185 citations · 866 across the 16 of their papers we have counts for
16 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 $…
Quantum Phases of the Planar Antiferromagnetic J_1-J_2-J_3 Heisenberg-Model
Johannes Reuther, Peter Wölfle, Rachid Darradi +3
We present results of a complementary analysis of the frustrated planar J_1-J_2-J_3 spin-1/2 quantum-antiferromagnet. Using dynamical functional renormalization group, high-order c…
Field-dependent spin and heat conductivities of dimerized spin-1/2 chains
S. Langer, R. Darradi, F. Heidrich-Meisner +1
We study the spin and heat conductivity of dimerized spin-1/2 chains in homogeneous magnetic fields at finite temperatures. At zero temperature, the model undergoes two field-induc…
The frustrated spin-1/2 J1-J2 Heisenberg ferromagnet on the square lattice: Exact diagonalization and Coupled-Cluster study
J. Richter, R. Darradi, J. Schulenburg +2
We investigate the ground-state magnetic order of the spin-1/2 J1-J2 Heisenberg model on the square lattice with ferromagnetic nearest-neighbor exchange J1<0 and frustrating antife…
The ground-state magnetic ordering of the spin-1/2 frustrated J1-J2 XXZ model on the square lattice
R. Darradi, J. Richter, J. Schulenburg +2
Using the coupled-cluster method for infinite lattices and the exact diagonalization method for finite lattices, we study the influence of an exchange anisotropy Delta on the groun…
Ground-state phases of the spin-1/2 J_1-J_2 Heisenberg antiferromagnet on the square lattice: A high-order coupled cluster treatment
R. Darradi, O. Derzhko, R. Zinke +3
Using the coupled cluster method for high orders of approximation and complementary exact diagonalization studies we investigate the ground state properties of the spin-1/2 --…