Non-equilibrium transport through quantum dots with Dzyaloshinsky--Moriya--Kondo interaction

Abstract

We study non-equilibrium transport through a single-orbital Anderson model in a magnetic field with spin-dependent hopping amplitudes. In the cotunneling regime it is described by an effective spin-1/2 dot with a Dzyaloshinsky--Moriya--Kondo (DMK) interaction between the spin on the dot and the electron spins in the leads. Using a real-time renormalization group technique we show that at low temperatures (i) the DMK interaction is strongly renormalized, (ii) the renormalized magnetic field acquires a linear voltage dependence, and (iii) the differential conductance exhibits a voltage asymmetry which is strongly enhanced by logarithmic corrections. We propose transport measurements in which these signatures can be observed.

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• Electrical control of the Kondo effect in a helical edge liquid
• Nonlinear adiabatic response of interacting quantum dots
• Spin-orbit interactions in a helical Luttinger liquid with a Kondo impurity
• Charge fluctuations in nonlinear heat transport
• Magnetic field effects on the finite-frequency noise and ac conductance of a Kondo quantum dot out of equilibrium
• Interplay of Coulomb interaction and spin-orbit effects in multi-level quantum dots
• Finite-frequency-dependent noise of a quantum dot in a magnetic field
• Poor man's scaling: anisotropic Kondo and Coqblin--Schrieffer models
• Transport properties of fully screened Kondo models
• Correlations in non-equilibrium Luttinger liquid and singular Fredholm determinants
• Flavor fluctuations in 3-level quantum dots: Generic SU(3)-Kondo fixed point in equilibrium and non-Kondo fixed points in nonequilibrium
• Bias asymmetry in the conductance profile of magnetic ions on surfaces probed by scanning tunneling microscopy
• The Kondo Temperature of a Two-dimensional Electron Gas with Rashba Spin-orbit Coupling
• Interplay between Kondo tunneling and Rashba precession
• Renormalization-group analysis of a spin-1 Kondo dot: Non-equilibrium transport and relaxation dynamics
• The generic fixed point model for pseudo-spin-1/2 quantum dots in nonequilibrium: Spin-valve systems with compensating spin polarizations
• Kondo effect in a Aharonov-Casher interferometer
• Transport properties of a multichannel Kondo dot in a magnetic field