scholarly journals Charge transport through extended molecular wires with strongly correlated electrons

2021 ◽  
Author(s):  
James O. Thomas ◽  
Jakub K. Sowa ◽  
Bart Limburg ◽  
Xinya Bian ◽  
Charalambos Evangeli ◽  
...  
Keyword(s):  
Electron Transport ◽  
Charge Transport ◽  
Experimental Studies ◽  
Strongly Correlated Electrons ◽  
Molecular Wires ◽  
Correlated Electrons ◽  
Strongly Correlated

Experimental studies of electron transport through an edge-fused porphyrin oligomer in a graphene junction are interpreted within a Hubbard dimer framework.

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

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4527
Author(s):  
Christopher Rourk ◽  
Yunbo Huang ◽  
Minjing Chen ◽  
Cai Shen
Keyword(s):  
Quantum Dots ◽  
Electron Transport ◽  
Transition Metal ◽  
Strongly Correlated Electrons ◽  
Mott Insulator ◽  
Material Behavior ◽  
Correlated Electrons ◽  
Strongly Correlated ◽  
Strongly Correlated Electron ◽  
Correlated Electron

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.

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