TY - JOUR
T1 - Effects of ferromagnetic fluctuations on the electric and thermal transport properties in NaxCoO2
AU - Yanagi, Y.
AU - Ono, Y.
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - We investigate the electronic states and the transport properties of the CoO2 plane in NaxCoO2 on the basis of the two-dimensional triangular lattice 11-band d-p model by using the fluctuation exchange approximation, where we consider the Coulomb interaction between the t2g electrons on a Co site. It is found that all of the effective mass of quasiparticles, the resistivity, the thermoelectric power and the uniform spin susceptibility increase with increasing x for x > 0.6. This implies that the ferromagnetic fluctuations play significant roles on determining the electronic states. These results are qualitatively consistent with the experiments.
AB - We investigate the electronic states and the transport properties of the CoO2 plane in NaxCoO2 on the basis of the two-dimensional triangular lattice 11-band d-p model by using the fluctuation exchange approximation, where we consider the Coulomb interaction between the t2g electrons on a Co site. It is found that all of the effective mass of quasiparticles, the resistivity, the thermoelectric power and the uniform spin susceptibility increase with increasing x for x > 0.6. This implies that the ferromagnetic fluctuations play significant roles on determining the electronic states. These results are qualitatively consistent with the experiments.
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U2 - 10.1088/1742-6596/200/1/012235
DO - 10.1088/1742-6596/200/1/012235
M3 - Conference article
AN - SCOPUS:77957075686
VL - 200
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - SECTION 1
M1 - 012235
ER -