Universality of the {\bf q}=1/2 Orbital Magnetism in the Pseudogap Phase of the High-$T_c$ superconductor $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$

Abstract

Several decades of debate have centered around the nature of the enigmatic pseudo-gap state in high temperature superconducting copper oxides. Recently, we reported polarized neutron diffraction measurements that suggested the existence of a magnetic texture bound to the pseudo-gap phase [Bounoua, {\it et al}. Communications Physics 5, 268 (2022)]. Such a magnetic texture is likely to involve the spontaneous appearance of loop currents within the CuO${}_2$ unit cells, which give birth to complex correlated patterns. In the underdoped $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6.6}$, the magnetic structure factor of such an orbital magnetic texture gives rise to two distinct magnetic responses at {\bf q}=0 and {\bf q}=1/2. As this pattern alters the lattice translation invariance, such a state of matter could contribute to an instability of the Fermi surface. Here, we report polarized neutron scattering measurements on a nearly optimally doped high quality single crystal of $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6.9}$ that exhibits the same {\bf q}=1/2 magnetism and a weakly overdoped $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_7$ sample where this signal is no longer sizeable. The in-plane and out-of-plane magnetic neutron scattering intensities in $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6.9}$ (at {\bf q}=1/2) and $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6.85}$ (at {\bf q}=0), reported previously, display the same temperature dependent hallmarks. The magnitudes of both {\bf q}=0 and {\bf q}=1/2 magnetic signals further exhibit the same trends upon doping in $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$, confirming that they are likely intertwined.

arXiv commentsupplemental information + 6 figures

References in corpus (29)

• Antiferromagnetic order and spin dynamics in iron-based superconductors
• Magnetic order in the pseudogap phase of high-$T_C$ superconductors
• A Theory of the Pseudogap State of the Cuprates
• Evaluation of CuO2 plane hole doping in YBa2Cu3O6+x single crystals
• The remarkable underlying ground states of cuprate superconductors
• Resonant X-ray Scattering Study of Charge Density Wave Correlations in YBa${}_2$Cu${}_3$O${}_{6+x}$
• Simultaneous Transitions in Cuprate Momentum-Space Topology and Electronic Symmetry Breaking
• Linear in Temperature Resistivity and Associated Mysteries
• Observation of Magnetic Order in a $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6.6}$ Superconductor
• Novel magnetic order in pseudogap state of high Tc copper oxides superconductors
• On the Electron Pairing Mechanism of Copper-Oxide High Temperature Superconductivity
• Magnetic quantum oscillations in YBa${}_2$Cu${}_3$O${}_{6.61}$ and YBa${}_2$Cu${}_3$O${}_{6.69}$ in fields of up to 85 T; patching the hole in the roof of the superconducting dome
• Intra-Unit-Cell magnetic correlations near optimal doping in $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6.85}$
• 2D orbital-like magnetic order in $\mathrm{L}{\mathrm{a}}_{2-\mathrm{x}}\mathrm{S}{\mathrm{r}}_{\mathrm{x}}\mathrm{Cu}{\mathrm{O}}_4$
• Evidence for competing magnetic instabilities in underdoped $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$
• Evidence for Intra-Unit-Cell magnetic order in Bi2Sr2CaCu2O8+d
• Intertwining topological order and broken symmetry in a theory of fluctuating spin density waves
• Highly anisotropic anomaly in the dispersion of the copper-oxygen bond-bending phonon in superconducting YBa2Cu3O7 from inelastic neutron scattering
• Orbital currents in insulating and doped antiferromagnets
• Comment on "No Evidence for Orbital Loop Currents in Charge Ordered $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6+\mathrm{x}}$ from Polarized Neutron Diffraction"
• Orientation of the intra-unit-cell magnetic moment in the high-Tc superconductor HgBa2CuO${}_{4+\delta }$
• Quantum Spin Excitations through the metal-to-insulator crossover in $YB{a}_{2}C{u}_3{O}_{6+y}$
• Pseudogap and Fermi-arcs in underdoped cuprates
• Theory of Polarized Neutron Scattering in the Loop Ordered Phase of Cuprates
• Reversible magnetization and critical fluctuations in systematically doped YBa${}_2$Cu${}_3$O${}_{7-\delta }$ single crystals
• Loop Currents in Two-leg Ladder Cuprates
• Hidden Magnetic Texture in the Pseudogap Phase of High-Tc $YB{a}_{2}C{u}_3{O}_{6.6}$
• Incipient loop current order in the under-doped cuprate superconductors
• Muon Spin Relaxation and fluctuating magnetism in the pseudogap phase of YBa${}_2$Cu${}_3$O${}_y$

Cited by in corpus (2)

• Superconductivity due to fluctuating loop currents
• Orbital current signature using neutron diffraction