Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-03-10
Phys. Rev. B 75, 115309 (2007)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures
Scientific paper
10.1103/PhysRevB.75.115309
Fundamental Casimir-Onsager symmetry rules for linear response do not apply to non linear transport. This motivates the investigation of nonlinear dc conductance of mesoscopic GaAs/GaAlAs rings in a 2 wire configuration. The second order current response to a potential bias is of particular interest. It is related to the sensitivity of conductance fluctuations to this bias and contains information on electron interactions not included in the linear response. In contrast with the linear response which is a symmetric function of magnetic field we find that this second order response exhibits a field dependence which contains an antisymmetric part. We analyse the flux periodic and aperiodic components of this asymmetry and find that they only depend on the conductance of the rings which is varied by more than an order of magnitude. These results are in good agreement with recent theoretical predictions relating this asymmetric response to the electron interactions.
Angers Lionel
Bouchiat Helene
Cavanna Andrea
Deblock Richard
Gennser Ulf
No associations
LandOfFree
Magnetic field asymmetry of mesocopic dc rectification in Aharonov Bohm rings does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic field asymmetry of mesocopic dc rectification in Aharonov Bohm rings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic field asymmetry of mesocopic dc rectification in Aharonov Bohm rings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-532586