Temperature dependence of many-body effects in inversion layers

1978 ◽  
Vol 18 (10) ◽  
pp. 5564-5566 ◽  
Author(s):  
R. K. Kalia ◽  
S. Das Sarma ◽  
M. Nakayama ◽  
J. J. Quinn
Keyword(s):  
Temperature Dependence ◽  
Many Body ◽  
Many Body Effects

Many‐body effects on temperature dependence of the interband absorption in quantum wells

1994 ◽  
Vol 75 (12) ◽  
pp. 7942-7948 ◽  
Author(s):  
Godfrey Gumbs ◽  
Danhong Huang ◽  
Vassilios Fessatidis
Keyword(s):  
Quantum Wells ◽  
Temperature Dependence ◽  
Interband Absorption ◽  
Many Body ◽  
Many Body Effects

Lasing threshold in quantum well surface‐emitting lasers: Many‐body effects and temperature dependence

1989 ◽  
Vol 55 (26) ◽  
pp. 2698-2700 ◽  
Author(s):  
P. L. Gourley ◽  
S. K. Lyo ◽  
T. M. Brennan ◽  
B. E. Hammons ◽  
C. F. Schaus ◽  
...  
Keyword(s):  
Quantum Well ◽  
Temperature Dependence ◽  
Lasing Threshold ◽  
Many Body ◽  
Surface Emitting Lasers ◽  
Many Body Effects ◽  
Emitting Lasers

scholarly journals Many-body effects on the resistivity of a multi-orbital system beyond Landau's Fermi-liquid theory

2015 ◽  
Vol 29 (15) ◽  
pp. 1530005 ◽  
Author(s):  
Naoya Arakawa
Keyword(s):  
Temperature Dependence ◽  
Fermi Liquid ◽  
Quantum Critical Point ◽  
Electron Systems ◽  
Many Body ◽  
Correlated Electron Systems ◽  
Orbital System ◽  
Self Energy ◽  
Correlated Electron ◽  
Many Body Effects

I review many-body effects on the resistivity of a multi-orbital system beyond Landau's Fermi-liquid (FL) theory. Landau's FL theory succeeds in describing electronic properties of some correlated electron systems at low temperatures. However, the behaviors deviating from the temperature dependence in the FL, non-FL-like behaviors, emerge near a magnetic quantum-critical point (QCP). These indicate the importance of many-body effects beyond Landau's FL theory. Those effects in multi-orbital systems have been little understood, although their understanding is important to deduce ubiquitous properties of correlated electron systems and characteristic properties of multi-orbital systems. To improve this situation, I formulate the resistivity of a multi-orbital Hubbard model using the extended Éliashberg theory and adopt this method to the inplane resistivity of quasi-two-dimensional paramagnetic ruthenates in combination with the fluctuation-exchange approximation including the current vertex corrections arising from the self-energy and Maki–Thompson term. The results away from and near the antiferromagnetic QCP reproduce the temperature dependence observed in Sr 2 RuO 4 and Sr 2 Ru 0.075 Ti 0.025 O 4, respectively. I highlight the importance of not only the momentum and the temperature dependence of the damping of a quasiparticle but also its orbital dependence in discussing the resistivity of correlated electron systems.

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