68 citations · 119 across the 5 of their papers we have counts for
5 papers
Bound states in weakly disordered spin ladders
M. Arlego, W. Brenig, D. C. Cabra +3
We study the appearance of bound states in the spin gap of spin-1/2 ladders induced by weak bond disorder. Starting from the strong-coupling limit, i.e., the limit of weakly couple…
Thermal transport of the XXZ chain in a magnetic field
F. Heidrich-Meisner, A. Honecker, W. Brenig
We study the heat conduction of the spin-1/2 XXZ chain in finite magnetic fields where magnetothermal effects arise. Due to the integrability of this model, all transport coefficie…
Thermal conductivity of one-dimensional spin-1/2 systems
F. Heidrich-Meisner, A. Honecker, D. C. Cabra +1
We analyze the thermal conductivity of frustrated spin-1/2 chains within linear-response theory focusing on its frequency dependence at finite temperatures. Using exact diagonaliza…
Bond-impurity induced bound states in disordered spin-1/2 ladders
M. Arlego, W. Brenig, D. C. Cabra +3
We discuss the effect of weak bond-disorder in two-leg spin ladders on the dispersion relation of the elementary triplet excitations with a particular focus on the appearance of bo…
Comment on "Anomalous Thermal Conductivity of Frustrated Heisenberg Spin Chains and Ladders"
F. Heidrich-Meisner, A. Honecker, D. C. Cabra +1
In a recent letter [Phys. Rev. Lett. 89, 156603 (2002); cond-mat/0201300], Alvarez and Gros have numerically analyzed the Drude weight for thermal transport in spin ladders and fru…