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NEST Scientific Report 2007-2009 Quantum transport in hybrid normal-superconductor nanostructures
 

Summary: NEST Scientific Report 2007-2009
Quantum transport in hybrid normal-superconductor nanostructures
67
T
he quantum mechanical character of electronic transport can be accessed in
nanoscale systems at low temperatures, typically below 1 K. Quantum behavior is
of particular relevance in hybrid nanostructures, which are realized by putting into
contact materials whose transport properties are different in nature, such as superconductors
and normal metals (or semiconductors). While in the latter transport is due to essentially
independent electrons, in superconductors electrons find themselves in a collective quantum
state which yields transport without dissipation (supercurrent). In normal-superconductor
hybrid nanostructures some superconducting properties are induced in the normal material
giving rise to a large variety of phenomena, the most celebrated one being the Josephson
effect. Our efforts in this field are directed both to experimental and theoretical aspects and
comprise different issues such as spin-dependent effects, Josephson nanodevices and the
characterization of entanglement.
Spin-dependent properties, which are
at the basis of spintronics devices,
can be observed in hybrid systems.
In this context we have analyzed the

  

Source: Abbondandolo, Alberto - Scuola Normale Superiore of Pisa

 

Collections: Mathematics