Spectroscopy of the Kondo problem in a box

Ribhu K. Kaul, Gergely Zaránd, Shailesh Chandrasekharan, Denis Ullmo, Harold U. Baranger

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


Motivated by experiments on double quantum dots, we study the problem of a single magnetic impurity confined in a finite metallic host. We prove an exact theorem for the ground state spin, and use analytic and numerical arguments to map out the spin structure of the excitation spectrum of the many-body Kondo-correlated state, throughout the weak to strong coupling crossover. These excitations can be probed in a simple tunneling-spectroscopy transport experiment; for that situation we solve rate equations for the conductance.

Original languageEnglish
Article number176802
JournalPhysical Review Letters
Issue number17
StatePublished - 2006

ASJC Scopus subject areas

  • General Physics and Astronomy


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