TY - JOUR
T1 - Non-exponential optical modification of the electrical properties in oxygen-deficient YBa2Cu3Ox
AU - Markovitsch, Wilhelm
AU - Brantner, P.
AU - Lang, Wolfgang
AU - Peruzzi, Martin
AU - Pedarnig, Johannes D.
AU - Bäuerle, Dieter
N1 - DOI: 10.1088/1742-6596/43/1/170
Art-Nr: 170
Affiliations: Institut für Materialphysik, Universität Wien, Boltzmanngasse 5, A-1090 Wien; Institut für Angewandte Physik, Universität Linz
Adressen: Markowitsch, W.; Institut für Materialphysik; Universität Wien; Boltzmanngasse 5 A-1090 Wien; email: [email protected]
Import aus Scopus: 2-s2.0-33746305274
29.10.2007: Datenanforderung 1949 (Import Sachbearbeiter)
PY - 2006
Y1 - 2006
N2 - We present studies of the time dependent electrical resistivity of YBa 2Cu3Ox during visible light excitation (photodoping). Illumination with a green semiconductor laser changes the resistivity in a non-exponential way, which is well described by a stretched-exponential function with parameters ? (dispersion parameter) and ? (time constant). ? showed an unusual behaviour: at temperatures below 220 K ? was about 0.3 to 0.4, but increased near room temperature to 0.5 to 0.6. For comparison with results obtained by red-laser excitation we discuss the dependence of the resistivity on the cumulative photon dose, thereby introducing a photon dose constant Ne which corresponds to ?. The results indicate that green-light excitation is somewhat more effective than red-light excitation at low temperatures. Œ 2006 IOP Publishing Ltd.
AB - We present studies of the time dependent electrical resistivity of YBa 2Cu3Ox during visible light excitation (photodoping). Illumination with a green semiconductor laser changes the resistivity in a non-exponential way, which is well described by a stretched-exponential function with parameters ? (dispersion parameter) and ? (time constant). ? showed an unusual behaviour: at temperatures below 220 K ? was about 0.3 to 0.4, but increased near room temperature to 0.5 to 0.6. For comparison with results obtained by red-laser excitation we discuss the dependence of the resistivity on the cumulative photon dose, thereby introducing a photon dose constant Ne which corresponds to ?. The results indicate that green-light excitation is somewhat more effective than red-light excitation at low temperatures. Œ 2006 IOP Publishing Ltd.
U2 - 10.1088/1742-6596/43/1/170
DO - 10.1088/1742-6596/43/1/170
M3 - Article
SN - 1742-6588
VL - 43
SP - 694
EP - 697
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
ER -