Dynamic response of a spin-1/2 Kondo singlet

Abstract

We present a study of spin 1/2 Kondo singlets in single electron transistors under a microwave frequency bias excitation. We compare time-averaged conductance $G$ to predicted universal response with respect to microwave frequency, oscillation amplitude and the Kondo temperature and find a non-adiabatic response when the microwave photon energy $hf$ is comparable to the Kondo temperature $k_B{T}_K$. We show that our measurements are qualitatively consistent with the predictions for the radiation-induced decoherence rate of the Kondo spin.

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• Coupling a quantum dot, fermionic leads and a microwave cavity on-chip
• Universal Scaling in Non-equilibrium Transport Through a Single-Channel Kondo Dot
• Spin-1/2 Kondo effect in an InAs nanowire quantum dot: the Unitary limit, conductance scaling and Zeeman splitting
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Cited by in corpus (6)

• Time evolution of the Kondo resonance in response to a quench
• Valley blockade and multielectron spin-valley Kondo effect in silicon
• Scaling laws of the Kondo problem at finite frequency
• Non-perturbative Correlation Effects in Diluted Magnetic Semiconductors
• Dynamical spin accumulation in large-spin magnetic molecules
• Signatures of Kondo-Majorana interplay in ac response