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Indication of Strongly Correlated Electron Transport and Mott Insulator in Disordered Multilayer Ferritin Structures (DMFS)

by 1,*,†, 2,3,†, 2 and 2,3,*
1
Independent Researcher, Dallas, TX 75205, USA
2
Ningbo Institute of Materials Technology & Engineering Chinese Academy of Sciences, 1219 Zhongguan Road, Zhenhai District, Ningbo 315201, China
3
College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
Equal contribution.
Academic Editor: Jordi Marti
Materials 2021, 14(16), 4527; https://doi.org/10.3390/ma14164527
Received: 2 July 2021 / Revised: 27 July 2021 / Accepted: 6 August 2021 / Published: 12 August 2021
(This article belongs to the Section Advanced Nanomaterials and Nanotechnology)
Electron tunneling in ferritin and between ferritin cores (a transition metal (iron) oxide storage protein) in disordered arrays has been extensively documented, but the electrical behavior of those structures in circuits with more than two electrodes has not been studied. Tests of devices using a layer-by-layer deposition process for forming multilayer arrays of ferritin that have been previously reported indicate that strongly correlated electron transport is occurring, consistent with models of electron transport in quantum dots. Strongly correlated electrons (electrons that engage in strong electron-electron interactions) have been observed in transition metal oxides and quantum dots and can create unusual material behavior that is difficult to model, such as switching between a low resistance metal state and a high resistance Mott insulator state. This paper reports the results of the effect of various degrees of structural homogeneity on the electrical characteristics of these ferritin arrays. These results demonstrate for the first time that these structures can provide a switching function associated with the circuit that they are contained within, consistent with the observed behavior of strongly correlated electrons and Mott insulators. View Full-Text
Keywords: ferritin; quantum dots; layer-by-layer deposition; conductive atomic force microscopy; strong correlations ferritin; quantum dots; layer-by-layer deposition; conductive atomic force microscopy; strong correlations
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MDPI and ACS Style

Rourk, C.; Huang, Y.; Chen, M.; Shen, C. Indication of Strongly Correlated Electron Transport and Mott Insulator in Disordered Multilayer Ferritin Structures (DMFS). Materials 2021, 14, 4527. https://doi.org/10.3390/ma14164527

AMA Style

Rourk C, Huang Y, Chen M, Shen C. Indication of Strongly Correlated Electron Transport and Mott Insulator in Disordered Multilayer Ferritin Structures (DMFS). Materials. 2021; 14(16):4527. https://doi.org/10.3390/ma14164527

Chicago/Turabian Style

Rourk, Christopher, Yunbo Huang, Minjing Chen, and Cai Shen. 2021. "Indication of Strongly Correlated Electron Transport and Mott Insulator in Disordered Multilayer Ferritin Structures (DMFS)" Materials 14, no. 16: 4527. https://doi.org/10.3390/ma14164527

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