The Ehrenfest time dependence of the suppression of the weak localization correction to the conductance of a { \em clean} chaotic cavity is calculated. Unlike in earlier work, no impurity scattering is invoked to imitate diffraction effects. The calculation extends the semiclassical theory of K. Richter and M. Sieber [Phys. Rev. Lett. { \bf 89}, 206801 (2002)] to include the effect of a finite Ehrenfest time.
Categories: cond-mat.mes-hall