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|Title: ||Photoinduced Superconductivity in YSrxBa2-xCu3Oy Films|
|Authors: ||T.-R. Tsai;C.-L. Lin;J.-L. Lin;S.-S. Pai;D.-H. Chen;C.-C. Chi;M.-K. Wu|
|Contributors: ||NTOU:Institute of Optoelectronic Sciences|
|Issue Date: ||2011-10-21T02:33:09Z
|Publisher: ||Chinese Journal of Physics|
|Abstract: ||Abstract:The effects of photoinduced hole doping on YSr,Bar_,CujOy thin films are studied. Previously persistenr photoinduced conductivity (PPC) and T, enhancement have been observed in YBa?CuJO, with y < 7. \\:e sho\r that these persistent photoinduced effects are absent in YSr,Ba~-,Cu30,, films \\ith an oxygen content y < i if the oxygen deficiency is caused by Sr doping, not by insufficient oxygenation. However, upon laser illumination, substantial increase of T, and normal state conductivity are observed in YSr,Ba2--rCu30y films annealed in reduced oxygen pressure. The conductivity decreases and relaxes back to its original \+ue a the temperature approaches room temperature during the wurn-up process. The relaxation of PPC is much faster than that observed in YBalCu30,. \5e attribure these diflerences to the smaller lattice constants of YSr,Ba~_,Cu30,. PACS. 74.72.-h - High-T, cuprates|
|Relation: ||34(2-II), pp.616-620|
|Appears in Collections:||[光電科學研究所] 期刊論文|
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