Magdalena Marganska-Lyzniak

Privatdozent


Curriculum vitae


magdalena [dot] marganska [at] ur [dot] de


+49 (0)941 943 2042


Institute for Theoretical Physics in Regensburg



Broken SU(4) symmetry in a Kondo-correlated carbon nanotube


Journal article


D. R. Schmid, S. Smirnov, M. Marganska, A. Dirnaichner, P. L. Stiller, M. Grifoni, A. K. Hüttel, C. Strunk
Phys. Rev. B, vol. 91(15), American Physical Society, 2015 Apr, p. 155435


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APA   Click to copy
Schmid, D. R., Smirnov, S., Marganska, M., Dirnaichner, A., Stiller, P. L., Grifoni, M., … Strunk, C. (2015). Broken SU(4) symmetry in a Kondo-correlated carbon nanotube. Phys. Rev. B, 91(15), 155435. https://doi.org/10.1103/PhysRevB.91.155435


Chicago/Turabian   Click to copy
Schmid, D. R., S. Smirnov, M. Marganska, A. Dirnaichner, P. L. Stiller, M. Grifoni, A. K. Hüttel, and C. Strunk. “Broken SU(4) Symmetry in a Kondo-Correlated Carbon Nanotube.” Phys. Rev. B 91, no. 15 (April 2015): 155435.


MLA   Click to copy
Schmid, D. R., et al. “Broken SU(4) Symmetry in a Kondo-Correlated Carbon Nanotube.” Phys. Rev. B, vol. 91, no. 15, American Physical Society, Apr. 2015, p. 155435, doi:10.1103/PhysRevB.91.155435.


BibTeX   Click to copy

@article{schmid2015a,
  title = {Broken SU(4) symmetry in a Kondo-correlated carbon nanotube},
  year = {2015},
  month = apr,
  issue = {15},
  journal = {Phys. Rev. B},
  pages = {155435},
  publisher = {American Physical Society},
  volume = {91},
  doi = {10.1103/PhysRevB.91.155435},
  author = {Schmid, D. R. and Smirnov, S. and Marganska, M. and Dirnaichner, A. and Stiller, P. L. and Grifoni, M. and Hüttel, A. K. and Strunk, C.},
  month_numeric = {4}
}

Abstract

Understanding the interplay between many-body phenomena and nonequilibrium in systems with entangled spin and orbital degrees of freedom is a central objective in nanoelectronics. We demonstrate that the combination of Coulomb interaction, spin-orbit coupling, and valley mixing results in a particular selection of the inelastic virtual processes contributing to the Kondo resonance in carbon nanotubes at low temperatures. This effect is dictated by conjugation properties of the underlying carbon nanotube spectrum at zero and finite magnetic field. Our measurements on a clean carbon nanotube are complemented by calculations based on a field-theoretical Keldysh approach to the nonequilibrium Kondo problem which well reproduces the rich experimental observations in Kondo transport.





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