Collective tunneling of a Wigner necklace in carbon nanotubes

Autor:	Szombathy, Dominik, Werner, Miklós Antal, Moca, Cătălin Paşcu, Legeza, Örs, Hamo, Assaf, Ilani, Shahal, Zaránd, Gergely
Rok vydání:	2023
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons
Zdroj:	Phys. Rev. B 109, 245139 (2024)
Druh dokumentu:	Working Paper
Popis:	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. Comment: 10 pages, 9 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2306.15985 Zobrazit plný text záznamu View this record from Arxiv