading  Loading Related Articles