scholarly journals Universality classes of metal-insulator transitions in strongly correlated electron systems and mechanism of high-temperature superconductivity

2005 ◽  
Vol 72 (7) ◽  
Author(s):  
Masatoshi Imada
Keyword(s):  
High Temperature ◽  
High Temperature Superconductivity ◽  
Strongly Correlated Electron Systems ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Metal Insulator ◽  
Correlated Electron Systems ◽  
Correlated Electron ◽  
Universality Classes

Epitaxial growth of V2O3 on Al2O3 by reactive MBE

2011 ◽  
Vol 1292 ◽  
Author(s):  
Leander Dillemans ◽  
Tuan Tran ◽  
Md. Nurul Kabir Bhuiyan ◽  
Tomas Smets ◽  
Mariela Menghini ◽  
...  
Keyword(s):  
Epitaxial Growth ◽  
Molecular Beam ◽  
Point Of View ◽  
Strongly Correlated Electron Systems ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Metal Insulator ◽  
Correlated Electron Systems ◽  
Correlated Electron

ABSTRACTVanadium oxides are strongly correlated electron systems that are interesting both from a fundamental scientific point of view and for possible future applications including memory and sensors. In this contribution, we report on the epitaxial growth of V2O3 thin films on c-Al2O3 (0001) with molecular beam epitaxy and atomic oxygen. We studied the influence of deposition rate and substrate temperature on the structural properties and the metal-insulator transition.

scholarly journals Crossover Induced Electron Pairing and Superconductivity by Kinetic Renormalization in Correlated Electron Systems

2018 ◽  
Vol 3 (3) ◽  
pp. 26 ◽  
Author(s):  
Takashi Yanagisawa ◽  
Mitake Miyazaki ◽  
Kunihiko Yamaji
Keyword(s):  
Wave Function ◽  
High Temperature ◽  
High Temperature Superconductivity ◽  
Electron System ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron ◽  
The Many

We investigate the ground state of strongly correlated electron systems based on an optimization variational Monte Carlo method to clarify the mechanism of high-temperature superconductivity. The wave function is optimized by introducing variational parameters in an exponential-type wave function beyond the Gutzwiller function. The many-body effect plays an important role as an origin of superconductivity in a correlated electron system. There is a crossover between weakly correlated region and strongly correlated region, where two regions are characterized by the strength of the on-site Coulomb interaction U. We insist that high-temperature superconductivity occurs in the strongly correlated region.

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