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19 papers · 1 filter
Interplay of electromagnetic noise and Kondo effect in quantum dots
Serge Florens, Pascal Simon, Sabine Andergassen +1
We investigate the influence of an electromagnetic environment, characterized by a finite impedance , on the Kondo effect in quantum dots. The circuit voltage fluctuations co…
Quantum transport properties of two-dimensional electron gases under high magnetic fields
Thierry Champel, Serge Florens
We study quantum transport properties of two-dimensional electron gases under high perpendicular magnetic fields. For this purpose, we reformulate the high-field expansion, usually…
Electron and phonon Cooling in a Superconductor - Normal Metal - Superconductor Tunnel Junction
Sukumar Rajauria, P. S. Luo, T. Fournier +3
We present evidence for the cooling of normal metal phonons by electron tunneling in a Superconductor - Normal metal - Superconductor tunnel junction. The normal metal electron tem…
Nuclear spin ferromagnetic phase transition in an interacting 2D electron gas
Pascal Simon, Daniel Loss
Electrons in a two-dimensional semiconducting heterostructure interact with nuclear spins via the hyperfine interaction. Using a a Kondo lattice formulation of the electron-nuclear…
Exchange interaction between single magnetic adatoms
P. Wahl, P. Simon, L. Diekhoener +4
The magnetic coupling between single Co atoms adsorbed on a copper surface is determined by probing the Kondo resonance using low-temperature scanning tunneling spectroscopy. The K…
Non-perturbative Approach to Critical Dynamics
Léonie Canet, Hugues Chaté
This paper is devoted to a non-perturbative renormalization group (NPRG) analysis of Model A, which stands as a paradigm for the study of critical dynamics. The NPRG formalism has…