Martin Mourigal

Spin Dynamics of the Spin-1 Triangular Lattice Heisenberg Antiferromagnet K 2 Ni ( SeO 3 ) 2

Anonymous, Sathvik Nallapati, E. A. Ghioldi, Long Chen et autres

Strong quantum fluctuations dominate the spin-1/2 triangular lattice Heisenberg antiferromagnet, but their survival at spin-1 remains an open question. We address it in K_{2}Ni(SeO_{3})_{2}, a nearly ideal spin-1 realization, using inelastic neutron scattering. Below the ordering temperature T_{N}, coherent one-magnon excitations coexist …

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Field-induced quasi-bound state within the two-magnon continuum of a square-lattice Heisenberg antiferromagnet

Martin Må̊nsson, Frank Elson, Mithilesh Nayak, Alexander Eberharter et autres

se, ch, de, dk, gb, us (code pays fourni par la source)

Sunny.jl: A Julia Package for Spin Dynamics

David Dahlbom, Hao Zhang, Cole Miles, Sam Quinn et autres

Sunny is a Julia package designed to serve the needs of the quantum magnetism community.It supports the specification of a very broad class of spin models and a diverse suite of numerical solvers.These include powerful methods for simulating spin dynamics both in …

us, cn, gb (code pays fourni par la source)

Sharp spectroscopic fingerprints of disorder in an incompressible magnetic state

Chaebin Kim, S.K. Rathi, Naipeng Zhang, Arnab Seth et autres

Disorder significantly impacts the electronic properties of conducting quantum materials by inducing electron localization and thus altering the local density of states and electric transport. In insulating quantum magnetic materials, the effects of disorder are less understood and can drastically impact fluctuating …

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Magneto-Optical Study of Chiral Magnetic Modes in NiI$_{2}$: Direct Evidence for Kitaev Interactions

K. Panda, Chaebin Kim, Daniel Bazyliansky, Javier Taboada‐Gutiérrez et autres

Bond-dependent magnetic interactions, particularly those described by the Kitaev model, have emerged as a key pathway toward realizing unconventional magnetic states such as quantum spin liquids and topologically nontrivial excitations, including skyrmions. These interactions frustrate conventional magnetic order and give rise to …

Canted magnetism, spin interactions, and anisotropic magnetodielectric response in CoTeMo O 6

Chetan Dhital, Chaebin Kim, Brady Wilson, Ram Rai et autres

We investigate the chiral magnet $\mathrm{CoTeMo}{\mathrm{O}}_{6}$ (CTMO), an orthorhombic $\mathrm{P}{2}_{1}{2}_{1}2$ system with a canted antiferromagnetic structure and weak ferromagnetism along the $a$ axis. Despite lacking a unique polar axis in its crystal structure, CTMO exhibits significant magnetodielectric coupling, which is consistent with …

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Phonon spectrum in the spin-Peierls phase of CuGeO 3

Leonie Spitz, Aleksandar Razpopov, Sananda Biswas, Harry Lane et autres

CuGeO 3 has long been studied as a prototypical example of the spin-Peierls transition in a S = 1 / 2 Heisenberg chain. Despite intensive investigation of this quasi-one-dimensional material, systematic measurements and calculations of the phonon excitations in the dimerized phase …

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Calculated phonon spectrum and superexchange interactions in the dimerized phase of CuGeO3

Leonie Spitz, Aleksandar Razpopov, S. Biswas, Harry Lane et autres

CuGeO$_3$ has long been studied as a prototypical example of the spin-Peierls transition in a $S = 1/2$ Heisenberg chain. Despite intensive investigation of this quasi-one-dimensional material, systematic measurements and calculations of the phonon excitations in the dimerized phase have not to …

Sharp spectroscopic fingerprints of disorder in an incompressible magnetic state

Chaebin Kim, S.K. Rathi, Naipeng Zhang, Arnab Seth et autres

Disorder significantly impacts the electronic properties of conducting quantum materials by inducing electron localization and thus altering the local density of states and electric transport. In insulating quantum magnetic materials, the effects of disorder are less understood and can drastically impact fluctuating …

Neutron Scattering in High Magnetic Fields: Community Recommendations to Seize the Moment for Scientific Breakthroughs

Stuart Calder, C. Broholm, Despina Louca, Martin Mourigal et autres

This report was prepared as an account of work sponsored by an

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Thermally induced mimicry of quantum cluster excitations and implications for the magnetic transition in FePSe 3

Harry Lane, Martin Mourigal

In two dimensional magnets, the interplay of thermal fluctuations and spin anisotropy control the existence of long-range magnetic order. In the van der Waals antiferromagnets FePX 3 , orbital degeneracy in the t 2 g levels of the Fe 2 + ions …

gb, us (code pays fourni par la source)

Classical signatures of quenched and thermal disorder in the dynamics of correlated spin systems

Harry Lane, Kipton Barros, Martin Mourigal

Neutron scattering is frequently used to look for evidence of features indicative of quantum-entangled phases of matter such as continua from fractionalisation or quantised excitations. However, the non-specificity of these features and difficulty of both fully quantum treatments and semiclassical models of …

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