Optical recognition of surface chirality at Au(hkl) single crystalline surfaces by second harmonic generation rotational anisotropy.
Two-dimensional chirality at naturally chiral gold single crystalline surfaces was detected and characterized using optical second harmonic generation (SHG) measurements. SHG rotational anisotropy (SH-RA) patterns at Au(643)S and Au(643)R surfaces were mirror symmetric to each other. Systematic SH-RA measurements at chiral Au(hkl) surfaces with the same step and kink structures but different (111) terrace widths showed a linear correlation between surface step density and SH-RA fitting parameters arising from defects. These results indicate that SH-RA measurements provide information not only on surface chirality but also on density of surface defects.
Yagi
Ichizo
I
Physical Chemistry Laboratory, Division of Chemistry, Graduate School of Science, Hokkaido University, N10W8 Kita-ku, Sapporo 060-0810, Japan. yagi@pchem.sci.hokudai.ac.jp
Chiba
Masaki
M
Uosaki
Kohei
K
D016880:Anisotropy; D003460:Crystallization; D006046:Gold / Q000737:chemistry*; D008433:Mathematics; D055095:Optics and Photonics; D012399:Rotation; D013499:Surface Properties
D006046:Gold