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Effect of Measurement Probes upon the Conductance of an Interacting Nanosystem: Detection of an Attached Ring by Nonlocal Many Body Effects

2006/11/30 by Axel Freyn, Jean-Louis Pichard, Jean‐Louis Pichard · 2 citations
Chemistry · Engineering · Physics and Astronomy · #Aharonov–Bohm effect #Chemistry #Computer science #Condensed matter physics #Conductance #Degenerate energy levels #Electron #Fermi Gamma-ray Space Telescope #Fermi energy #Flux (metallurgy) #Magnetic field #Magnetic flux #Magnetoresistance #Materials science #Molecular Junctions and Nanostructures #Nanotechnology #Physics #Quantum and electron transport phenomena #Quantum mechanics #Ring (chemistry) #Surface and Thin Film Phenomena #Telecommunications #Transmission (telecommunications) #Weak localization #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.98.186401

published as Physical Review Letters 98, 18 (04/05/2007) 186401

openalex publication_date 2007/04/30 · arxiv created 2007/05/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We consider a nanosystem connected to measurement probes via leads. When a magnetic flux is varied through a ring attached to one lead at a distance L(c) from the nanosystem, the effective nanosystem transmission |t(s)|(2) exhibits Aharonov-Bohm oscillations if the electrons interact inside the nanosystem. These oscillations can be very large if L(c) is small and if the nanosystem has almost degenerate levels which are put near the Fermi energy by a local gate.

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