Incoherent transport induced by a single static impurity in a Heisenberg chain (CROSBI ID 155673)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Barišić, Osor Slaven ; Prelovšek, Peter ; Metavitsiadis, Alexandros ; Zotos, Xenofon
engleski
Incoherent transport induced by a single static impurity in a Heisenberg chain
The effect of a single static impurity on the many-body states and on the spin and thermal transport in the one-dimensional anisotropic Heisenberg chain at finite temperatures is studied. Whereas the pure Heisenberg model reveals Poisson level statistics and dissipationless transport due to integrability, we show using the numerical approach that a single impurity induces Wigner-Dyson level statistics and at high enough temperature incoherent transport within the chain, whereby the relaxation time and d.c. conductivity scale linearly with length.
transport; impurity; Heisenberg chain;
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Podaci o izdanju
80 (12)
2009.
125118-1-125118-4
objavljeno
1098-0121
10.1103/PhysRevB.80.125118