%0 Conference Paper
%F Poster 
%T Raman spectroscopy of double-walled carbon nanotubes
%+ Laboratoire Charles Coulomb (L2C)
%+ Southern Federal University [Rostov-on-Don] (SFEDU)
%+ Centre Interdisciplinaire de Nanoscience de Marseille (CINaM)
%+ Vietnam Academy of Science and Technology (VAST)
%+ Institute of Materials Science, Vietnam Academy of Science and Technology
%+ University of Zaragoza - Universidad de Zaragoza [Zaragoza]
%+ Sofia University "St. Kliment Ohridski"
%A Paillet, Matthieu
%A Michel, Thierry
%A Levshov, Dmitry I.
%A Tran, Huy-Nam
%A Parret, Romain
%A Cao, Thi Thanh
%A Nguyen, van Chuc
%A Arenal, Raul
%A Popov, Valentin N.
%A Zahab, Ahmed Azmi
%A Sauvajol, Jean-Louis
%< sans comité de lecture
%Z L2C:19-051
%B "Modeling Nanostructures" in honor of Philippe Lambin
%C Namur, Belgium
%8 2019-01-31
%D 2019
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
%Z Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall]Poster communications
%X Double-walled carbon nanotubes (DWNTs), consisting of two coaxial and weakly van der Waals coupled single-walled carbon nanotubes (SWNTs), are one of the most ideal and fundamental systems to study the effects of inter-tube coupling on the physical properties in one-dimensional structures.On this poster, we report on the investigations of individual, spatially isolated and suspended double-walled carbon nanotubes (DWNTs) by combination of high-resolution electron microscopy, electron diffraction, Rayleigh spectroscopy and Raman spectroscopy (Figure 1) [1,2]. We first present an overview of the effect of the diameters, inter-tube distance and nature (metallic or semiconducting) on the Raman signature (Radial Breathing Like [1,3,4] and Tangential Modes [4-6]) of DWNTs. We then examine the features of tangential modes and find a clear frequency shift of the inner-layer G modes as a function of the inter-tube distance with respect to the corresponding G modes in equivalent single-walled carbon nanotubes (SWNT).[4-6] These results are understood by considering the effects of the relaxation of the layers and the interaction between the relaxed structures.[7] Finally, we study the experimental excitation dependence of the G modes intensity of the constituent inner and outer SWNTs. In particular, we discuss the effects of the quantum interference between different electronic transitions on the observed behaviors.[8]References[1] D.I. Levshov et al., Carbon, 114, 141 (2017). [2] D.I. Levshov et al., Phys Rev. B 96 (2017), 195410.[3] D.I. Levshov et al., Nano Lett. 11(11) (2011), 4800. [4] H.-N. Tran et al., Adv. Nat. Sci. Nanosci. Nanotechnol. (2017), 8, 15018.[5] D. Levshov et al., J. Phys. Chem. C 119(40) (2015), 23196.[6] D.I. Levshov et al., Phys. Status Solidi B 254(11) (2017), 1700251.[7] V.N. Popov et al., Phys. Rev. B 97 (2018), 165417.[8] H.-N. Tran et al., Phys. Rev. B 95 (2017), 95 (20), 205411
%G English
%L hal-02103082
%U https://hal.science/hal-02103082
%~ CNRS
%~ UNIV-AMU
%~ L2C
%~ CINAM
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021
%~ TEST3-HALCNRS