The formation of a nanoscale hexagonal pattern by light oxidation of the (111) surface of a magnetite single crystal is studied using scanning tunnelling microscopy (STM) measurements. This structure has a periodicity of 42±3 Å and is comprised of three distinct regions. STM images of the surface are strongly bias dependent. The structure is stable on the surface between room-temperature and 95 K, which lies below the Verwey transition temperature

The principal details of Cr film growth on Mo(110) at elevated temperature are described. Cr films form nanostripes by the step-flow growth mechanism for film coverages up to 3 monolayers. In contrast to the Fe/Mo(110) system, there is no indication of strain relaxation in either the first, second, or third layers. The Cr nanostripes remain pseudomorphic up to the onset of Stranski-Krastanov growth, which is typified by the formation of nanowedge

Scanning tunneling spectroscopy (STS) experiments were performed on the (001) and (111) surfaces of single crystalline magnetite. Room temperature spectra exhibit a ~0.2 eV gap around Ef. The importance of perfect surface order to the existence of this gap is illustrated. STS is also carried out on the (111) surface, at 140 and 95 K, just above and below the Verwey transition temperature (TV~120 K), respectively. It is confirmed that above TV a ~0.2