Universal Scaling in Non-equilibrium Transport Through a Single-Channel Kondo Dot

Abstract

Scaling laws and universality play an important role in our understanding of critical phenomena and the Kondo effect. Here we present measurements of non-equilibrium transport through a single-channel Kondo quantum dot at low temperature and bias. We find that the low-energy Kondo conductance is consistent with universality between temperature and bias and characterized by a quadratic scaling exponent, as expected for the spin-1/2 Kondo effect. The non-equilibrium Kondo transport measurements are well-described by a universal scaling function with two scaling parameters.

v2: improved introduction and theory-experiment comparsion

References in corpus (4)

• Observation of the two-channel Kondo effect
• Kondo effect in quantum dots
• Tuning the Kondo effect with a mechanically controllable break junction
• Kondo resonances and anomalous gate dependence of electronic conduction in single-molecule transistors

Cited by in corpus (8)

• Real-time simulations of nonequilibrium transport in the single-impurity Anderson model
• Transport properties and Kondo correlations in nanostructures: the time-dependent DMRG method applied to quantum dots coupled to Wilson chains
• In situ reduction of charge noise in GaAs/AlGaAs Schottky-gated devices
• Universal Scaling of Nonequilibrium Transport in the Kondo Regime of Single Molecule Devices
• Universal scaling in nonequilibrium transport through an Anderson impurity
• Nonequilibrium dephasing in Coulomb blockade quantum dots
• Magnetic-Field-Induced Crossover to a Nonuniversal Regime in a Kondo Dot
• Photoluminiscence of a quantum dot hybridized with a continuum