Scanning Tunneling Microscopy and Spectroscopy of Fe[H$_2$B(Pz)$_2$]$_2$(bipy) Spin-Crossover Complex on Au(111)

Spin crossover compounds have externally-tunable magnetic moments that will be useful for spintronic applications if they result in correspondingly tunable electronic properties. In order to assess this electronic tunability, we have performed variable temperature scanning tunneling microscopy and spectroscopy on a known Fe(II) spin crossover compound, Fe[H$_2$B(Pz)$_2$]$_2$(bipy), thermally-evaporated onto a single crystal Au(111) surface. We report on the surface assembly of this molecule in few layer films including imaging with submolecular resolution. In addition, we use STS to probe the local density of electronic states across a temperature range spanning the low spin to high spin transition and compare with first principles electronic structure calculations.