类型 方法 频次 2 别名 139La nuclear magnetic resonance (NMR) 相关论文 Multiband Metallic Ground State in Multilayered Nickelates La3Ni2O7 and La4Ni3O10 Probed by 139La-NMR at Ambient Pressure Pressure-enhanced spin-density-wave transition in double-layer nickelate La3Ni2O7−δ