@article{oai:nagoya.repo.nii.ac.jp:00005507, author = {Yuhara, J. and Schmid, M. and Varga, P.}, issue = {19}, journal = {Physical Review B}, month = {May}, note = {The single and binary metal films of Pb and Sn on Rh(111) have been studied at room temperature by scanning tunneling microscopy (STM), low-energy electron diffraction, and Auger electron spectroscopy. Both Pb and Sn are mobile at low coverage and form commensurate overlayers of (4*4)-Pb and c(2*4)-Sn, respectively. From atomically resolved STM images, the atomic arrangements of (4*4)-Pb and c(2*4)-Sn have been identified to be hexagonal and rectangular structures, respectively. With increasing coverage, both commensurate phases change into incommensurate phases followed by island formation (Stranski-Krastanov growth). This shows that Rh(111) is static and inert enough to support two-dimensional (2D) phases of Pb and/or Sn without alloying at room temperature. The Pb-Sn bimetallic film on Rh(111) forms an ordered 2D alloy of PbSn_3 with an incommensurate structure close to (√7*√7), contrary to the immiscibility of Pb and Sn in the bulk. From atomically resolved STM images, the atomic arrangement of this (√7*√7)-(Pb,Sn) structure has been determined.}, pages = {195407--195407}, title = {Two-dimensional alloy of immiscible metals: Single and binary monolayer films of Pb and Sn on Rh(111)}, volume = {67}, year = {2003} }