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We study the electronic properties of the$\textrm{Fe}\textrm{Se}_{1-x}\textrm{Te}_x$ system ($x=0$, 0.25, 0.5, 0.75, and1) from the perspective of X-ray spectroscopy and density functional theory(DFT). The analysis performed on the density of states reveals markeddifferences in the distribution of the $5p$ states of Te for $x>0$. We thinkthat this finding can be associated with the fact that superconductivity issuppressed in FeTe. Moreover, using resonant inelastic X-ray scattering, weestimate the spin state of our system which can be correlated to the magneticorder. We find that the spin state of the$\textrm{Fe}\textrm{Se}_{1-x}\textrm{Te}_x$ system fluctuates, as a function of$x$, between $S=0$ and $S=2$ with Fe in FeSe in the highest spin state.Finally, our DFT calculations nicely reproduce the X-ray emission spectraperformed at the Fe $L$-edge (which probe the occupied states) and suggest thatthe $\textrm{Fe}\textrm{Se}_{1-x}\textrm{Te}_x$ system can be considered atmost as a moderately correlated system.

Electronic Structure of $\textrm{Fe}\textrm{Se}_{1-x}\textrm{Te}_x$ Studied by X-ray Spectroscopy and Density Functional Theory