Park, JH Kim, DH Kim, YH Kang, WN Choi, SS Hahn, TS Khim, ZG 2024-01-21T19:37:24Z 2024-01-21T19:37:24Z 2021-09-05 1996-04-01 0021-8979 https://pubs.kist.re.kr/handle/201004/144473 The photoresponse of a YBa2Cu3Ox grain-boundary junction has been measured as a function of chopping frequency and bias current in a temperature range of 2 K less than or equal to T less than or equal to 70 K. The response was found to be mostly bolometric, but a nonbolometriclike component was also identified, which appeared as a chopping-frequency independent signal while immersing the sample in the superfluid helium. The bias-current dependence of the response showed a peak at a current corresponding to the critical current of the junction, and the peak values remained constant for 30 K<T<70 K. However, below 15 K the peak of the photoresponse increased very sharply with decreasing temperature following a 1/T-3 dependence, consistent with the temperature dependence of the thermal boundary resistance between the film and the substrate. (C) 1996 American Institute of Physics. English AMER INST PHYSICS SUPERCONDUCTING THIN-FILMS OPTICAL-RESPONSE EPITAXIAL-FILMS Photoresponse of a YBa2Cu3Ox grain-boundary junction Article 10.1063/1.361380 1 JOURNAL OF APPLIED PHYSICS, v.79, no.7, pp.3770 - 3773 JOURNAL OF APPLIED PHYSICS 79 7 3770 3773 scie scopus A1996UC07300065 2-s2.0-0030126214 Physics, Applied Physics Article SUPERCONDUCTING THIN-FILMS OPTICAL-RESPONSE EPITAXIAL-FILMS YBa2Cu3Ox grain boundary junction