Kondo effect in multielectron quantum dots at high magnetic fields

Details Kondo effect in multielectron quantum dots at high magnetic fields Kondo effect in multielectron quantum dots at high magnetic fields

2000-03-15

arxiv.org/abs/cond-mat/0003261v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1103/PhysRevB.63.035319

We present a general description of low temperature transport through a quantum dot with any number of electrons at filling factor $1<\nu <2$. We provide a general description of a novel Kondo effect which is turned on by application of an appropriate magnetic field. The spin-flip scattering of carriers by the quantum dot only involves two states of the scatterer which may have a large spin. This process is described by spin-flip Hubbard operators, which change the angular momentum, leading to a Kondo Hamiltonian. We obtain antiferromagnetic exchange couplings depending on tunneling amplitudes and correlation effects. Since Kondo temperature has an exponential dependence on exchange couplings, quantitative variations of the parameters in different regimes have important experimental consequences. In particular, we discuss the {\it chess board} aspect of the experimental conductance when represented in a grey scale as a function of both the magnetic field and the gate potential affecting the quantum dot.

Affiliated with

Also associated with

No associations

Rating

Kondo effect in multielectron quantum dots at high magnetic fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Kondo effect in multielectron quantum dots at high magnetic fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kondo effect in multielectron quantum dots at high magnetic fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-262093