Intertwined charge and spin density waves in trilayer nickelate La4Ni3O10 revealed by La139 NQR
Jie Dou, Feiyu Li, Mingxin Zhang, Jun Luo, Shuo Li, Aifang Fang, Jie Yang, Yanpeng Qi, Junjie Zhang, Rui Zhou
DOI 10.1103/5n3k-gtn9 · Physical Review B
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Abstract
The discovery of superconducting transitions in pressurized La3Ni2O7 and La4Ni3O10 has highlighted the pivotal role of density wave (DW) orders in nickelate superconductors. To gain a comprehensive understanding of the superconducting state, it is essential to elucidate the nature of the DW order. In this study, we utilized La139 nuclear quadrupole resonance (NQR) to investigate the charge-density wave (CDW) and spin-density wave (SDW) orders in both single-crystal and polycrystalline La4Ni3O10. Near TDW≈133K, an abrupt change in both the linewidth and frequency of the La(2) site in the single-crystal sample provides compelling evidence for a first-order-like phase transition. The pronounced broadening of the NQR lines indicates the incommensurate nature of the DW order. Furthermore, the spin-lattice relaxation rate divided by temperature 1/T1T exhibits a strong enhancement at TDW, indicating the strong spin fluctuations above the first-order DW transition. These observations suggest an intricate interplay between incommensurate CDW and SDW orders. Our findings offer critical insights into the microscopic mechanisms of the DW state in La4Ni3O10 and establish an essential framework for exploring the interplay between DW and superconducting phases in nickelate superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La3Ni2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La4Ni3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| La4Ni3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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