2005/07/13 by Pascal Simon, O. Entin‐Wohlman, Ora Entin-Wohlman +1
Chemistry · Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Aharonov–Bohm effect #Chemistry #Condensed matter physics #Conductance #Electrical resistivity and conductivity #Flux (metallurgy) #Interferometry #Kondo effect #Magnetic field #Magnetic flux #Magnetic flux quantum #Mesoscopic physics #Phase (matter) #Physics #Quantum #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.72.245313
13 pages, 10 figures
arxiv created 2005/07/13 · openalex publication_date 2005/12/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
An Aharonov-Bohm interferometer (ABI) carrying a quantum dot on one of its arms is analyzed. It is found that the Kondo temperature of the device may depend strongly on the magnetic flux penetrating the ring. As a result, mesoscopic finite-size effects appear leading to plateaus in the finite-temperature conductance as function of the flux. The possibility to deduce the transmission phase shift of the quantum dot from measurements of the ABI conductance when it is opened (i.e., is connected to more than two leads) is examined, leading to the conclusion that finite-size effects, when significant, may hinder the detection of the Kondo phase shift.