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29. 


Pure-carbon ring transistor: Role of topology and structure



G. Cuniberti, J. Yi, and M. Porto

Applied Physics Letters 81, 850 (2002)

Selected for the August 5, 2002 issue of the
Virtual Journal of Nanoscale Science & Technology
.

We report results on the rectification properties of a carbon nanotube (CNT) ring transistor, contacted by CNT leads, whose novel features have been recently communicated by H. Watanabe, C. Manabe, T. Shigematsu, and M. Shimizu [Appl. Phys. Lett. 78, 2928 (2001)]. This letter contains results which are validated by the experimental observations. Moreover, we report on additional features of the transmission of this ring device which are associated with the possibility of breaking the lead inversion symmetry. The linear conductance displays a chessboardlike behavior alternated with anomalous zero lines which should be directly observable in experiments. We are also able to discriminate the structural properties showing up in our results (quasione-dimensional confinement) from pure topological effects (ring configuration), thus helping to gain physical intuition on the rich ring phenomenology.



online .pdf paper (for personal use only)online .pdf paper (for personal use only)
doi absolute link10.1063/1.1497195
online abstract at the publisher site
publisher site (ISSN:0003-6951)
online abstractarXiv preprint: cond-mat/0206171
CiteBaseCiteBase
seleceted abstractVJ Nanoscale Science & Technology entry
mpi-pks/0203009
export BibTeX citation (txt file)
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IF(2002): 4.207


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