Phys. Rev. Lett. 97, 177005 (2006) [4 pages]Interfacially Controlled Transient Photoinduced SuperconductivityReceived 1 August 2006; published 27 October 2006 We report on a large transient photoinduced enhancement of the superconducting critical temperature (ΔTc=23 K) in epitaxial YBa2Cu3O6.7/La0.7Ca0.3MnO3 bilayers upon visible light illumination. The effect relaxes with a characteristic time of 100 s at low temperatures, which is 4 orders of magnitude faster than the persistent photoconductivity or persistent photoinduced superconductivity previously found in single high-Tc superconducting films. This result is discussed in terms of light induced charge transfer through the interface similar to what happens in semiconductor junctions. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.97.177005
DOI:
10.1103/PhysRevLett.97.177005
PACS:
74.78.Fk, 73.50.Pz, 74.25.Fy, 74.62.Yb
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