Collective tunneling of a Wigner necklace in carbon nanotubes
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866929416447197184 |
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| author | Szombathy, Dominik Werner, Miklós Antal Moca, Cătălin Paşcu Legeza, Örs Hamo, Assaf Ilani, Shahal Zaránd, Gergely |
| author_facet | Szombathy, Dominik Werner, Miklós Antal Moca, Cătălin Paşcu Legeza, Örs Hamo, Assaf Ilani, Shahal Zaránd, Gergely |
| contents | The collective tunneling of a Wigner necklace - a crystal-like state of a small number of strongly interacting electrons confined to a suspended nanotube and subject to a double well potential - is theoretically analyzed and compared with experiments in [Shapir \emph{et al.}, Science {\bf 364}, 870 (2019)]. Density Matrix Renormalization Group computations, exact diagonalization, and instanton theory provide a consistent description of this very strongly interacting system, and show good agreement with experiments. Experimentally extracted and theoretically computed tunneling amplitudes exhibit a scaling collapse. Collective quantum fluctuations renormalize the tunneling, and substantially enhance it as the number of electrons increases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_15985 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Collective tunneling of a Wigner necklace in carbon nanotubes Szombathy, Dominik Werner, Miklós Antal Moca, Cătălin Paşcu Legeza, Örs Hamo, Assaf Ilani, Shahal Zaránd, Gergely Mesoscale and Nanoscale Physics Strongly Correlated Electrons The collective tunneling of a Wigner necklace - a crystal-like state of a small number of strongly interacting electrons confined to a suspended nanotube and subject to a double well potential - is theoretically analyzed and compared with experiments in [Shapir \emph{et al.}, Science {\bf 364}, 870 (2019)]. Density Matrix Renormalization Group computations, exact diagonalization, and instanton theory provide a consistent description of this very strongly interacting system, and show good agreement with experiments. Experimentally extracted and theoretically computed tunneling amplitudes exhibit a scaling collapse. Collective quantum fluctuations renormalize the tunneling, and substantially enhance it as the number of electrons increases. |
| title | Collective tunneling of a Wigner necklace in carbon nanotubes |
| topic | Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2306.15985 |