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Can the spin-orbit interaction break the channel degeneracy (conservation) of the two-channel orbital Kondo problem?

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Abstract.

Two-level systems (TLS) interacting with conduction electrons are possibly described by the two-channel Kondo Hamiltonian. In this case the channel degeneracy is due to the real spin of the electrons. The possibility of breaking that degeneracy (conservation) has interest on his own. In fact, we show that the interaction of the conduction electrons with a spin-orbit scatterer nearby the TLS leads to the breaking of the channel degeneracy (conservation) only in the case of electron-hole symmetry breaking. The generated channel symmetry breaking TLS-electron couplings are, however, too weak to result in any observable effects.

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References

  1. P.W. Anderson, B.I. Halperin, and C.M. Varma, Philos. Mag. 25, 1 (1972)

    Google Scholar 

  2. D.L. Cox, A. Zawadowski, Adv. Phys. 47, 599 (1998) and references therein

    Article  Google Scholar 

  3. K. Vladár, A. Zawadowski, Phys. Rev. B 28, 1564 (1983)

    Article  Google Scholar 

  4. G. Zaránd, K. Vladár, Phys. Rev. Lett. 76, 2133 (1996)

    Article  Google Scholar 

  5. I.L. Aleiner, B.L. Altshuler, Y.M. Galperin, T.A. Shutenko, Phys. Rev. Lett. 86, 2629 (2001)

    Article  Google Scholar 

  6. Yu.M. Kagan, N.V. Prokofjev, Zh. Eksp. Teor. Fiz. 90, 2176 (1986)

    Google Scholar 

  7. L. Borda, G. Zaránd, A. Zawadowski, Phys. Rev. B 68, 045004 (2003)

    Article  Google Scholar 

  8. P. Schlottmann, K.J.B. Lee, Phys. Rev. B 52, 6489 (1995), and Physica B 223 & 224, 458 (1996)

    Article  Google Scholar 

  9. O. Újsághy, K. Vladár, G. Zaránd, A. Zawadowski, J. Low Temp. Phys. 126, 1221 (2002), Section 5

    Article  Google Scholar 

  10. A. Zawadowski, Phys. Rev. Lett. 45, 211 (1980)

    Article  Google Scholar 

  11. O. Újsághy, A. Zawadowski, Phys. Rev. B 57, 11598 (1998)

    Article  Google Scholar 

  12. A. Zawadowski, G. Zaránd, P. Noziéres, K. Vladár, G.T. Zimányi, Phys. Rev. B 56, 12947 (1997)

    Article  Google Scholar 

  13. A. Moustakas, D. Fisher, Phys. Rev. B 51, 6908 (1995)

    Article  Google Scholar 

Download references

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Authors and Affiliations

  1. Research Group “Theory of Condensed Matter”, Hungarian Academy of Sciences and Budapest University of Technology and Economics, 1521, Budapest, Hungary

    O. Újsághy & A. Zawadowski

  2. Research Institute for Solid State Physics, POB 49, 1525, Budapest, Hungary

    A. Zawadowski

Authors
  1. O. Újsághy
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  2. A. Zawadowski
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Corresponding author

Correspondence to O. Újsághy.

Additional information

Received: 21 October 2003, Published online: 8 December 2003

PACS:

72.15.Cz Electrical and thermal conduction in amorphous and liquid metals and alloys - 72.10.Fk Scattering by point defects, dislocations, surfaces, and other imperfections (including Kondo effect) - 71.55.-i Impurity and defect levels

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Újsághy, O., Zawadowski, A. Can the spin-orbit interaction break the channel degeneracy (conservation) of the two-channel orbital Kondo problem?. Eur. Phys. J. B 36, 187–191 (2003). https://doi.org/10.1140/epjb/e2003-00334-9

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  • DOI: https://doi.org/10.1140/epjb/e2003-00334-9

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