113 citations · 219 across the 5 of their papers we have counts for
5 papers
The spin-half Heisenberg antiferromagnet on two Archimedian lattices: From the bounce lattice to the maple-leaf lattice and beyond
D. J. J. Farnell, R. Darradi, R. Schmidt +1
We investigate the ground state of the two-dimensional Heisenberg antiferromagnet on two Archimedean lattices, namely, the maple-leaf and bounce lattices as well as a generalized $…
Enhanced magnetocaloric effect in frustrated magnetic molecules with icosahedral symmetry
J. Schnack, R. Schmidt, J. Richter
We investigate the magnetocaloric properties of certain antiferromagnetic spin systems that have already been or very likely can be synthesized as magnetic molecules. It turns out…
Frustration effects in magnetic molecules
J. Schnack
Besides being a fascinating class of new materials, magnetic molecules provide the opportunity to study concepts of condensed matter physics in zero dimensions. This contribution w…
Square-lattice s=1/2 XY model and the Jordan-Wigner fermions: The ground-state and thermodynamic properties
Oleg Derzhko, Taras Verkholyak, Reimar Schmidt +1
Using the 2D Jordan-Wigner transformation we reformulate the square-lattice s=1/2 XY (XZ) model in terms of noninteracting spinless fermions and examine the ground-state and thermo…
Spin-1/2 J1-J2 model on the body-centered cubic lattice
R. Schmidt, J. Schulenburg, J. Richter +1
Using exact diagonalization (ED) and linear spin wave theory (LSWT) we study the influence of frustration and quantum fluctuations on the magnetic ordering in the ground state of t…