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The magnetic properties of the two-dimensional, S=1 honeycomb antiferromagnet BaNi$_2$V$_2$O$_8$ have been comprehensively studied using DC susceptibility measurements and inelastic neutron scattering techniques. The magnetic excitation…

Strongly Correlated Electrons · Physics 2018-01-04 E. S. Klyushina , B. Lake , A. T. M. N. Islam , J. T. Park , A. Schneidewind , T. Guidi , E. A. Goremychkin , B. Klemke , M. Månsson

We have obtained new inelastic neutron scattering (INS) data for the molecular magnet Mn12-acetate which exhibit at least six magnetic peaks in the energy range 5-35 meV. These are compared with a microscopic Heisenberg model for the 12…

Strongly Correlated Electrons · Physics 2007-05-23 A. Honecker , N. Fukushima , B. Normand , G. Chaboussant , H. -U. Guedel

Sr$_{3}$ZnIrO$_{6}$ is an effective spin one-half Mott insulating iridate belonging to a family of magnets which includes a number of quasi-one dimensional systems as well as materials exhibiting three dimensional order. Here we present the…

Strongly Correlated Electrons · Physics 2020-05-19 P. A. McClarty , A. D. Hillier , D. T. Adroja D. D. Khalyavin , S. Rayaprol , P. Manuel , W. Kockelmann , E. V. Sampathkumaran

We investigate the magnetic properties of three Mn$_6$ single molecule magnets by means of inelastic neutron scattering and frequency domain magnetic resonance spectroscopy. The experimental data reveal that small structural distortions of…

We performed high resolution diffraction and inelastic neutron scattering measurements of Mn_{12}-acetate. Using a very high energy resolution, we could separate the energy levels corresponding to the splitting of the lowest S multiplet.…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 I. Mirebeau , M. Hennion , H. Casalta , H. Andres , H. U. Güdel , A. V. Irodova , A. Caneschi

We perform inelastic neutron scattering measurements on the molecular nanomagnet Mn_12-acetate to measure the excitation spectrum up to 45meV (500K). We isolate magnetic excitations in two groups at 5-6.5meV (60-75K) and 8-10.5meV…

Strongly Correlated Electrons · Physics 2007-05-23 G. Chaboussant , A. Sieber , S. Ochsenbein , H. -U. Guedel , M. Murrie , A. Honecker , N. Fukushima , B. Normand

The response of vortex state to the magnetic field in Nb3Sn is probed using muon spin rotation and small-angle neutron scattering. A transformation of vortex structure between hexagonal and squared lattice is observed over a relatively low…

The low temperature dependence of the nuclear magnetic resonance frequency and spin-lattice relaxation rate measured in the chiral magnet MnSi by Yasuoka and coworkers [J. Phys. Soc. Jpn. 85, 073701 (2016)] is interpreted in terms of…

Strongly Correlated Electrons · Physics 2021-07-06 P. Dalmas de Reotier , A. Yaouanc

Spin waves in chiral magnetic materials are strongly influenced by the Dzyaloshinskii-Moriya interaction resulting in intriguing phenomena like non-reciprocal magnon propagation and magnetochiral dichroism. Here, we study the non-reciprocal…

Magnetoelectric properties are studied by a combined experimental and theoretical study of a quasi-two-dimensional material composed of square cupolas, Ba(TiO)Cu$_4$(PO$_4$)$_4$. The magnetization is measured up to above the saturation…

We report inelastic neutron scattering measurements of the magnetic excitations in SrFe2As2, the parent of a family of iron-based superconductors. The data extend throughout the Brillouin zone and up to energies of ~260meV. An analysis with…

Strongly Correlated Electrons · Physics 2011-06-17 R. A. Ewings , T. G. Perring , J. Gillett , S. D. Das , S. E. Sebastian , A. E. Taylor , T. Guidi , A. T. Boothroyd

The scenario of a metal-insulator transition driven by the onset of antiferromagnetic order in NaOsO$_3$ calls for a trustworthy derivation of the underlying effective spin Hamiltonian. To determine the latter we rely on {\it ab initio}…

We employ density functional theory within a non-collinear framework to investigate the magnetic properties of the octanuclear molecular rings Cr$_8$ and V$_8$. Our aim is to generalize the evaluation of the effective magnetic interactions…

Materials Science · Physics 2026-04-28 Maria Barbara Maccioni , Elia Stocco , Luca Binci , Andrea Floris , Matteo Cococcioni

Inelastic neutron scattering from superconducting (SC) Ba(Fe$_{0.926}$Co$_{0.074}$)$_2$As$_2$ reveals anisotropic and quasi-two-dimensional (2D) magnetic excitations close to \textbf{Q}$_{\texttt{AFM}}=({1}{2}/{1}{2})$ - the 2D…

Inelastic neutron scattering is used to study the magnetic excitations of the $S=1$ square-lattice antiferromagnet La$_2$NiO$_4$. We find that the spin waves cannot be described by a simple classical (harmonic) Heisenberg model with only…

Strongly Correlated Electrons · Physics 2023-08-23 A. N. Petsch , N. S. Headings , D. Prabhakaran , A. I. Kolesnikov , C. D. Frost , A. T. Boothroyd , R. Coldea , S. M. Hayden

Inelastic neutron scattering experiments with a large set of comounted Na$_2$IrO$_3$ crystals reveal the low-energy magnon dispersion in this candidate material for Kitaev physics. The magnon gap amounts to 1.7(1) meV and can be interpreted…

Strongly Correlated Electrons · Physics 2026-03-06 Alexandre Bertin , Hengdi Zhao , Gang Cao , Andrea Piovano , Paul Steffens , Alexandre Ivanov , Markus Braden

The detailed anisotropy of the low-temperature, low-energy magnetic excitations of the candidate spin-triplet superconductor UTe$_2$ is revealed using inelastic neutron scattering. The magnetic excitations emerge from the Brillouin zone…

$^7$Li nuclear magnetic resonance (NMR) and terahertz (THz) spectroscopies are used to probe magnetic excitations and their field dependence in the hyperhoneycomb Kitaev magnet $\beta$-Li$_2$IrO$_3$. Spin-lattice relaxation rate ($1/T_1$)…

Strongly Correlated Electrons · Physics 2020-06-16 M. Majumder , M. Prinz-Zwick , S. Reschke , A. Zubtsovskii , T. Dey , F. Freund , N. Büttgen , A. Jesche , I. Kézsmárki , A. A. Tsirlin , P. Gegenwart

Here we present inelastic neutron scattering measurements from the frustrated, quantum spin-1/2 chain material linarite, PbCuSO_4(OH)_2. Time of flight data, taken at 0.5K and zero applied magnetic field reveals low-energy dispersive spin…

Sr$_2$CuTeO$_6$ presents an opportunity for exploring low-dimensional magnetism on a square lattice of $S=1/2$ Cu$^{2+}$ ions. We employ ab initio multi-reference configuration interaction calculations to unravel the Cu$^{2+}$ electronic…