Enhancement of the Thermal Conductivity in gapped Quantum Spin Chains

Abstract

We study mechanism of magnetic energy transport, motivated by recent measurements of the thermal conductivity in low dimensional quantum magnets. We point out a possible mechanism of enhancement of the thermal conductivity in gapped magnetic system, where the magnetic energy transport plays a crucial role. This mechanism gives an interpretation for the recent experiment of CuGeO_3, where the thermal conductivity depends on the crystal direction.

4 pages, 2 figures

References in corpus (3)

• The thermal conductivity of the spin-1/2 XXZ chain at arbitrary temperature
• Strong damping of phononic heat current by magnetic excitations in SrCu_2(BO_3)_2
• Heat transport in SrCu_2(BO_3)_2 and CuGeO_3

Cited by in corpus (23)

• Finite-temperature transport in one-dimensional quantum lattice models
• Matrix product simulations of non-equilibrium steady states of quantum spin chains
• Zero-frequency transport properties of one dimensional spin-1/2 systems
• Thermal conductivity via magnetic excitations in spin-chain materials
• Fourier's Law from Schroedinger Dynamics
• Strong Evidence of Normal Heat Conduction in a one-Dimensional Quantum System
• Thermal transport in one-dimensional spin gap systems
• Drude Weight at Finite Temperatures for Some Non-Integrable Quantum Systems in One Dimension
• Non-dissipative thermal transport in the massive regimes of the XXZ chain
• Transport anomaly in the low energy regime of spin chains
• Limited validity of the Kubo formula for thermal conduction in modular quantum systems
• Density dynamics from current auto-correlations at finite time- and length-scales
• Thermal transport in antiferromagnetic spin-chain materials
• Universal behavior of spin-mediated energy transport in S=1/2 chain cuprates: BaCu2Si2O7 as an example
• Thermomagnetic Power and Figure of Merit for Spin-1/2 Heisenberg Chain
• Diffusive energy transport in the S=1 Haldane chain compound AgVP2S6
• Microscopic Quantum Mechanical Foundation of Fourier's Law
• Nonequilibrium steady-state Kubo formula: equality of transport coefficients
• Heat conductivity in small quantum systems: Kubo formula in Liouville space
• Application of the Hilbert Space Average Method on Heat Conduction Models
• Quantum Heat Transport: Perturbation Theory in Liouville Space
• Thermal conductivity of anisotropic spin - 1/2 two leg ladder:Green's function approach
• Transport properties of a spin-1/2 Heisenberg chain with an embedded spin-S impurity