TY - JOUR
T1 - Real-space observation of screened potential and friedel oscillation by scanning tunneling spectroscopy
AU - Hasegawa, Y.
AU - Ono, M.
AU - Nishigata, Y.
AU - Nishio, T.
AU - Eguchi, T.
PY - 2007/4/1
Y1 - 2007/4/1
N2 - Using scanning tunneling spectroscopy at 5K electrostatic potential profile on the Si(111) 3x 3 Ag surface has been obtained with high spatial and energy resolutions. The potential profile measured around a step edge was explained with the Coulomb potential screened by a two-dimensional electron system which intrinsically exists on the surface. Friedel oscillation, which is characteristic to the screening, was also observed in the potential images. Its shape and phase were discussed in comparison with those of standing waves.
AB - Using scanning tunneling spectroscopy at 5K electrostatic potential profile on the Si(111) 3x 3 Ag surface has been obtained with high spatial and energy resolutions. The potential profile measured around a step edge was explained with the Coulomb potential screened by a two-dimensional electron system which intrinsically exists on the surface. Friedel oscillation, which is characteristic to the screening, was also observed in the potential images. Its shape and phase were discussed in comparison with those of standing waves.
UR - http://www.scopus.com/inward/record.url?scp=34247488880&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247488880&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/61/1/080
DO - 10.1088/1742-6596/61/1/080
M3 - Article
AN - SCOPUS:34247488880
SN - 1742-6588
VL - 61
SP - 399
EP - 403
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 080
ER -