Nonlinear Response of a Kondo system: Direct and Alternating Tunneling Currents

Details Nonlinear Response of a Kondo system: Direct and Alternating Tunneling Currents Nonlinear Response of a Kondo system: Direct and Alternating Tunneling Currents

1997-10-09

arxiv.org/abs/cond-mat/9710085v3

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, RevTeX, 3 PS figures attached, the article has been significantly developed: time - dependent Schrieffer - Wolff tran

Scientific paper

10.1103/PhysRevLett.81.5394

Non - equilibrium tunneling current of an Anderson impurity system subject to both constant and alternating electric fields is studied. A time - dependent Schrieffer - Wolff transformation maps the time - dependent Anderson Hamiltonian onto a Kondo one. Perturbation expansion in powers of the Kondo coupling strength is carried out up to third order, yielding a remarkably simple analytical expression for the tunneling current. It is found that the zero - bias anomaly is suppressed by an ac - field. Both dc and the first harmonic are equally enhanced by the Kondo effect, while the higher harmonics are relatively small. These results are shown to be valid also below the Kondo temperature.

Affiliated with

Also associated with

No associations

Rating

Nonlinear Response of a Kondo system: Direct and Alternating Tunneling Currents 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 Nonlinear Response of a Kondo system: Direct and Alternating Tunneling Currents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear Response of a Kondo system: Direct and Alternating Tunneling Currents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-466863