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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10279

Title: Optical second harmonic generation from Pt nanowires with boomerang-like cross-sectional shapes
Authors: Ogata, Yoichi
Nguyen, Anh Tuan
Miyauchi, Yoshihiro
Mizutani, Goro
Keywords: SHG
Pt nanowire
MgO
facet
imperfection
Issue Date: 2011-08-16
Publisher: American Institute of Physics
Magazine name: Jounal of Applied Physics
Volume: 110
Number: 4
Start page: 044301-1
End page: 044301-6
DOI: 10.1063/1.3624593
Abstract: We have fabricated Pt nanowires with boomerang-like cross-sectional shapes on the We have fabricated Pt nanowires with boomerang-like cross-sectional shapes on the MgO(110) faceted template and observed their optical second-harmonic generation (SHG) response. In the TEM images the Pt nanowires on the MgO substrate had macroscopic C_<2v> symmetry, however, their structure had microscopic imperfections. In the SHG response, as a function of the sample rotation angle around the substrate normal, we found contributions from the nonlinear susceptibility elements χ_<113>, χ_<223>, χ_<311>, χ_<322>, and χ_<333> originating from the broken symmetry in the 3; [110] direction of the MgO substrate. The indices 1 and 2 denote the [001] and [11^^-0] directions, respectively. Under C_<2v> symmetry no SHG is expected in the s-in/s-out polarization configuration, however, a finite SHG was observed in this polarization configuration. We suggest that the SHG in the forbidden configuration might originate from the imperfections in the nanowire structure.
Rights: Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Yoichi Ogata, Nguyen Anh Tuan, Yoshihiro Miyauchi, and Goro Mizutani, Jounal of Applied Physics, 110(4), 044301 (2011) and may be found at http://link.aip.org/link/doi/10.1063/1.3624593
URI: http://hdl.handle.net/10119/10279
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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