scholarly journals Hole-doping evolution of the quasiparticle band in models of strongly correlated electrons for the high-Tccuprates

1997 ◽  
Vol 56 (9) ◽  
pp. 5597-5609 ◽  
Author(s):  
Daniel Duffy ◽  
Alexander Nazarenko ◽  
Stephan Haas ◽  
Adriana Moreo ◽  
Jose Riera ◽  
...  
Keyword(s):  
Strongly Correlated Electrons ◽  
Hole Doping ◽  
Correlated Electrons ◽  
Strongly Correlated ◽  
Quasiparticle Band

scholarly journals p-type transparent superconductivity in a layered oxide

2020 ◽  
Vol 6 (29) ◽  
pp. eabb8570
Author(s):  
Takuto Soma ◽  
Kohei Yoshimatsu ◽  
Akira Ohtomo
Keyword(s):  
Strongly Correlated Electrons ◽  
Transparent Conductors ◽  
Optical Measurements ◽  
Hole Doping ◽  
Correlated Electrons ◽  
Strongly Correlated ◽  
High Transparency ◽  
Conducting Materials ◽  
Transparent Conducting Materials ◽  
P Type

Development of p-type transparent conducting materials has been a challenging issue. The known p-type transparent conductors unsatisfy both of high transparency and high conductivity nor exhibit superconductivity. Here, we report on epitaxial synthesis, excellent p-type transparent conductivity, and two-dimensional superconductivity of Li1−xNbO2. The LiNbO2 epitaxial films with NbO2 sheets parallel to (111) plane of cubic MgAl2O4 substrates were stabilized by heating amorphous films. The hole doping associated with Li+ ion deintercalation triggered superconductivity below 4.2 kelvin. Optical measurements revealed that the averaged transmittance to the visible light of ~100-nanometer-thick Li1−xNbO2 was ~77%, despite the large number of hole carriers exceeding 1022 per cubic centimeter. These results indicate that Li1−xNbO2 is a previously unknown p-type transparent superconductor, in which strongly correlated electrons at the largely isolated Nb 4dz2 band play an important role for the high transparency.

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.

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