Second order nonlinear optical study of bunched and decorated atomic steps on single crystal surfaces

2015 Fiscal Year Final Research Report

• Project/Area Number: 23540363
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: Japan Advanced Institute of Science and Technology
• Principal Investigator: Mizutani Goro 北陸先端科学技術大学院大学, マテリアルサイエンス研究科, 教授 (30183958)
• Co-Investigator(Kenkyū-buntansha): MIYAUCHI YOSHIHIRO 防衛大学校, 応用科学群, 講師 (70467124) ; SANO HARUYUKI 石川工業高等専門学校, 一般教育科, 教授 (80250843) ; KHUAT Hien 北陸先端科学技術大学院大学, マテリアルサイエンス研究科, 助教 (30729190)
• Project Period (FY): 2011-04-28 – 2016-03-31
• Keywords: ナノワイヤ / 白金 / 金 / TiO2 / SHG / SFG

Outline of Final Research Achievements

We have succeeded in depositing Pt nanowire array of 2nm wirewidth and 7nm periodicity by shadow deposition on MgO(210) facetted templates. The SHG intensity from this Pt nanowire array is several tens of times stronger than that of wirewidth of 7nm. We guess one of the candidate origin of this SHG enhancement is the quantum confinement effect of the electron in the nanowire structure. We also observed moire structure in the TEM image of Pd nanowires on the MgO(210) facet. We have also succeeded in making a Au/stepped TiO2(320) sample. We are now measuring the SHG response from these samples. We have also obtained interesting microscopic information from nanofabricated structures on Cr films and hydrogenated stepped Si(111) surfaces.

Free Research Field

表面界面光物性物理学