Results 81 to 90 of about 190,120 (192)
New Numerical Results Indicate a Half-Filling SU(4) Kondo State in Carbon Nanotubes
, 2006 Numerical calculations simulate transport experiments in carbon nanotube quantum dots (P. Jarillo-Herrero et al., Nature 434, 484 (2005)), where a strongly enhanced Kondo temperature T_K ~ 8K was associated with the SU(4) symmetry of the Hamiltonian at ...
C. A. Büsser, G. B. Martins, U. Wilhelm
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Kondo effect in nanostructures [PDF]
physica status solidi (a), 2006 AbstractKondo effect arises whenever a coupling to the Fermi gas induces transitions within the otherwise degenerate ground state multiplet of an interacting system. Both coupling to the Fermi gas and interactions are naturally present in any nanoscale transport experiment.
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Holographic mean field theory and Kondo lattice
Journal of High Energy PhysicsWe first study a non-relativistic field theory model for the Kondo lattice by introducing the Kondo condensation, whose main effect is the hybridization of the flat band of the localized electron with dispersive one of the itinerant electron. The problem
Young-Kwon Han +3 more
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Effect of band filling in the Kondo lattice: A mean-field approach
, 1998 The usual Kondo-lattice, including an antiferromagnetic exchange interaction between nearest-neighboring localized spins, is treated here in a mean-field scheme that introduces two mean-field parameters: one associated with the local Kondo effect, and ...
A. R. Ruppenthal +22 more
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Inducing Kondo screening of vacancy magnetic moments in graphene with gating and local curvature
Nature Communications, 2018 Observing and tuning the Kondo effect in graphene is experimentally challenging. Here, the authors identify the spectroscopic signature of Kondo screening in graphene, along with a quantum phase transition between screened and unscreened phases of ...
Yuhang Jiang +9 more
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Evolution of the Kondo Effect in a Quantum Dot Probed by the Shot Noise
, 2011 We measure the current and shot noise in a quantum dot (QD) in the Kondo regime to address the non-equilibrium properties of the Kondo effect. By systematically tuning the temperature and gate voltages to define the level positions in the QD, we observe ...
Arakawa, Tomonori +8 more
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Disordered Kondo Nanoclusters: Effect of Energy Spacing
, 2003 Exact diagonalization results for Kondo nanoclusters alloyed with mixed valence impurities show that tuning the {\it energy spacing}, $\Delta$, drives the system from the Kondo to the RKKY regime.
A. C. Hewson +6 more
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Cyclotron Dynamics of a Kondo Singlet in a Spin-Orbit-Coupled Alkaline-Earth Atomic Gas
, 2014 We propose a scheme to investigate the interplay between Kondo-exchange interaction and quantum spin Hall effect with ultracold fermionic alkaline-earth atoms trapped in two-dimensional optical lattices using ultracold collision and laser-assisted ...
Du, Juan +5 more
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The Kondo effect of an adatom in graphene and its scanning tunneling spectroscopy
New Journal of Physics, 2013 We study the Kondo effect of a single magnetic adatom on the surface of graphene. The unique linear dispersion relation near the Dirac points in graphene makes it easier for the magnetic atom to form a local magnetic moment, which simply means that the ...
Lin Li +4 more
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Enhancement of Kondo effect in quantum dots with an even number of electrons
, 2000 We investigate the Kondo effect in a quantum dot with almost degenerate spin-singlet and triplet states for an even number of electrons. We show that the Kondo temperature as a function of the energy difference between the states Delta reaches its ...
A. C. Hewson +26 more
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