TY - JOUR AU - Kawamura, M. AU - Paul, N. AU - Cherepanov, V. AU - Voigtländer, B. TI - Nanowires and Nanorings at the Atomic Level JO - Physical review letters VL - 91 SN - 0031-9007 CY - College Park, Md. PB - APS M1 - PreJuSER-30247 SP - 096102 PY - 2003 N1 - Record converted from VDB: 12.11.2012 AB - The step-flow growth mode is used to fabricate Si and Ge nanowires with a width of 3.5 nm and a thickness of one atomic layer (0.3 nm) by self-assembly. Alternating deposition of Ge and Si results in the formation of a nanowire superlattice covering the whole surface. One atomic layer of Bi terminating the surface is used to distinguish between the elements Si and Ge. A difference in apparent height is measured in scanning tunneling microscopy images for Si and Ge. Also, different kinds of two-dimensional Si/Ge nanostructures like alternating Si and Ge nanorings having a width of 5-10 nm were grown. KW - J (WoSType) LB - PUB:(DE-HGF)16 UR - <Go to ISI:>//WOS:000185235000035 DO - DOI:10.1103/PhysRevLett.91.096102 UR - https://juser.fz-juelich.de/record/30247 ER -