title: Optical recognition of surface chirality at Au(hkl) single crystalline surfaces by second harmonic generation rotational anisotropy.
abstract: 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.
authors.affiliation: 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
authors.forename: Ichizo
authors.initials: I
authors.lastname: Yagi
authors.forename: Masaki
authors.initials: M
authors.lastname: Chiba
authors.forename: Kohei
authors.initials: K
authors.lastname: Uosaki
mesh_terms: D016880:Anisotropy; D003460:Crystallization; D006046:Gold / Q000737:chemistry*; D008433:Mathematics; D055095:Optics and Photonics; D012399:Rotation; D013499:Surface Properties
chemical_list: D006046:Gold