The lattice structure and spin excitation spectra of La3Ni2O7-δ (IMAGE)
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The lattice structure and spin excitation spectra of powder La3Ni2O7-δ
（a）The lattice structure of La3Ni2O7-δ；（b）The momentum dependence of the dynamical susceptibility χ’’ within E = [2.5, 3.5] meV;（c）The subtraction of the low- and high-temperature spin excitations；（d）and（e）The schematic of single spin-charge stripe AFM order and the calculated spin-excitation spectrum from SpinW with SJ2 = 3.0, SJ3 = 1.7, and SJ⊥ = 57.5 meV；（f）and（g）The schematic of double spin stripe AFM order and the calculated spin-excitation spectrum from SpinW with SJ3 = 3.6, and SJ⊥ = 63.9 meV.
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