Langevin dynamics of generalized spins as SU() coherent states
Classical models of spin systems traditionally retain only the dipole moments, but a quantum
spin state will frequently have additional structure. Spins of magnitude S have N= 2 S+ 1 …
spin state will frequently have additional structure. Spins of magnitude S have N= 2 S+ 1 …
Geometric integration of classical spin dynamics via a mean-field Schrödinger equation
The Landau-Lifshitz equation describes the time evolution of magnetic dipoles and can be
derived by taking the classical limit of a quantum mechanical spin Hamiltonian. To take this …
derived by taking the classical limit of a quantum mechanical spin Hamiltonian. To take this …
Field-tuned quantum renormalization of spin dynamics in the honeycomb lattice Heisenberg antiferromagnet YbCl3
The basis for our understanding of quantum magnetism has been the study of elegantly
simple model systems. However, even for the antiferromagnetic honeycomb lattice with …
simple model systems. However, even for the antiferromagnetic honeycomb lattice with …
Multiferroic quantum material Ba2Cu1−xMnxGe2O7 (0 ≤ x ≤ 1) as a potential candidate for frustrated Heisenberg antiferromagnet
H Thoma, R Dutta, V Hutanu, V Granata… - npj Quantum …, 2024 - nature.com
Abstract Multiferroic Ba2CuGe2O7 was anticipated as a potential member of the exciting
group of materials hosting a skyrmion or vortex lattice because of its profound Dzyaloshinskii …
group of materials hosting a skyrmion or vortex lattice because of its profound Dzyaloshinskii …
Instabilities of heavy magnons in an anisotropic magnet
The search for new elementary particles is one of the most basic pursuits in physics,
spanning from subatomic physics to quantum materials. Magnons are the ubiquitous …
spanning from subatomic physics to quantum materials. Magnons are the ubiquitous …
Understanding temperature-dependent SU(3) spin dynamics in the S = 1 antiferromagnet Ba2FeSi2O7
Quantum magnets admit more than one classical limit and N-level systems with strong
single-ion anisotropy are expected to be described by a classical approximation based on …
single-ion anisotropy are expected to be described by a classical approximation based on …
Field control of quasiparticle decay in a quantum antiferromagnet
S Hasegawa, H Kikuchi, S Asai, Z Wei, B Winn… - Nature …, 2024 - nature.com
Dynamics in a quantum material is described by quantized collective motion: a quasiparticle.
The single-quasiparticle description is useful for a basic understanding of the system …
The single-quasiparticle description is useful for a basic understanding of the system …
Renormalized classical theory of quantum magnets
We derive a renormalized classical spin (RCS) theory for $ S> 1/2$ quantum magnets by
constraining a generalized classical theory that includes all multipolar fluctuations to a …
constraining a generalized classical theory that includes all multipolar fluctuations to a …
Physical properties of the quasi-two-dimensional square lattice antiferromagnet
We report magnetization (χ, M), magnetic specific heat (CM), and neutron powder diffraction
results on a quasi-two-dimensional (2D) S= 2 square lattice antiferromagnet Ba 2 FeSi 2 O 7 …
results on a quasi-two-dimensional (2D) S= 2 square lattice antiferromagnet Ba 2 FeSi 2 O 7 …
Double dome structure of the Bose–Einstein condensation in diluted S = 3/2 quantum magnets
Y Watanabe, A Miyake, M Gen, Y Mizukami… - Nature …, 2023 - nature.com
Bose–Einstein condensation (BEC) in quantum magnets, where bosonic spin excitations
condense into ordered ground states, is a realization of BEC in a thermodynamic limit …
condense into ordered ground states, is a realization of BEC in a thermodynamic limit …