Thermal transport in a spin-1/2 Heisenberg chain coupled to a magnetic or nonmagnetic impurity (CROSBI ID 166962)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Metavitsiadis, Alexandros ; Zotos, Xenophon ; Barišić, Osor Slaven ; Prelovšek, Peter
engleski
Thermal transport in a spin-1/2 Heisenberg chain coupled to a magnetic or nonmagnetic impurity
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.
thermal transport; Heisenberg chain; Kondo
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Podaci o izdanju
81
2010.
205101-1-205101-6
objavljeno
1098-0121
10.1103/PhysRevB.81.205101