Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-02-25
Phys. Rev. Lett. 105, 177401 (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
Original: 4.5 pages. Replaced: 4 pages and 4 figures with updated content and references
Scientific paper
10.1103/PhysRevLett.105.177401
Results of model calculations using exact diagonalization reveal the orbital character of states associated with different Raman loss peaks in Cu $K$-edge resonant inelastic X-ray scattering (RIXS) from La$_{2}$CuO$_{4}$. The model includes electronic orbitals necessary to highlight non-local Zhang-Rice singlet, charge transfer and $d$-$d$ excitations, as well as states with apical oxygen 2$p_z$ character. The dispersion of these excitations is discussed with prospects for resonant final state wave-function mapping. A good agreement with experiments emphasizes the substantial multi-orbital character of RIXS profiles in the energy transfer range 1-6 eV.
Chabot-Couture Guillaume
Chen Chian-Chou
Devereaux Thomas P.
Elfimov Ilya
Greven Martin
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