Manipulating Hubbard-type Coulomb blockade effect of metallic wires embedded in an insulator
| Autor: | Xing Yang, Zhao-Long Gu, Huimin Wang, Jing-Jing Xian, Sheng Meng, Naoto Nagaosa, Wen-Hao Zhang, Hai-Wen Liu, Zi-Heng Ling, Kai Fan, Zhi-Mo Zhang, Le Qin, Zhi-Hao Zhang, Yan Liang, Jian-Xin Li, Ying-Shuang Fu |
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| Rok vydání: | 2021 |
| Předmět: |
Condensed Matter - Materials Science
Condensed Matter - Strongly Correlated Electrons Multidisciplinary Condensed Matter - Mesoscale and Nanoscale Physics Strongly Correlated Electrons (cond-mat.str-el) Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Condensed Matter::Mesoscopic Systems and Quantum Hall Effect |
| DOI: | 10.48550/arxiv.2104.08577 |
| Popis: | Correlated states emerge in low-dimensional systems owing to enhanced Coulomb interactions. Elucidating these states requires atomic scale characterization and delicate control capabilities. In this study, spectroscopic imaging-scanning tunneling microscopy was employed to investigate the correlated states residing in the one-dimensional electrons of the monolayer and bilayer MoSe2 mirror twin boundary (MTB). The Coulomb energies, determined by the wire length, drive the MTB into two types of ground states with distinct respective out-of-phase and in-phase charge orders. The two ground states can be reversibly converted through a metastable zero-energy state with in situ voltage pulses, which tunes the electron filling of the MTB via a polaronic process, as substantiated by first-principles calculations. Our modified Hubbard model reveals the ground states as correlated insulators from an on-site U-originated Coulomb interaction, dubbed Hubbard-type Coulomb blockade effect. Our work sets a foundation for understanding correlated physics in complex systems and for tailoring quantum states for nano-electronics applications. Comment: 4 figures, 19 pages |
| Databáze: | OpenAIRE |
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