Jnawali, Giriraj; Wagner, Th.; Hattab, Hichem; Möller, Rolf; Lorke, Axel; Horn-von Hoegen, Michael:
Two-dimensional electron transport and scattering in Bi(111) surface states
In: e-Journal of Surface Science and Nanotechnology, Band 8 (2010), S. 27 - 31
2010Artikel/Aufsatz in Zeitschrift
Physik (inkl. Astronomie)Fakultät für Physik » ExperimentalphysikForschungszentren » Center for Nanointegration Duisburg-Essen (CENIDE)
Damit verbunden: 1 Publikation(en)
Titel in Englisch:
Two-dimensional electron transport and scattering in Bi(111) surface states
Autor*in:
Jnawali, GirirajUDE
LSF ID
10417
ORCID
0000-0003-0954-8614ORCID iD
Sonstiges
der Hochschule zugeordnete*r Autor*in
;
Wagner, Th.;Hattab, HichemUDE
LSF ID
49259
Sonstiges
der Hochschule zugeordnete*r Autor*in
;
Möller, RolfUDE
GND
1252401639
LSF ID
10359
ORCID
0000-0003-1924-8615ORCID iD
Sonstiges
der Hochschule zugeordnete*r Autor*in
;
Lorke, AxelUDE
GND
1042619697
LSF ID
2509
ORCID
0000-0002-0405-7720ORCID iD
Sonstiges
der Hochschule zugeordnete*r Autor*in
;
Horn-von Hoegen, MichaelUDE
GND
1201039908
LSF ID
10366
ORCID
0000-0003-0324-3457ORCID iD
Sonstiges
der Hochschule zugeordnete*r Autor*in
Erscheinungsjahr:
2010
Sprache des Textes:
Englisch

Abstract in Englisch:

The Bi(111) surface exhibits a pronounced surface state which acts as dominant transport channel for electric current. We performed in situ four-point probe resistance measurements for thin Bi(111) films on Si(001) to study electron scattering effects in this two-dimensional (2D) electron gas. The surface morphology was manipulated by additional deposition of Bi at 80 K. A linear increase of surface resistance was measured at extremely low coverage of less than 1 % of a bilayer (BL) and the slope gradually decreases with coverage up to about 0.5 BL. This behavior was qualitatively explained applying a simple picture of electron scattering at adatoms or small islands during the early stages of growth in Bi(111) homoepitaxy. Beyond 0.5 BL resistance changes periodically showing an antiphase correlation with roughness-induced LEED (00)-spot intensity oscillations, indicating the scattering of electrons at island edges