Thermal Hall effects in quantum magnets
In the recent years, the thermal Hall transport has risen as an important diagnosis of the
physical properties of the elementary excitations in various quantum materials, especially …
physical properties of the elementary excitations in various quantum materials, especially …
Realization of the Haldane-Kane-Mele model in a system of localized spins
We study a spin Hamiltonian for spin-orbit-coupled ferromagnets on the honeycomb lattice.
At sufficiently low temperatures supporting the ordered phase, the effective Hamiltonian for …
At sufficiently low temperatures supporting the ordered phase, the effective Hamiltonian for …
Plaquette Ordered Phase and Quantum Phase Diagram in the Spin- Square Heisenberg Model
We study the spin-1/2 Heisenberg model on the square lattice with first-and second-
neighbor antiferromagnetic interactions J 1 and J 2, which possesses a nonmagnetic region …
neighbor antiferromagnetic interactions J 1 and J 2, which possesses a nonmagnetic region …
The spin-1/2 J1–J2 Heisenberg antiferromagnet on the square lattice: Exact diagonalization for N=40 spins
J Richter, J Schulenburg - The European Physical Journal B, 2010 - Springer
We present numerical exact results for the ground state and the low-lying excitations for the
spin-1/2 J 1-J 2 Heisenberg antiferromagnet on finite square lattices of up to N= 40 sites …
spin-1/2 J 1-J 2 Heisenberg antiferromagnet on finite square lattices of up to N= 40 sites …
Ground state phases of the spin-1/2 Heisenberg antiferromagnet on the square lattice: A high-order coupled cluster treatment
R Darradi, O Derzhko, R Zinke, J Schulenburg… - Physical Review B …, 2008 - APS
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 J 1–J …
exact diagonalization studies we investigate the ground state properties of the spin-1/2 J 1–J …
Dynamics of K2Ni2(SO4)3 governed by proximity to a 3D spin liquid model
Quantum spin liquids (QSLs) have become a key area of research in magnetism due to their
remarkable properties, such as long-range entanglement, fractional excitations, and …
remarkable properties, such as long-range entanglement, fractional excitations, and …
Dynamical structure factor of the triangular antiferromagnet: Schwinger boson theory beyond mean field
We compute the zero-temperature dynamical structure factor S (q, ω) of the triangular lattice
Heisenberg model (TLHM) using a Schwinger boson approach that includes the Gaussian …
Heisenberg model (TLHM) using a Schwinger boson approach that includes the Gaussian …
Time reversal symmetry breaking chiral spin liquids: Projective symmetry group approach of bosonic mean-field theories
Projective symmetry groups are the mathematical tools which make it possible to list and
classify mean-field spin liquids (SLs) based on a parton construction. The seminal work of …
classify mean-field spin liquids (SLs) based on a parton construction. The seminal work of …
Evidence of two-spinon bound states in the magnetic spectrum of
Recent inelastic neutron scattering (INS) experiments of the triangular antiferromagnet Ba 3
CoSb 2 O 9 revealed strong deviations from semiclassical theories. We demonstrate that key …
CoSb 2 O 9 revealed strong deviations from semiclassical theories. We demonstrate that key …
Quantum disordered phase on the frustrated honeycomb lattice
In the present paper we study the phase diagram of the Heisenberg model on the
honeycomb lattice with antiferromagnetic interactions up to third neighbors along the line J …
honeycomb lattice with antiferromagnetic interactions up to third neighbors along the line J …