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Nernst effect in Tl-Ba-Ca-Cu-O superconducting films due to infrared laser heating

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Lengfellner, Hans ; Schnellbögl, Andreas ; Betz, Josef ; Renk, Karl Friedrich ; Prettl, Wilhelm
Date of publication of this fulltext: 18 Oct 2010 11:48


A Nernst effect has been observed in a high temperature superconductor for the first time. Irradiating superconducting Tl–Ba–Ca–Cu–O thin films by short pulses of a TEA-CO2 laser, a photovoltaic signal is detected perpendicular to a magnetic field applied parallel to the film surface. The signal is attributed to magnetic flux line depinning and flux line transport driven by the laser induced ...


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