Fig. 3: ARPES measurement of Si/Ag(001).
From: Observation of gapped Dirac cones in a two-dimensional Su-Schrieffer-Heeger lattice
a, b ARPES intensity plots of Si/Ag(001) at binding energies of 0.6 and 0.8 eV, respectively. The red lines in a indicate the momentum cuts where (e–j) are taken. c, d The same as a and b but for pristine Ag(001). e–j ARPES intensity plots along Cuts 1-4 indicated in a. The black and blue dashed squares in a–d indicate the BZs of Ag(001) and Si, respectively. The black arrows in panels a, b indicate the appearance of gapped Dirac cones. The blue arrows in a–f indicate the bulk bands of Ag(001).
