نتایج جستجو برای: coherence length

تعداد نتایج: 375414  

Journal: :Physical review. B, Condensed matter 1996
Guinea Pogorelov

In superconductors where the coherence length is comparable to the Fermi wavelength, the vortex viscosity depends on the velocity of the vortex, leading to non linear equations of motion. The trajectories of vortices driven by a. c. fields show a variety of behaviors as function of frequency. Finite pertubations give rise to very long lived transients. The relevance of these results to experime...

Journal: :Physical review letters 2012
P-A Huynh F Portier H le Sueur G Faini U Gennser D Mailly F Pierre W Wegscheider P Roche

We present an experiment where the quantum coherence in the edge states of the integer quantum Hall regime is tuned with a decoupling gate. The coherence length is determined by measuring the visibility of quantum interferences in a Mach-Zehnder interferometer as a function of temperature, in the quantum Hall regime at a filling factor 2. The temperature dependence of the coherence length can b...

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