The optical constants of ${\mathrm{V}}_2$${\mathrm{O}}_5$ single crystals along the three principal crystallographic axes were measured with use of spectroscopic ellipsometry. Theoretical optical constants of ${\mathrm{V}}_2$${\mathrm{O}}_5$ were derived from band-structure calculations using the first-principles orthogonalized linear combination of atomic orbitals (OLCAO) method. The measured and calculated optical properties are presented and compared.

• Received 16 March 1990

DOI:https://doi.org/10.1103/PhysRevB.42.5289