Anomalous spectral weight transfer in the nematic state of iron-selenide superconductor

Cai C¹, Han T T¹, Wang Z G¹, Chen L¹, Wang Y D¹, Xin Z M¹, Ma M W¹, Li Yuan^{1, 2}, Zhang Y^{1, 2, †}

(a) Fermi surface mapping taken at 95 K above T_nem. (b) Schematic drawing of the Fermi surface around the M point for the data shown in panel (a). (c) Fermi surface mappings taken at 15 K in twinned sample (left panel), stretched sample (middle panel), and pressed sample (right panel). (d) Schematic drawing of the Fermi surface around the M point for the data shown in panel (c).