Microscopic evidence of charge- and spin-density waves in La${}_3$Ni${}_2$O${}_{7-\delta }$ revealed by ${}^{139}$La-NQR

Abstract

The recent discovery of superconductivity in La${}_3$Ni${}_2$O${}_{7-\delta }$ with a transition temperature $T_c$ close to 80 K at high pressures has attracted significant attention, due particularly to a possible density wave (DW) transition occurring near the superconducting dome. Identifying the type of DW order is crucial for understanding the origin of superconductivity in this system. However, owing to the presence of La${}_4$Ni${}_3$O${}_{10}$ and other intergrowth phases in La${}_3$Ni${}_2$O${}_{7-\delta }$ samples, extracting the intrinsic information from the La${}_3$Ni${}_2$O${}_7$ phase is challenging. In this study, we employed ${}^{139}$La nuclear quadrupole resonance (NQR) measurements to eliminate the influence of other structural phases in the sample and obtain microscopic insights into the DW transition in La${}_3$Ni${}_2$O${}_{7-\delta }$. Below the DW transition temperature $T_{\mathrm{DW}}\sim$ 153K, we observe a distinct splitting in the $\pm$ 5/2 $\leftrightarrow$ $\pm$ 7/2 transition of the NQR resonance peak at the La(2) site, while only a line broadening is seen in the $\pm$ 3/2 $\leftrightarrow$ $\pm$ 5/2 transition peak. Through further analysis of the spectra, we show that the line splitting is due to a unidirectional charge modulation. A magnetic line broadening is also observed below $T_{\mathrm{DW}}$, accompanied by a large enhancement of the spin-lattice relaxation rate, indicating the formation of magnetically ordered moments in the DW state. Our results suggest a simultaneous formation of charge- and spin-density wave order in La${}_3$Ni${}_2$O${}_{7-\delta }$ , thereby offering critical insights into the electronic correlations in Ni-based superconductors.

16 pages, 5 figures

References in corpus (24)

• Superconductivity near 80 Kelvin in single crystals of La3Ni2O7 under pressure
• High-temperature superconductivity with zero-resistance and strange metal behavior in La${}_3$Ni${}_2$O${}_{7-\delta }$
• Orbital-Dependent Electron Correlation in Double-Layer Nickelate La3Ni2O7
• Evidence for charge and spin order in single crystals of La${}_3$Ni${}_2$O${}_7$ and La${}_3$Ni${}_2$O${}_6$
• AV${}_3$Sb${}_5$ Kagome Superconductors: Progress and Future Directions
• Pressure-induced superconductivity in polycrystalline La3Ni2O7
• Electronic and magnetic excitations in La${}_3$Ni${}_2$O${}_7$
• Electronic correlations and partial gap in the bilayer nickelate La${}_3$Ni${}_2$O${}_7$
• Structure responsible for the superconducting state in La3Ni2O7 at high pressure and low temperature conditions
• Normal and superconducting properties of La${}_3$Ni${}_2$O${}_7$
• Possible star-of-David pattern charge density wave with additional modulation in the kagome superconductor CsV${}_3$Sb${}_5$
• Neutron Scattering Studies on the High-$T_c$ Superconductor La${}_3$Ni${}_2$O${}_{7-\delta }$ at Ambient Pressure
• Pressure-enhanced spin-density-wave transition in double-layer nickelate $L{a}_{3}N{i}_2{O}_{7-\delta }$
• Multiband Metallic Ground State in Multilayered Nickelates La${}_3$Ni${}_2$O${}_7$ and La${}_4$Ni${}_3$O${}_{10}$ Probed by ${}^{139}$La-NMR at Ambient Pressure
• Pressure-enhanced splitting of density wave transitions in La${}_3$Ni${}_2$O${}_{7-\delta }$
• Spin stripe order in a square planar trilayer nickelate
• NMR Evidence of Antiferromagnetic Spin Fluctuations in Nd${}_{0.85}$Sr${}_{0.15}$NiO${}_2$
• Locally commensurate charge-density wave with three-unit-cell periodicity in YBCO
• Commensurate-to-incommensurate transition of charge-density-wave order and a possible quantum critical point in pressurized kagome metal CsV${}_3$Sb${}_5$
• Antiferromagnetic Ground State, Charge Density Waves and Oxygen Vacancies Induced Metal-Insulator Transition in Pressurized La${}_3$Ni${}_2$O${}_7$
• Optical properties and electronic correlations in La${}_3$Ni${}_2$O${}_7$ bilayer nickelates under high pressure
• Electronic instability, layer selectivity and Fermi arcs in La${}_3$Ni${}_2$O${}_7$
• Strain-induced long-range charge-density wave order in the optimally doped Bi${}_2$Sr${}_{2-x}$La${}_x$CuO${}_6$ superconductor
• Fermi Liquid near a q=0 Charge Quantum Critical Point

Cited by in corpus (9)

• Bulk superconductivity up to 96 K in pressurized nickelate single crystals
• Recent progress in nickelate superconductors
• $t$-$J$ model for strongly correlated two-orbital systems: Application to bilayer nickelate superconductors
• Unifying Strain-driven and Pressure-driven Superconductivity in La${}_3$Ni${}_2$O${}_7$: Suppressed charge/spin density waves and enhanced interlayer coupling
• Unified mechanism of charge-density-wave and high-$T_c$ superconductivity protected from oxygen vacancies in bilayer nickelates
• Impact of multiband effects on non-Fermi-liquid transport phenomena in bilayer nickelates
• Cryogenic spin 3/2 nuclear quadrupole resonance: Spin relaxation and electric field gradient via Rabi frequency goniometry
• Spin Fluctuations in the Rare-Earth Doped Bilayer Nickelates
• Intertwined Charge and Spin Density Waves in Trilayer Nickelate La${}_4$Ni${}_3$O${}_{10}$ Revealed by ${}^{139}$La NQR