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A tunable kondo effect in quantum dots |
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| Authors: | SM Cronenwett TH Oosterkamp LP Kouwenhoven |
| Institution: | S. M. Cronenwett, Department of Applied Physics and DIMES, Delft University of Technology, Post Office Box 5046, 2600 GA Delft, Netherlands, and Department of Physics, Stanford University, Stanford, CA, 94305-4060, USA. T. H. Oosterkam. |
| Abstract: | A tunable Kondo effect has been realized in small quantum dots. A dot can be switched from a Kondo system to a non-Kondo system as the number of electrons on the dot is changed from odd to even. The Kondo temperature can be tuned by means of a gate voltage as a single-particle energy state nears the Fermi energy. Measurements of the temperature and magnetic field dependence of a Coulomb-blockaded dot show good agreement with predictions of both equilibrium and nonequilibrium Kondo effects. |
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