Wave‐Vector Dependence of the Electron Energy Losses of Boron Nitride and Graphite

作者：U. Büchner · 发表于：physica status solidi (b) · 年份：1977 · DOI：10.1002/pssb.2220810124 · 被引用次数：92 · 研究领域：Electron and X-Ray Spectroscopy Techniques、Semiconductor materials and devices、Graphene research and applications

Abstract Wave‐vector (q)‐dependent energy loss functions, Im [−ϵ⟂(ω, q⟂)]−1, and dielectric functions, ϵ2⟂(ω, q⟂), of hexagonal boron nitride and graphite up to q⟂‐values of almost one third of the Brillouin zone and up to energies of 40 eV were derived from electron energy loss measurements. The results are discussed in terms of non‐vertical interband transitions of two‐dimensional band structures.