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arXiv · 1305.1381

Scaling of the Kondo zero bias peak in a hole quantum dot at finite temperatures

O. Klochan·A. P. Micolich·A. R. Hamilton·D. Reuter·A. D. Wieck·F. Reininghaus·M. Pletyukhov·H. Schoeller
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Abstract

We have measured the zero bias peak in differential conductance in a hole quantum dot. We have scaled the experimental data with applied bias and compared to real time renormalization group calculations of the differential conductance as a function of source-drain bias in the limit of zero temperature and at finite temperatures. The experimental data show deviations from the T=0 calculations at low bias, but are in very good agreement with the finite T calculations. The Kondo temperature T_K extracted from the data using T=0 calculations, and from the peak width at 2/3 maximum, is significantly higher than that obtained from finite T calculations.

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O. Klochan, A. P. Micolich, A. R. Hamilton, D. Reuter, A. D. Wieck, F. Reininghaus, M. Pletyukhov, H. Schoeller. 2013-05-07. Scaling of the Kondo zero bias peak in a hole quantum dot at finite temperatures. https://doi.org/10.1103/physrevb.87.201104

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