Iron islands and dots on W(110) studied with polarized synchrotron radiation

Oriented iron islands of rectangular shape on tungsten were created by self -organization. These systems have been analyzed by Scanning Tunneling Micro scopy (STM) with respect to their shape and concerning their electronic and magnetic behavior with angle resolved photoemission using polarized synchr otron radiation in the soft X-ray region. The magnetic information can be o btained by the technique of Magnetic Linear Dichroism in the Angular Distri bution of photoelectrons (MLDAD). Furthermore, an array of iron dots on tun gsten has been studied with photoemission electron microscopy (PEEM). Eleme nt-specific information is available via the characteristic absorption leve ls (using the tuneable synchrotron radiation) or by threshold photoemission using a mercury lamp due to the different work functions. Circularly polar ized radiation enables the observation of magnetic domains. (C) 2000 Elsevi er Science B.V. All rights reserved.