Effects of Electron Correlation near Spin-Density-Wave on Angle Dependence of Magnetoconductivity

Details Effects of Electron Correlation near Spin-Density-Wave on Angle Dependence of Magnetoconductivity Effects of Electron Correlation near Spin-Density-Wave on Angle Dependence of Magnetoconductivity

2006-03-03

arxiv.org/abs/cond-mat/0603072v1

J. Phys. Soc. Jpn. 75 (2006) 023709

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 4 figures

Scientific paper

10.1143/JPSJ.75.023709

The effect of electron correlation on the angle dependence of magnetoconductivity is studied in quasi-one-dimensional organic conductors. We investigated the effect on the basis of the momentum dependence of both quasi-particle's lifetime and velocity near the spin-density-wave (SDW). We found that the momentum dependence of quasi-particle's lifetime mainly governs the angle dependence of one-dimensional axis magnetoconductivity. On the other hand, the change in velocity originating from the electron correlation gives the dominant effects on the angle dependence of the interchain axis magnetoconductivity. The effect of electron correlation is clarified from the association of the momentum dependences of lifetime and velocity with the momentum dependences of commensurate orbitals on a Fermi surface in magnetic fields.

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