The integer quantum Hall effect with a superconducting contact is analyzed. It is shown that the conductance plateaus occur at σxy = 2ne /h which is double the usual value. Non-Andreev scattering at the interface and flux penetration into the superconductor are shown to not affect the result. The effect should be observable in InAs quantum wells with Nb a contact. Typeset using REVTEX 1 This pa...

We consider theoretically a Josephson junction with a superconducting critical current density which has a random sign along the junction's surface. We show that the ground state of the junction corresponds to the phase difference equal to π 2. Such a situation can take place in superconductor-ferromagnet-superconductor junctions.

of Superconductor-Isolator-Superconductor Mixers and Its Effect on Mixing Performance Wenlei SHAN, Mingjye WANG, Shengcai SHI, Yoshihisa IRIMAJIRI and Takeshi NOGUCHI Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Nobeyama, Nagano 384-1305, Japan Purple Mountain Observatory, National Astronomical Observatories of China, Nanjing 210008, China Institute of Astronomy and A...

A serious obstacle impeding the application of lowand hightemperature superconductor devices is the presence of trapped magnetic flux: flux lines or vortices can be induced by fields as small as the Earth’s magnetic field. Once present, vortices dissipate energy and generate internal noise, limiting the operation of numerous superconducting devices. Methods used to overcome this difficulty incl...

– We investigate one dimensional models (the Blonder, Tinkham, Klapwijk model and a tight-binding model) of non local transport at normal metal / superconductor (NS) double interfaces. We find a negative elastic cotunneling crossed conductance, strongly enhanced by additional scatterers away from the interfaces, suggesting the possibility of reflectionless tunneling non local transport at doubl...