Reference : Effects of short-range interactions on transport through quantum point contacts: A nu...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/75084
Effects of short-range interactions on transport through quantum point contacts: A numerical approach
English
Lassl, Andreas [> > > >]
Schlagheck, Peter mailto [Université de Liège - ULg > Département de physique > Physique quantique statistique >]
Richter, Klaus [> > > >]
2007
Physical Review. B : Condensed Matter
American Institute of Physics
75
4
Yes (verified by ORBi)
International
0163-1829
New York
NY
[en] We study electronic transport through a quantum point contact, where the interaction between the electrons is approximated by a contact potential. Our numerical approach is based on the nonequilibrium Green-function technique which is evaluated at the Hartree-Fock level. We show that this approach allows us to reproduce relevant features of the so-called "0.7 anomaly" observed in the conductance at low temperatures, including the characteristic features in recent shot-noise measurements. This is consistent with a spin-splitting interpretation of the process, and indicates that the 0.7 anomaly should also be observable in transport experiments with ultracold fermionic atoms.
http://hdl.handle.net/2268/75084
10.1103/PhysRevB.75.045346

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