Nematicity in the pseudogap state of cuprate superconductors revealed by angle-resolved photoemission spectroscopy

Abstract

The nature of the pseudogap and its relationship with superconductivity are one of the central issues of cuprate superconductors. Recently, a possible scenario has been proposed that the pseudogap state is a distinct phase characterized by spontaneous rotational symmetry breaking called "nematicity" based on transport and magnetic susceptibility measurements, where the symmetry breaking was observed below the pseudogap temperature $T^{\ast }$. Here, we report a temperature-dependent ARPES study of nematicity in slightly overdoped Bi${}_{1.7}$Pb${}_{0.5}$Sr${}_{1.9}$CaCu${}_2$O${}_{8+\delta }$ triggered by a uniaxial strain applied along one of the Cu-O bond directions. While the nematicity was enhanced in the pseudogap state as in the previous studies, it was suppressed in the superconducting state. These results indicate that the pseudogap state is characterized by spontaneous rotational symmetry breaking and that the nematicity may compete with superconductivity. These new experimental insights may provide clues for the nature of the pseudogap and its relation to the superconductivity.

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Cited by in corpus (11)

• Unconventional density waves and superconductivities in Fe-based superconductors and other strongly correlated electron systems
• Discovery of Orbital Ordering in Bi2Sr2CaCu2O8+x
• Enhancement of superconductivity by electronic nematicity in cuprate superconductors
• Spin and bond-charge excitation spectra in correlated electron systems near antiferromagnetic phase
• Tracking the nematicity in cuprate superconductors: a resistivity study under uniaxial pressure
• Characteristic energy of the nematic-order state and its connection to enhancement of superconductivity in cuprate superconductors
• Coherence Length of Electronic Nematicity in Iron-Based Superconductors
• Boosting superconductivity in ultrathin YBa${}_2$Cu${}_3$O${}_{7-\delta }$ films via nanofaceted substrates
• Cluster dynamical mean field study of intra-unit-cell charge nematicity in hole-doped cuprates
• Engineering underdoped CuO${}_2$ nanoribbons in nm-thick $a$-axis YBa${}_2$Cu${}_3$O${}_{7-\delta }$ films
• Electromagnetic response of cuprate superconductors with coexisting electronic nematicity