NMR Relaxation Rate for 1D Multicomponent Spin-Orbital Systems

Details NMR Relaxation Rate for 1D Multicomponent Spin-Orbital Systems NMR Relaxation Rate for 1D Multicomponent Spin-Orbital Systems

2001-01-29

arxiv.org/abs/cond-mat/0101422v1

J. Phys. Soc. Jpn. 69, 3055-3062(2000)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 6 eps figures

Scientific paper

The NMR relaxation rate $1/T_{1}$ is studied for one-dimensional multicomponent spin-orbital systems. By combining the bosonization techniques and the exact solution of the SU($n$) model, we evaluate the power-law exponent and the enhancement factor for $1/T_1$ at low temperatures. We discuss how the band splitting affects the relaxation rate, and find that $1/T_{1}$ may be enhanced around the critical value of the band splitting. The crossover behavior in $1/T_1$ around the critical point is discussed in terms of the low-frequency dynamical spin susceptibility. The effect of the hole-doping is also addressed.

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