Orbital Kondo behavior from dynamical structural defects

Research output: Contribution to journalArticle

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Abstract

The interaction between an atom moving in a model double-well potential and the conduction electrons is treated using renormalization-group methods in next-to-leading logarithmic order. A large number of excited states is taken into account and the Kondo temperature TK is computed as a function of barrier parameters. We find that for special parameters TK can be close to 1 K and it can be of the same order of magnitude as the renormalized splitting Δ. However, in the perturbative regime we always find that TK ≤ δ with TK ≤ 1 K [I. L. Aleiner et al., Phys. Rev. Lett. 86, 2629 (2001)]. We also find that Δ remains unrenormalized at energies above the Debye frequency, ωDebye.

Original languageEnglish
Article number045114
Pages (from-to)451141-451148
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number4
Publication statusPublished - Jul 2003

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Excited states
orbitals
Atoms
Defects
Electrons
renormalization group methods
defects
conduction electrons
Temperature
excitation
atoms
interactions
temperature
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Orbital Kondo behavior from dynamical structural defects. / Borda, L.; Zawadowski, A.; Zaránd, G.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 68, No. 4, 045114, 07.2003, p. 451141-451148.

Research output: Contribution to journalArticle

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