Thermal transport in a spin-1/2 Heisenberg chain coupled to a (non) magnetic impurity

Abstract

We explore the effect of a (non) magnetic impurity on the thermal transport of the spin-1/2 Heisenberg chain model. This unique system allows to probe Kondo-type phenomena in a prototype strongly correlated system. Using numerical diagonalization techniques we study the scaling of the frequency dependent thermal conductivity with system size and host-impurity coupling strength as well as the dependence on temperature. We focus in particular on the analysis of cutting-healing of weak links or a magnetic impurity by the host chain via Kondo-like screening as the temperature is lowered.

arXiv comment7 pages, 12 figures

References in corpus (9)

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• Heat conduction in low-dimensional quantum magnets
• Finite Temperature Dynamical Correlations using the Microcanonical Ensemble and the Lanczos Algorithm
• Anomalous scaling of conductivity in integrable fermion systems
• Spin- and charge-density oscillations in spin chains and quantum wires
• Impurity Entanglement Entropy and the Kondo Screening Cloud
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Cited by in corpus (13)

• Finite-temperature transport in one-dimensional quantum lattice models
• Real-time and real-space spin- and energy dynamics in one-dimensional spin-1/2 systems induced by local quantum quenches at finite temperatures
• Eigenstate Thermalization in a Locally Perturbed Integrable System
• Low-frequency behavior of off-diagonal matrix elements in the integrable XXZ chain and in a locally perturbed quantum-chaotic XXZ chain
• High-temperature coherent transport in the XXZ chain in the presence of an impurity
• Weak integrability breaking: chaos with integrability signature in coherent diffusion
• Magnetization and energy dynamics in spin ladders: Evidence of diffusion in time, frequency, position, and momentum
• Transport through interacting defects and lack of thermalisation
• Magnetization dynamics in clean and disordered spin-1 XXZ chains
• Fermionic Magic Resources of Quantum Many-Body Systems
• Transport properties of a spin-1/2 Heisenberg chain with an embedded spin-S impurity
• Boundary Chaos: Spectral Form Factor
• Scattering of spinon excitations by potentials in the 1D Heisenberg model