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35 papers · 2 filters
Low-temperature properties of single-crystal CrB
Andreas Bauer, Alexander Regnat, Christian G. F. Blum +6
We report the low-temperature properties of B-enriched single-crystal CrB as prepared from high-purity Cr and B powder by a solid-state reaction and optical float zoni…
Spin dynamics of the bilinear-biquadratic Heisenberg model on the triangular lattice: a quantum Monte Carlo study
Annika Völl, Stefan Wessel
We study thermodynamic properties as well as the dynamical spin and quadrupolar structure factors of the O(3)-symmetric spin-1 Heisenberg model with bilinear-biquadratic exchange i…
Band Structure and Terahertz Optical Conductivity of Transition Metal Oxides: Theory and Application to CaRuO
Hung T. Dang, Jernej Mravlje, Antoine Georges +1
Density functional plus dynamical mean field calculations are used to show that in transition metal oxides, rotational and tilting (GdFeO-type) distortions of the ideal cubic p…
Spin and thermal conductivity of quantum spin ladders
C. Karrasch, D. M. Kennes, F. Heidrich-Meisner
We study the spin and thermal conductivity of spin-1/2 ladders at finite temperature. This is relevant for experiments with quantum magnets. Using a state-of-the-art density matrix…
Chiral projected entangled-pair state with topological order
Shuo Yang, Thorsten B. Wahl, Hong-Hao Tu +2
We show that projected entangled-pair states (PEPS) can describe chiral topologically ordered phases. For that, we construct a simple PEPS for spin-1/2 particles in a two-dimension…
The generic fixed point model for pseudo-spin-1/2 quantum dots in nonequilibrium: Spin-valve systems with compensating spin polarizations
Stefan Göttel, Frank Reininghaus, Herbert Schoeller
We study a pseudo-spin-1/2 quantum dot in the cotunneling regime close to the particle-hole symmetric point. For a generic tunneling matrix we find a generic fixed point with inter…