Statut | Confirmé |
Série | LPS/ENS |
Domaines | physics |
Date | Mardi 14 Juin 2011 |
Heure | 14:00 |
Institut | LPS/ENS |
Salle | Conf IV |
Nom de l'orateur | Cole |
Prenom de l'orateur | Milton W. |
Addresse email de l'orateur | |
Institution de l'orateur | Pennsylvania State University |
Titre | Quasi-one-dimensional physics of electrons, fullerenes and adsorbed films |
Résumé | Since the discovery of carbon nanotubes, much interest has been devoted to a variety of quasi-one-dimensional (Q-1D) phenomena that may occur. In such systems, the nature of phase transitions and the role of large fluctuations are of particular interest. This talk will focus on two kinds of Q-1D systems. One involves gas adsorption on the outside of a single nanotube, recently measured for the first time by a group at the University of Washington [1]. Those results stimulated our investigations by Monte Carlo of the behavior of the classical gases, Ar and Kr [2], which present an apparent discrepancy relevant to the experiments. A related open question involves the effect of physical adsorption on the electronic transport properties of the tube, as measured by the UW group and studied by us with a simple model calculation [3]. The final topic to be discussed is the proposed existence of Q-1D electronic states, bound to a nanotube which has been "coated" with a thin film barrier of He or H2 [4]. \\ \\ 1.Z. H. Wang, J. Wei, P. Morse, J.G. Dash, O. E. Vilches and D. H. Cobden, Phase transitions of adsorbed atoms on the surface of a carbon nanotube, Science 327, 552 (2010)\\ 2. Hye-Young Kim, Milton W. Cole, Mamadou T. Mbaye and Silvina M. Gatica, Phase behavior of Ar and Kr films on carbon nanotubes, to appear in J. Phys. Chem. A \\ 3. Ashley M. DaSilva and Milton W. Cole, Effects of physically adsorbed films on conductivity of two-dimensional metal surfaces and graphene, J. Low Temp. Phys.163, 122 (2011) \\ 4. S. Rotkin, M. Dykman, A. del Maestro and M. W. Cole, unpublished |
Numéro de preprint arXiv | |
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