Figure 5
Spin-orbital (a) and spin-charge (b) separation spectroscopic processes for a single spin chain with RIXS and ARPES, respectively. (c) RIXS intensity map of the dispersing two-spinon (and higher-order spinons) and orbiton excitations versus photon momentum transfer along the chains and photon energy transfer. (d) Illustration of the involved Cu 3d orbitals [Reproduced and adapted from Schlappa et al. (2012); and Schmitt et al. (2013), J. Electron Spectrosc. Relat. Phenom. 188, 38–46, Copyright (2013), with permission from Elsevier.] |