Thermoelectric Properties of Correlated Electron Systems Ln 3Pt4Ge6and LnPt4Ge12(Ln = Ce, Pr) and Non-centrosymmetric X 2 T 12P7(X = Yb, Hf and T = Fe, Co)

2012 ◽  
pp. 31-43 ◽  
Author(s):  
B. D. White ◽  
M. Janoschek ◽  
N. Kanchanavatee ◽  
K. Huang ◽  
L. Shu ◽  
...  
Keyword(s):  
Thermoelectric Properties ◽  
Electron Systems ◽  
Correlated Electron Systems ◽  
Correlated Electron

Ruthenium oxide as a thermoelectric material: unconventional thermoelectric properties of Li2RuO3

2015 ◽  
Vol 3 (40) ◽  
pp. 10430-10435 ◽  
Author(s):  
Ichiro Terasaki ◽  
Shuhei Abe ◽  
Yukio Yasui ◽  
Ryuji Okazaki ◽  
Hiroki Taniguchi
Keyword(s):  
Thermoelectric Properties ◽  
Degrees Of Freedom ◽  
Ruthenium Oxide ◽  
Strongly Correlated Electron Systems ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Ruthenium Oxides ◽  
Correlated Electron

Ruthenium oxides are typical strongly correlated electron systems, where various ordering phenomena occur through delicate interplay among the charge, spin and orbital degrees of freedom.

On the Thermoelectric Properties of Layered Cobaltates

2005 ◽  
Vol 886 ◽  
Author(s):  
Qiang Li
Keyword(s):  
High Temperatures ◽  
Thermoelectric Properties ◽  
Mean Field Theory ◽  
Mean Field ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Quasi Particle ◽  
Correlated Electron Systems ◽  
Correlated Electron

ABSTRACTA study on the thermoelectric properties of layered cobaltates is presented, based on the dynamic mean field theory for strongly correlated electron systems. Electron correlation results in a crossover from coherent quasi-particle excitation at low temperature to incoherent excitation at high temperatures in cobaltates. With an extremely narrow quasi-particle bandwidth (hωc ∼ 50 meV), the thermal destruction of Fermi-liquid occurs at the moderate crossover temperature TM (∼ 200 K), and suggests a new scaling for thermoelectric power S of cobaltates (S ∼ kT/hωc ∼ T/TM) at low temperatures. At high temperatures, the dominating incoherent excitation leads to a weak temperature dependent S, and electric resistivity ρ approaches the Mott-limit ha/e2 ∼ a few mΩ·cm for cobaltates, where a is a lattice constant.

EXACTNESS OF FERMIONIC LINEARIZATION SCHEME WITH CLIFFORD VARIABLES IN d=∞

1995 ◽  
Vol 09 (16) ◽  
pp. 971-975 ◽  
Author(s):  
ARIANNA MONTORSI
Keyword(s):  
Exact Solution ◽  
Single Site ◽  
Strongly Correlated Electron Systems ◽  
Strongly Correlated ◽  
Electron Systems ◽  
Strongly Correlated Electron ◽  
Correlated Electron Systems ◽  
Correlated Electron

We show that the fermionic linearization scheme for dealing with strongly correlated electron systems — when implemented with Clifford variables — becomes exact in the d=∞ limit, at least for Hubbard-like models. In this case, the model is mapped exactly into a single-site problem. The conditions under which such a feature allows to obtain an exact solution are also discussed.

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