TY - JOUR
T1 - Structural and electronic properties of Bi-adsorbate-stabilized reconstructions on the InP(100) and Ga Asx N1-x (100) surfaces
AU - Laukkanen, Pasi
AU - Pakarinen, Janne
AU - Ahola-Tuomi, M.
AU - Kuzmin, M.
AU - Perälä, R.E.
AU - Väyrynen, I.J.
AU - Tukiainen, A.
AU - Konttinen, J.
AU - Tuomisto, P.
AU - Pessa, M.
PY - 2006
Y1 - 2006
N2 - Bismuth (Bi) adsorbate-stabilized reconstructions on the InP(100) and Ga Asx N1-x (100) surfaces have been studied by scanning tunneling microscopy (STM) and spectroscopy (STS), x-ray photoelectron spectroscopy, and low-energy electron diffraction. With decreasing coverage, Bi is found to stabilize the (2×1), (2×8), and (2×4) reconstructions on the InP(100) surface and the (2×1) and (2×4) reconstructions on the Ga Asx N1-x (100). STM results show that both the Bi InP (100) (2×4) and Bi Ga Asx N1-x (100) (2×4) reconstructions can be described with the α2 -like structural model. The current-voltage curves measured by STS show the Bi InP (100) (2×1) and Bi Ga Asx N1-x (100) (2×1) structures, which do not obey the electron counting model, to be semiconducting and metallic, respectively. Combining our experimental findings, we propose atomic models for the (2×1) reconstructions. An issue why Bi stabilizes unusual (2×1) structures is discussed.
AB - Bismuth (Bi) adsorbate-stabilized reconstructions on the InP(100) and Ga Asx N1-x (100) surfaces have been studied by scanning tunneling microscopy (STM) and spectroscopy (STS), x-ray photoelectron spectroscopy, and low-energy electron diffraction. With decreasing coverage, Bi is found to stabilize the (2×1), (2×8), and (2×4) reconstructions on the InP(100) surface and the (2×1) and (2×4) reconstructions on the Ga Asx N1-x (100). STM results show that both the Bi InP (100) (2×4) and Bi Ga Asx N1-x (100) (2×4) reconstructions can be described with the α2 -like structural model. The current-voltage curves measured by STS show the Bi InP (100) (2×1) and Bi Ga Asx N1-x (100) (2×1) structures, which do not obey the electron counting model, to be semiconducting and metallic, respectively. Combining our experimental findings, we propose atomic models for the (2×1) reconstructions. An issue why Bi stabilizes unusual (2×1) structures is discussed.
UR - https://www.scopus.com/pages/publications/33749449056
U2 - 10.1103/PhysRevB.74.155302
DO - 10.1103/PhysRevB.74.155302
M3 - Article
AN - SCOPUS:33749449056
SN - 1098-0121
VL - 74
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 15
M1 - 155302
ER -