Sahoo, Leena K. ; Singh, Kanwaljeet ; Budhani, R. C. (2000) Optical response in the mixed state of Tl2Ba2CaCu2O8 epitaxial films Physica C: Superconductivity and its Applications, 331 (2). pp. 157-163. ISSN 0921-4534
Full text not available from this repository.
Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09214...
Related URL: http://dx.doi.org/10.1016/S0921-4534(99)00618-8
Abstract
Measurements of resistive photoresponse (PR) excited with a mechanically chopped beam of He-Ne laser in epitaxial thin films of Tl2Ba2CaCu2O8 (Tl-2212) superconductor are reported. Our objective was to study the existence of photo-enhanced flux creep (PFC), which has been suggested as one of the mechanisms for PR in YBa2Cu3O7 films. Such effects are expected to be enhanced in Tl-2212 because of the low activation barrier for flux motion in this highly anisotropic superconductor. Our measurements, carried out with a sensitivity of ~0.5 μV, however, do not suggest PFC as the mechanism for PR. The data collected for different bias currents, magnetic field strength and chopping frequencies are in excellent agreement with a bolometric model for the PR.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Optical Response; Mixed State; Tl2Ba2Cacu2O8 |
| ID Code: | 5729 |
| Deposited On: | 19 Oct 2010 11:17 |
| Last Modified: | 23 May 2011 07:24 |
Repository Staff Only: item control page
