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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
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Helicity and electron-correlation effects on transport properties of double-walled carbon nanotubes
1Theoretische Physik, Universität Regensburg, Germany.
Abstract:
Starting from selection rules for intershell tunneling in double-walled nanotubes with commensurate (c-DWNTs) and incommensurate (i-DWNTs) shells, we show that for i-DWNTs the coupling is negligible between lowest energy subbands, but it becomes important as the higher subbands become populated. In turn the elastic mean-free path of i-DWNTs is reduced for increasing energy, with additional suppression at subband onsets and crossings. At low energies, a Luttinger liquid theory for DWNTs with metallic shells is derived. Interaction effects are more pronounced in i-DWNTs than in c-DWNTs.
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