Transport in quasi one-dimensional spin-1/2 systems

Details Transport in quasi one-dimensional spin-1/2 systems Transport in quasi one-dimensional spin-1/2 systems

2008-01-08

arxiv.org/abs/0801.1268v1

Eur. Phys. J. Special Topics 151, 135-145 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

11 pages, 7 figures

Scientific paper

We present numerical results for the spin and thermal conductivity of one-dimensional (1D) quantum spin systems. We contrast the properties of integrable models such as the spin-1/2 XXZ chain against nonintegrable ones such as frustrated and dimerized chains. The thermal conductivity of the XXZ chain is ballistic at finite temperatures, while in the nonintegrable models, this quantity is argued to vanish. For the case of frustrated and dimerized chains, we discuss the frequency dependence of the transport coefficients. Finally, we give an overview over related theoretical work on intrinsic and extrinsic scattering mechanisms of quasi-1D spin systems.

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