35 citations · 133 across the 19 of their papers we have counts for
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Approaching the Inverse Neutron Scattering Problem with Neural Networks
Jingyi Luo, Fletcher Williams, Ang-Kun Wu +3
Determining the microscopic Hamiltonian of a quantum magnet from inelastic neutron scattering measurements remains a central challenge in condensed matter physics. While the dynami…
Layer Architecture Shapes Electronic, Magnetic, and Lattice Interactions in Ruddlesden-Popper Nickelates
W. He, X. Guo, X. Luo +18
The discovery of superconductivity in Ruddlesden-Popper nickelates has raised a central question: how does layer architecture shape the electronic, magnetic, and lattice interactio…
Observation geometry for uncertainty-aware Hamiltonian inference and experimental design in quantum magnets
Roy Liu, Venugopal Ranganathan, David Dahlbom +12
Determining microscopic interactions from spectroscopic and scattering measurements is central to understanding quantum materials, yet it often remains unclear which interactions c…
Tunable Skyrmions in a Topological Wigner Crystal
David A. Dahlbom, Daniel Kaplan, Premala Chandra +1
In low density systems with strong interactions electrons are expected to crystallize into a Wigner solid. Recently, advances in two-dimensional systems where electrons carry Berry…
The 6H-Perovskite Dimer Lattice with Antiferromagnetic Interactions: BaARuO
Daniel M. Pajerowski, David A. Dahlbom, Daniel Phelan +2
We investigate the magnetic behavior of the 6H-perovskite dimer lattice BaZnCaRuO using analytical theory, density functional theory, inelastic neutron scat…
Skyrmions of Frustrated Quantum Dimer Systems
Fletcher Williams, David Dahlbom, Hao Zhang +3
Magnetic skyrmions are topologically protected solitons observed in various classes of real magnets. In two-dimensional systems, where the target space of local magnetization value…
Quantum entanglement of XY-type spin dimers in Shastry-Sutherland lattice
Qianli Ma, Brianna R. Billingsley, Madalynn Marshall +8
We report a comprehensive study on the origin of the enigmatic disordered ground state within the Shastry-Sutherland lattice, BaCeZnS, at low temperatures. The magnetizatio…
Classical dynamics of the antiferromagnetic Heisenberg spin ladder
David A. Dahlbom, Jinu Thomas, Steven Johnston +2
We employ a classical limit grounded in SU(4) coherent states to investigate the temperature-dependent dynamical spin structure factor of the ladder consisting of weakly…
Quantum and classical spin dynamics across temperature scales in the S = 1/2 Heisenberg antiferromagnet
Pyeongjae Park, G. Sala, Daniel M. Pajerowski +6
Using the framework of semi-classical Landau-Lifshitz dynamics (LLD), we conduct a systematic investigation of the temperature-dependent spin dynamics in the S = 1/2 Heisenberg squ…
Kernel Polynomial Method for Linear Spin Wave Theory
Harry Lane, Hao Zhang, David Dahlbom +5
Calculating dynamical spin correlations is essential for matching model magnetic exchange Hamiltonians to momentum-resolved spectroscopic measurements. A major numerical bottleneck…
Quantum to classical crossover in generalized spin systems -- the temperature-dependent spin dynamics of FeI
D. Dahlbom, D. Brooks, M. S. Wilson +9
Simulating quantum spin systems at finite temperatures is an open challenge in many-body physics. This work studies the temperature-dependent spin dynamics of a pivotal compound, F…
Renormalized Classical Theory of Quantum Magnets
David Dahlbom, Hao Zhang, Zoha Laraib +3
We derive a renormalized classical spin (RCS) theory for quantum magnets by constraining a generalized classical theory that includes all multipolar fluctuations to a red…
Cubic Double Perovskites Host Noncoplanar Spin Textures
Joseph A. M. Paddison, Hao Zhang, Jiaqiang Yan +8
Magnetic materials with noncoplanar magnetic structures can show unusual physical properties driven by nontrivial topology. Topologically-active states are often multi-q structures…
Field-induced spin level crossings within a quasi-XY antiferromagnetic state in BaFeSiO
Minseong Lee, Rico Schoenemann, Hao Zhang +11
We present a high-field study of the strongly anisotropic easy-plane square lattice = 2 quantum magnet BaFeSiO. This compound is a rare high-spin antiferromag…
Langevin dynamics of generalized spins as SU() coherent states
David Dahlbom, Cole Miles, Hao Zhang +2
Classical models of spin systems traditionally retain only the dipole moments, but a quantum spin state will frequently have additional structure. Spins of magnitude have $N=2S…
Understanding temperature-dependent SU() spin dynamics in the antiferromagnet BaFeSiO
Seung-Hwan Do, Hao Zhang, David A. Dahlbom +9
Quantum magnets admit more than one classical limit and -level systems with strong single-ion anisotropy are expected to be described by a classical approximation based on SU($N…
Geometric integration of classical spin dynamics via a mean-field Schrödinger equation
David Dahlbom, Hao Zhang, Cole Miles +3
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 th…
CP Skyrmions and Skyrmion Crystals in Realistic Quantum Magnets
Hao Zhang, Zhentao Wang, David Dahlbom +2
Magnetic skyrmions are nanoscale topological textures that have been recently observed in different families of quantum magnets. These textures are known as CP skyrmions becaus…