Collective tunneling of a Wigner necklace in carbon nanotubes

Year: 2024

Type: article

Abstract: 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 et al. [Science 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.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.109.245139

Authors: Dominik Szombathy, Miklós Antal Werner, Cătălin Paşcu Moca, Örs Legeza, Assaf Hamo, Shahal Ilani, Gergely Zaránd

Institutions: Budapest University of Technology and Economics, HUN-REN Wigner Research Centre for Physics, University of Oradea, Technical University of Munich, Harvard University, Weizmann Institute of Science

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: U.S. Department of Energy, Ministerul Cercetării, Inovării şi Digitalizării, Magyar Tudományos Akadémia, Unitatea Executiva pentru Finantarea Invatamantului Superior, a Cercetarii, Dezvoltarii si Inovarii, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Innovációs és Technológiai Minisztérium, Office of Science, Nemzeti Kutatási, Fejlesztési és Innovaciós Alap, Colegiul Consultativ pentru Cercetare-Dezvoltare şi Inovare, National Research, Development and Innovation Office, Basic Energy Sciences, Pacific Northwest National Laboratory

OpenAlex ID: W4400448391