TY - JOUR
T1 - Anisotropic electronic correlations in the spin density wave state of La3Ni2O7
AU - He, Ge
AU - Shen, Jun
AU - Xie, Shiyu
AU - Zhang, Haotian
AU - Huo, Mengwu
AU - Shu, Jun
AU - Hu, Deyuan
AU - Zhou, Xiaoxiang
AU - Zhang, Yanmin
AU - Qin, Lei
AU - Qiao, Liangxin
AU - Liu, Hengjie
AU - Hu, Chuansheng
AU - Dong, Xijie
AU - Wang, Dengjing
AU - Liu, Jun
AU - Hu, Wei
AU - Yuan, Jie
AU - Yan, Yajun
AU - Qi, Zeming
AU - Jin, Kui
AU - Du, Zengyi
AU - Wang, Meng
AU - Feng, Dong Lai
N1 - Publisher Copyright:
© The Author(s) 2026.
PY - 2026/12
Y1 - 2026/12
N2 - The bilayer nickelate superconductor La3Ni2O7undergoes a density wave transition near 150 K that has attracted intensive scrutiny, yet its microscopic origin remains elusive. Here we report polarization-resolved electronic Raman scattering measurements on high-quality single crystals of La3Ni2O7. Below 150 K, we observe a pronounced, symmetry-dependent redistribution of spectral weight in B1gand B2gchannels, consistent with the formation of spin-density-wave (SDW) gaps. Quantitative analysis reveals momentum-selective SDW gap amplitudes, with intermediate-to-strong coupling near X/Y points of the Brillouin zone and weaker coupling along the diagonal direction, indicating an unconventional SDW driven by anisotropic electronic correlations. Our results establish the electronic character of the SDW in La3Ni2O7, and provide a microscopic foundation for understanding the emergence of high-temperature superconductivity under pressure in nickelates.
AB - The bilayer nickelate superconductor La3Ni2O7undergoes a density wave transition near 150 K that has attracted intensive scrutiny, yet its microscopic origin remains elusive. Here we report polarization-resolved electronic Raman scattering measurements on high-quality single crystals of La3Ni2O7. Below 150 K, we observe a pronounced, symmetry-dependent redistribution of spectral weight in B1gand B2gchannels, consistent with the formation of spin-density-wave (SDW) gaps. Quantitative analysis reveals momentum-selective SDW gap amplitudes, with intermediate-to-strong coupling near X/Y points of the Brillouin zone and weaker coupling along the diagonal direction, indicating an unconventional SDW driven by anisotropic electronic correlations. Our results establish the electronic character of the SDW in La3Ni2O7, and provide a microscopic foundation for understanding the emergence of high-temperature superconductivity under pressure in nickelates.
UR - https://www.scopus.com/pages/publications/105045174981
U2 - 10.1038/s41467-026-72810-0
DO - 10.1038/s41467-026-72810-0
M3 - Article
C2 - 42106343
AN - SCOPUS:105045174981
SN - 2041-1723
VL - 17
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 6272
ER -