PL EN


Preferences help
enabled [disable] Abstract
Number of results
2008 | 113 | 2 | 645-649
Article title

Thermoelectric Effects in Carbon Nanotube Quantum Dot in the Kondo Regime

Content
Title variants
Languages of publication
EN
Abstracts
EN
Thermoelectric effects in a carbon nanotube quantum dot in the Kondo regime are studied by the equation of motion method. The thermopower is highly sensitive to the structure of the spectral density near the Fermi edge. For temperatures close to the Kondo temperature the thermopower approaches a local minimum, which becomes sharper for orbital energies closer to the Fermi level. For higher temperatures the tjermopower increases, but in the temperature range corresponding to charging energy it again drops and achieves significant negative values. We examine the consequences of symmetry breaking of spin-orbital SU(4) system on thermopower.
Keywords
Contributors
author
  • Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-178 Poznań, Poland
author
  • Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-178 Poznań, Poland
References
  • 1. R. Scheibner, H. Bahmann, D. Reuter, M.N. Kiselev, L.W. Molenkamp, Phys. Rev. Lett. 95, 176602 (2005)
  • 2. M. Krawiec, K.I. Wysokiński, Phys. Rev. B 73, 075306 (2006)
  • 3. R. Sakano, T. Kita, N. Kawakami, cond-mat/0701533 (to be published in Physica E)
  • 4. D. Bose, R. Fazio, Europhys. Lett. 56, 576 (2001)
  • 5. S. Sapmaz, P. Jarillo-Herrero, L.P. Kouvenhoven, H.S.J. Van Der Zant, Semicond. Sci. Technol. 21, 52 (2006)
  • 6. M.C. Llaguno, J.E. Fisher, A.T. Johnson, J. Hone, Nano Lett. 4, 45 (2004)
  • 7. J.P. Small, K.M. Perez, P. Kim, Phys. Rev. Lett. 91, 256801 (2003)
  • 8. M. Choi, R. Lopez, R. Aquado, Phys. Rev. Lett. 95, 0672041 (2005)
  • 9. A. Cottet, T. Kontos, S. Sahoo, H.T. Man, M.S. Choi, W. Belzig, C. Bruder, A.F. Morpurgo, C. Schönenberger, Semicond. Sci. Technol. 21, S78 (2006)
  • 10. T.K. Ng, Phys. Rev. Lett. 76, 487 (1996)
  • 11. Bing Dong, X.L. Lei, J. Phys., Condens. Matter 14, 11747 (2002)
  • 12. C. Lacroix, J. Phys. F, Metal Phys. 11, 2389 (1998)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n202kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.