143 citations · 166 across the 3 of their papers we have counts for
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Phase diagram of the spin-Peierls chain with local coupling
Alexander Weisse, Georg Hager, Alan R. Bishop +1
We explore the ground-state phase diagram of a Heisenberg spin chain coupled locally to optical phonons (bond coupling), using large-scale density matrix renormalization group calc…
The spin-Peierls chain revisited
Georg Hager, Alexander Weisse, Gerhard Wellein +2
We extend previous analytical studies of the ground-state phase diagram of a one-dimensional Heisenberg spin chain coupled to optical phonons, which for increasing spin-lattice cou…
On the possibility of an excitonic insulator at the semiconductor-semimetal transition
Franz X. Bronold, Holger Fehske
We calculate the critical temperature below which an excitonic insulator exists at the pressure-induced semiconductor-semimetal transition. Our approach is based on an effective-ma…