TY - JOUR
T1 - Photoinduced effects and oxygen dynamics in YBa2Cu3Ox
AU - Osada, M.
AU - Kakihana, M.
AU - Käll, M.
AU - Bäckström, J.
AU - Börjesson, L.
AU - Andersen, N. H.
PY - 2001/11/1
Y1 - 2001/11/1
N2 - Oxygen-deficient YBa2Cu3Ox (Y123) exhibits persistent photoconductivity when illuminated by visible light. We have investigated resonant Raman spectra as a function of excitation wavelength and temperature, which shed new light on photoinduced effects and chain oxygen dynamics in Y123. Experimental evidence suggests that the mechanism behind the unusual photoinduced effects primary involves photoinduced oxygen ordering. Our Raman data also constitute the non-diffraction observations of the superstructure phase transition in Y123.
AB - Oxygen-deficient YBa2Cu3Ox (Y123) exhibits persistent photoconductivity when illuminated by visible light. We have investigated resonant Raman spectra as a function of excitation wavelength and temperature, which shed new light on photoinduced effects and chain oxygen dynamics in Y123. Experimental evidence suggests that the mechanism behind the unusual photoinduced effects primary involves photoinduced oxygen ordering. Our Raman data also constitute the non-diffraction observations of the superstructure phase transition in Y123.
KW - Persistent photoconductivity
KW - Photoinduced metastability
KW - Resonant Raman scattering
KW - YBaCuO
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U2 - 10.1016/S0921-4534(01)00848-6
DO - 10.1016/S0921-4534(01)00848-6
M3 - Article
AN - SCOPUS:0035499394
VL - 364-365
SP - 545
EP - 548
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
ER -