The cumulant expansion approach for strongly correlated electron models

2003 ◽  
Author(s):  
R. Citro
Keyword(s):  
Strongly Correlated ◽  
Cumulant Expansion ◽  
Strongly Correlated Electron ◽  
Correlated Electron ◽  
Electron Models

scholarly journals Solving strongly correlated electron models on a quantum computer

2015 ◽  
Vol 92 (6) ◽  
Author(s):  
Dave Wecker ◽  
Matthew B. Hastings ◽  
Nathan Wiebe ◽  
Bryan K. Clark ◽  
Chetan Nayak ◽  
...  
Keyword(s):  
Quantum Computer ◽  
Strongly Correlated ◽  
Strongly Correlated Electron ◽  
Correlated Electron ◽  
Electron Models

Strain-Tunable Superconducting Field-Effect Transistor with an Organic Strongly-Correlated Electron System

2014 ◽  
Vol 26 (21) ◽  
pp. 3490-3495 ◽  
Author(s):  
Masayuki Suda ◽  
Yoshitaka Kawasugi ◽  
Takeo Minari ◽  
Kazuhito Tsukagoshi ◽  
Reizo Kato ◽  
...  
Keyword(s):  
Field Effect ◽  
Field Effect Transistor ◽  
Electron System ◽  
Strongly Correlated ◽  
Strongly Correlated Electron ◽  
Strongly Correlated Electron System ◽  
Correlated Electron ◽  
Effect Transistor ◽  
Correlated Electron System

scholarly journals Electrical transport properties and Kondo effect in La1−xPrxNiO3−δ thin films

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Van Hien-Hoang ◽  
Nak-Kwan Chung ◽  
Heon-Jung Kim
Keyword(s):  
Thin Films ◽  
Electrical Transport ◽  
Kondo Effect ◽  
Magnetic Moments ◽  
Structural Disorder ◽  
Strongly Correlated ◽  
Electrical Transport Properties ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron

AbstractThe Kondo effect has been a topic of intense study because of its significant contribution to the development of theories and understanding of strongly correlated electron systems. In this work, we show that the Kondo effect is at work in La1−xPrxNiO3−δ (0 ≤ x ≤ 0.6) thin films. At low temperatures, the local magnetic moments of the 3d eg electrons in Ni2+, which form because of oxygen vacancies, interact strongly with itinerant electrons, giving rise to an upturn in resistivity with x ≥ 0.2. Observation of negative magnetoresistance, described by the Khosla and Fisher model, further supports the Kondo picture. This case represents a rare example of the Kondo effect, where Ni2+ acts as an impurity in the background of Ni3+. We suggest that when Ni2+ does not participate in the regular lattice, it provides the local magnetic moments needed to scatter the conduction electrons in the Kondo effect. These results offer insights into emergent transport behaviors in metallic nickelates with mixed Ni3+ and Ni2+ ions, as well as structural disorder.

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