Fig. 2: Emergence of quantum well states from the electron pocket at \(\overline{\varGamma }\).
From: Emergence of quantum confinement in topological kagome superconductor CsV3Sb5
a Fermi surface mapping of CsV3Sb5 measured with \(77\,{eV}\) photons at \(17\,{{{{{\rm{K}}}}}}\). b Band structure measured along the \(\bar{\Gamma }-\bar{{{{{{\rm{K}}}}}}}\) direction marked in (a) by the black solid line. c The second derivative image of b. d EDCs stack plot of (b) with the black arrows in (b) and (d) marking the momentum region and direction. Red, blue, and green tips mark the peak position of the three bands around \(\bar{\Gamma }\) that are also plotted in (c) by the red, blue and green dashed lines. e–g Same as a–c but measured at \(120\,{{{{{\rm{K}}}}}}\), above the CDW transition temperature.
