Berlin 2018 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 33: Nanotubes and Nanoribbons
TT 33.5: Talk
Tuesday, March 13, 2018, 10:30–10:45, H 0110
Renormalization group study of competing low-temperature phases in single-wall carbon nanotubes — Wen-Min Huang1, •Junichi Okamoto2,3, and Ludwig Mathey2,3 — 1Department of Physics, National Chung-Hsing University, Taichung 40227, Taiwan — 2Zentrum für Optische Quantentechnologien and Institut für Laserphysik, Universität Hamburg, 22761 Hamburg, Germany — 3The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany
Carbon nanotubes (CNs) are intriguing one-dimensional systems where various electronic states emerge from their microscopic details. Examples are superconducting states in CNs embedded in a zeolite matrix [1], Mott insulating states in ultraclean CNs [2], and Wigner crystals in semiconducting CNs [3]. Here, we theoretically investigate the low-temperature phase diagrams of single-wall CNs by a renormalization group method. Important ingredients are: (i) electron-phonon interactions that may induce superconductivity or Peierls distortion and (ii) electronic correlations that may cause Mott insulating states. We discuss some preliminary consequences of the competition among these phases.
Z. K. Tang et al., Science 292, 2462 (2001)
V. V. Deshpande et al., Science 323, 106 (2009)
V. V. Deshpande and M. Bockrath, Nat. Phys. 4, 314 (2008)