Abstract
We report the stabilization of the $B$-site-ordered phase of epitaxial La${}_{2}$VMnO${}_{6}$ double-perovskite films grown by pulsed-laser deposition. Previous theoretical calculation predicted the possibility of realizing a spin-compensated half-metallic state in this system with an Mn${}^{3+}$ ion at a low spin state. In contrast, our magnetic measurements suggest that the system in ordered phase is ferrimagnetic with Mn${}^{3+}$ at a high spin state. Synchrotron radiation photoemission measurement indicates that the electronic ground state of this material is insulating: occupied Mn 3$d$ ${t}_{2g}$, Mn 3$d$ ${e}_{g}$, and V 3$d$ ${t}_{2g}$ states are located far from the Fermi level. The optical band gap is estimated to be about 0.9 eV, which is similar to the charge transfer gap of LaMnO${}_{3}$ based on the optical absorption spectra.
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