Exotic Kondo Effect from Magnetic Trimers
Abstract
Motivated by the recent experiments of Jamneala et al. [Phys. Rev. Lett. 87, 256804 (2001), PRLTAO, 0031-9007, 10.1103/PhysRevLett.87.256804] by combining ab initio and renormalization group methods, we study the strongly correlated state of a Cr trimer deposited on gold. Internal orbital fluctuations of the trimer lead to a huge increase of TK compared to the single ion Kondo temperature explaining the experimental observation of a zero-bias anomaly for the trimers. The strongly correlated state seems to belong to a new yet hardly explored class of non-Fermi-liquid fixed points.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 2005
- DOI:
- arXiv:
- arXiv:cond-mat/0407399
- Bibcode:
- 2005PhRvL..95g7202L
- Keywords:
-
- 75.20.Hr;
- 71.27.+a;
- 72.15.Qm;
- Local moment in compounds and alloys;
- Kondo effect valence fluctuations heavy fermions;
- Strongly correlated electron systems;
- heavy fermions;
- Scattering mechanisms and Kondo effect;
- Condensed Matter - Mesoscopic Systems and Quantum Hall Effect;
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 5 pages, 4 figures