TY - JOUR
T1 - Dimer structure of the Si(0 0 1)2 × 1 surface observed by low-temperature scanning tunneling microscope
AU - Ono, Masanori
AU - Kamoshida, A.
AU - Matsuura, N.
AU - Eguchi, T.
AU - Hasegawa, Y.
N1 - Funding Information:
This work was partly supported by a Grant-in-Aid for Scientific Research (Nos. 12450020, 13NP0201) from the Ministry of Education, Science, Sports, and Culture of Japan.
PY - 2003/5
Y1 - 2003/5
N2 - Using a scanning tunneling microscope (STM) which can be operated in ultrahigh vacuum (UHV), low temperature (> 2.8 K), and magnetic field (< 11 T), we studied dimer structure on the Si(0 0 1)2 × 1 surface. Asymmetric (buckled) dimer structure was observed with positive sample voltages, while most of the dimers look symmetric with negative voltages. These observations suggest that the observed symmetric dimer in the filled state images is not intrinsic; neither static symmetric dimer nor flip-flopped asymmetric dimer, but a matter of STM imaging mechanism. Magnetic filed, up to 10 T, applied perpendicularly to the surface does not affect the STM imaging at 10 K.
AB - Using a scanning tunneling microscope (STM) which can be operated in ultrahigh vacuum (UHV), low temperature (> 2.8 K), and magnetic field (< 11 T), we studied dimer structure on the Si(0 0 1)2 × 1 surface. Asymmetric (buckled) dimer structure was observed with positive sample voltages, while most of the dimers look symmetric with negative voltages. These observations suggest that the observed symmetric dimer in the filled state images is not intrinsic; neither static symmetric dimer nor flip-flopped asymmetric dimer, but a matter of STM imaging mechanism. Magnetic filed, up to 10 T, applied perpendicularly to the surface does not affect the STM imaging at 10 K.
KW - Scanning tunneling microscopy
KW - Si(0 0 1)2 × 1
KW - Silicon dimer structure
KW - Silicon surface
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U2 - 10.1016/S0921-4526(02)02439-0
DO - 10.1016/S0921-4526(02)02439-0
M3 - Article
AN - SCOPUS:23044514413
SN - 0921-4526
VL - 329-333
SP - 1644
EP - 1646
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - II
ER -