Abstract
We measure transport through gold grain quantum dots fabricated using electromigration, with magnetic impurities in the leads. A Kondo interaction is observed between dot and leads, but the presence of magnetic impurities results in a gate-dependent zero-bias conductance peak that is split due to a RKKY interaction between the spin of the dot and the static spins of the impurities. A magnetic field restores the single Kondo peak in the case of an antiferromagnetic RKKY interaction. This system provides a new platform to study Kondo and RKKY interactions in metals at the level of a single spin.
| Original language | English (US) |
|---|---|
| Article number | 017205 |
| Journal | Physical review letters |
| Volume | 96 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 13 2006 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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Heersche, H. B., Deâ Groot, Z., Folk, J. A., Kouwenhoven, L. P., Vané Der Zant, H. S. J., Houck, A. A., Labaziewicz, J., & Chuang, I. L. (2006). Kondo ffect in the presence of magnetic impurities. Physical review letters, 96(1), [017205]. https://doi.org/10.1103/PhysRevLett.96.017205