Observation of an electronic order along [110] direction in FeSe

• DOI: 10.1038/s41467-021-21318-w
• Publication Date: 2021-03-02T11:04:56Z
• Authors: Kunliang Bu; Wenhao Zhang; Ying Fei; Yuan Zheng; Fangzhou Ai; Zongxiu Wu; Qisi Wang; Hongliang Wo; Jun Zhao; Yi Yin
• Keywords: Lattice (music); Checkerboard

Abstract Multiple ordered states have been observed in unconventional superconductors. Here, we apply scanning tunneling microscopy to probe the intrinsic FeSe, structurally simplest iron-based superconductor. Besides well-known nematic order along [100] direction, observe a checkerboard charge iron lattice, which name [110] electronic FeSe. The is robust at 77 K, accompanied with rather weak order. At 4.5 enhanced, while forms domains reduced correlation length. In addition, collective gaped around [−40, 40] meV K. observation of this exotic may shed new light on origin