Regensburg 2007 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 10: Superconductivity - Properties, Electronic Structure, Order Parameter

TT 10.13: Talk

Tuesday, March 27, 2007, 12:45–13:00, H18

Ginzburg-Landau theory of superconducting surfaces under electric fields — Pavel Lipavsky¹, •Klaus Morawetz^2,3, Jan Kolacek⁴, Ernst Helmut Brandt⁵, and Tzong Jer Yang⁶ — ¹Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116 Prague 2, Czech Republic — ²Institute of Physics, Chemnitz University of Technology, 09107 Chemnitz, Germany — ³Max Planck Institute for the Physics of Complex Systems, Noethnitzer Str. 38, 01187 Dresden, Germany — ⁴Institute of Physics, Academy of Sciences, Cukrovarnická 10, 16253 Prague 6, Czech Republic — ⁵Max Planck Institute for Metals Research, D-70506 Stuttgart, Germany — ⁶Department of Electrophysics, National Chiao-Tung University, Hsinchu 300, Taiwan

A boundary condition for the Ginzburg-Landau wave function at surfaces biased by a strong electric field is derived within the de Gennes approach. This condition provides a simple theory of the field effect on the critical temperature of superconducting layers. [Phys. Rev. B 73 (2006) 052505-1-5]