cond-mat.supr-con
Revealing nanoscale structural phase separation in La$_{3}$Ni$_{2}$O$_{7-δ}$ single crystal via scanning near-field optical microscopy
Xiaoxiang Zhou Weihong He Zijian Zhou Kaipeng Ni Mengwu Huo Deyuan Hu Yinghao Zhu Enkang Zhang Zhicheng Jiang Shuaikang Zhang Shiwu Su Juan Jiang Yajun Yan Yilin Wang Dawei Shen Xue Liu Jun Zhao Meng Wang Mengkun Liu Zengyi Du Donglai Feng