2007/01/01 by Yoshiaki Yamauchi, Koji Sekiguchi, Kensaku Chida +10 · 3 citations
Engineering · Medicine · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Anatomy #Axillary artery #Brachial artery #Condensed matter physics #Fano factor #Impurity #Internal medicine #Kondo effect #Kondo insulator #Measure (data warehouse) #Medicine #Noise (video) #Peripheral Nerve Disorders #Physics #Quantum #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Semiconductor Quantum Structures and Devices #Shot noise #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.106.176601
published in Physical Review Letters 106(17), 176601 (American Physical Society) · 4 pages, 4 figures
openalex publication_date 2007/01/01 · arxiv created 2011/04/27 · arxiv updated 2011/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/13
We measure the current and shot noise in a quantum dot in the Kondo regime to address the nonequilibrium properties of the Kondo effect. By systematically tuning the temperature and gate voltages to define the level positions in the quantum dot, we observe an enhancement of the shot noise as temperature decreases below the Kondo temperature, which indicates that the two-particle scattering process grows as the Kondo state evolves. Below the Kondo temperature, the Fano factor defined at finite temperature is found to exceed the expected value of unity from the noninteracting model, reaching 1.8±0.2.