ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
We report a fabrication of high-density nanodots by photodoping in overdoped Bi2Sr2CaCu2O8+dthin film (Tc = 80 K). A scanning near-field optical microscope probe is used to locally excitecarrier, and photodoped region is associated with lower Tc phase (Tc = 75 K) via overdoping.Nanoscale characterizations with optical reflectivity reveal that nanodots (30-nm diameter) areregularly distributed in 50-nm step. The resultant films with photoinduced nanodots enhance Jc, asituation being similar to strong pinning effects observed in films modified by either ion irradiationor sputtered nanoparticles. These results suggest that photoinduced nanodots with lower Tc act aseffective pinning centers
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.320.167.pdf
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