Photoinduced nanodots in Bi2Sr2CaCu2O 8+d

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

doi:10.4028/0-87849-411-1.167

Photoinduced nanodots in Bi₂Sr₂CaCu₂O _8+d

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We report a fabrication of high-density nanodots by photodoping in overdoped Bi₂Sr₂CaCu₂O_8+d thin film (T_c = 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 (T_c = 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 J_c, 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 T_c act as effective pinning centers.

Original language	English
Pages (from-to)	167-170
Number of pages	4
Journal	Key Engineering Materials
Volume	320
DOIs	https://doi.org/10.4028/0-87849-411-1.167
Publication status	Published - 2006
Externally published	Yes

Keywords

Bisrcacuo
Nanodots
Photoinduced effect
Pinning effect

ASJC Scopus subject areas

Ceramics and Composites
Chemical Engineering (miscellaneous)

Access to Document

10.4028/0-87849-411-1.167

Cite this

@article{7a005da6ee844384a213310f2aba384e,

title = "Photoinduced nanodots in Bi2Sr2CaCu2O 8+d",

abstract = "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.",

keywords = "Bisrcacuo, Nanodots, Photoinduced effect, Pinning effect",

author = "M. Osada and M. Kakihana and H. Yasuoka and M. K{\"a}ll and L. B{\"o}rjesson",

year = "2006",

doi = "10.4028/0-87849-411-1.167",

language = "English",

volume = "320",

pages = "167--170",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications",

}

TY - JOUR

T1 - Photoinduced nanodots in Bi2Sr2CaCu2O 8+d

AU - Osada, M.

AU - Kakihana, M.

AU - Yasuoka, H.

AU - Käll, M.

AU - Börjesson, L.

PY - 2006

Y1 - 2006

N2 - 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.

AB - 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.

KW - Bisrcacuo

KW - Nanodots

KW - Photoinduced effect

KW - Pinning effect

UR - http://www.scopus.com/inward/record.url?scp=33748450112&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748450112&partnerID=8YFLogxK

U2 - 10.4028/0-87849-411-1.167

DO - 10.4028/0-87849-411-1.167

M3 - Article

AN - SCOPUS:33748450112

SN - 1013-9826

VL - 320

SP - 167

EP - 170

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -