Transport properties of a spin-1/2 Heisenberg chain with an embedded spin-S impurity
arXiv:1008.1524 · doi:10.1103/PhysRevB.83.054409
Abstract
The finite temperature transport properties of a spin-1/2 anisotropic Heisenberg chain with an embedded spin-S impurity are studied. Using primarily numerical diagonalization techniques, we study the dependence of the dynamical spin and thermal conductivities on the lattice size, the magnitude of the impurity spin, the host-impurity coupling, the easy axis anisotropy, as well as the dependence on temperature. Particularly for the temperature dependence, we discuss the screening of the impurity by the chain eventually leading to the cutting or healing of the host chain. Numerical results are supported by analytical arguments obtained in the strong host-impurity coupling regime.
arXiv comment7 pages, 10 figures
References in corpus (35)
- Transport and conservation laws
- Susceptibility of the Spin 1/2 Heisenberg Antiferromagnetic Chain
- Diffusion and ballistic transport in one-dimensional quantum systems
- Heat transport by lattice and spin excitations in the spin chain compounds SrCuO_2 and Sr_2CuO_3
- Zero-frequency transport properties of one dimensional spin-1/2 systems
- The thermal conductivity of the spin-1/2 XXZ chain at arbitrary temperature
- Heat conduction in low-dimensional quantum magnets
- Evidence for ideal insulating/conducting state in a 1D integrable system
- Thermal conductivity via magnetic excitations in spin-chain materials
- Ballistic heat transport of quantum spin excitations as seen in SrCuO2
- Transport in Almost Integrable Models: Perturbed Heisenberg Chains
- On the finite temperature Drude weight of the anisotropic Heisenberg chain
- Finite Temperature Dynamical Correlations using the Microcanonical Ensemble and the Lanczos Algorithm
- Low-temperature transport in Heisenberg chains
- Thermal conductivity of anisotropic and frustrated spin-1/2 chains
- Thermal Conductivity of Spin-1/2 Chains
- Thermal transport in one-dimensional spin gap systems
- High temperature thermal conductivity of 2-leg spin-1/2 ladders
- Thermal transport of the XXZ chain in a magnetic field
- Anomalous thermal conductivity of frustrated Heisenberg spin-chains and ladders
- A Sum Rule for Thermal Conductivity and Dynamical Thermal Transport Coefficients in Condensed Matter -I
- Finite temperature transport in disordered Heisenberg chains
- Non-dissipative thermal transport in the massive regimes of the XXZ chain
- Thermal conductivity of quasi-one-dimensional antiferromagnetic spin-chain materials
- Drude weight in systems with open boundary conditions
- Incoherent transport induced by a single static impurity in a Heisenberg chain
- Transport anomaly in the low energy regime of spin chains
- Diverging magnetothermal response in the one-dimensional Heisenberg chain
- An Accurate Determination of the Exchange Constant in Sr_2CuO_3 from Recent Theoretical Results
- Curvature of Levels and Charge Stiffness of One-Dimensional Spinless Fermions
- Enhancement of the Thermal Conductivity in gapped Quantum Spin Chains
- Kondo effect in XXZ spin chains
- Projection operator approach to spin diffusion in the anisotropic Heisenberg chain at high temperatures
- Phase diagram of an impurity in the spin-1/2 chain: two channel Kondo effect versus Curie law
- Thermal transport in a spin-1/2 Heisenberg chain coupled to a (non) magnetic impurity