The Kondo effect is an unusual scattering mechanism of conduction electrons in a metal due to magnetic impurities, which contributes a term to the electrical resistivity that increases logarithmically with temperature as the temperature T is lowered. The Kondo effect can be considered as an example of asymptotic freedom, i.e. a situation where the coupling becomes non-perturbatively strong at low temperatures and low energies. In the Kondo problem, the coupling refers to the interaction between the localized magnetic impurities and the itinerant electrons.
Selected publications
Odd and even Kondo effects from emergent localization in quantum point contacts
Iqbal, MJ; Roi, L; Koop, EJ; Dekker, JB; de Jong, JP; van der Velde, JHM; Reuter, D; Wieck, AD; Aguado, R; Meir Y; van der Wal, CH
Nature 501, 79 (2013)
Magnetic-Field Probing of an SU(4) Kondo Resonance in a Single-Atom Transistor, G. C. Tettamanzi, J. Verduijn, G. P. Lansbergen, M. Blaauboer, M. J. Calderón, R. Aguado, and S. Rogge
Phys. Rev. Lett. 108, 046803 (2012)
Two-impurity Anderson model revisited: Competition between Kondo effect and reservoir-mediated superexchange in double quantum dots
Minchul Lee, Mahn-Soo Choi, Rosa López, Ramón Aguado, Jan Martinek, and Rok Žitko
Phys. Rev. B 81, 121311(R) (2010)
SU(4) Kondo Effect in Carbon Nanotubes
Manh-Soo Choi, Rosa López, and Ramón Aguado
Phys. Rev. Lett. 95, 067204 (2005)