Conductance plateau in quantum spin transport through an interacting quantum dot

2008/06/30 by Yun-Juan Bao, Yan-Ru Bao, Ning-Hua Tong +3
Engineering · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Molecular Junctions and Nanostructures #Quantum and electron transport phenomena #cond-mat.mes-hall #cond-mat.str-el

paper · pdf · doi:10.1209/0295-5075/83/37007

published as EPL 83, 37007 (2008) · 5 pages, 5 figures

arxiv created 2008/06/30 · openalex publication_date 2008/07/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

Quantum spin transport is studied in an interacting quantum dot. It is found that a conductance "plateau" emerges in the non-linear charge conductance by a spin bias in the Kondo regime. The conductance plateau, as a complementary to the Kondo peak, originates from the strong electron correlation and exchange processes in the quantum dot, and can be regarded as one of the characteristics in quantum spin transport.

Citations

• Observation of the Spin Hall Effect in Semiconductors
• Time-dependent transport in interacting and non-interacting mesoscopic systems
• Kondo Effect in the Presence of Itinerant-Electron Ferromagnetism Studied with the Numerical Renormalization Group Method
• Low Temperature Transport through a Quantum Dot: The Anderson Model out of Equilibrium
• Landauer formula for the current through an interacting electron region