Photoinduced nanodots in Bi2Sr2CaCu2O 8+d

M. Osada, M. Kakihana, H. Yasuoka, M. Käll, L. Börjesson

研究成果: Article


We report a fabrication of high-density nanodots by photodoping in overdoped Bi2Sr2CaCu2O8+d thin film (Tc = 80 K). A scanning near-field optical microscope probe is used to locally excite carrier, and photodoped region is associated with lower T c phase (Tc = 75 K) via overdoping. Nanoscale characterizations with optical reflectivity reveal that nanodots (30-nm diameter) are regularly distributed in 50-nm step. The resultant films with photoinduced nanodots enhance Jc, a situation being similar to strong pinning effects observed in films modified by either ion irradiation or sputtered nanoparticles. These results suggest that photoinduced nanodots with lower Tc act as effective pinning centers.

ジャーナルKey Engineering Materials
出版物ステータスPublished - 2006 1 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

フィンガープリント Photoinduced nanodots in Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O <sub>8+d</sub>' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Osada, M., Kakihana, M., Yasuoka, H., Käll, M., & Börjesson, L. (2006). Photoinduced nanodots in Bi2Sr2CaCu2O 8+d. Key Engineering Materials, 320, 167-170.