135 citations · 501 across the 24 of their papers we have counts for
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Magnetic excitations and exchange parameters of a nickel chain compound PbMnNiTeO: Neutron scattering and density functional theory studies
S. Uthayakumar, D. T. Adroja, Amit Pokhriyal +10
We have investigated the quasi-one dimensional Ni-chain compound PbMnNiTeO using theoretical DFT calculations, inelastic neutron scattering and optical spectrosc…
Field and Polarization Dependent Quantum Spin Dynamics in Honeycomb Magnet NaCoTeO: Magnetic Excitations and Continuum
Patrick Pilch, Laur Peedu, Anup Kumar Bera +4
We report terahertz spectroscopic measurements of quantum spin dynamics in the spin-1/2 honeycomb magnet NaCoTeO as a function of applied magnetic field with different…
Emergent many-body composite excitations of interacting spin-1/2 trimers
A. K. Bera, S. M. Yusuf, S. K. Saha +4
Understanding exotic forms of magnetism in quantum spin systems is an emergent topic of modern condensed matter physics. Quantum dynamics can be described by particle-like carriers…
Magnetism of the 2D honeycomb layered Na2Ni2TeO6 compound driven by intermediate Na-layer crystal-structure
A. K. Bera, S. M. Yusuf, L. Keller +2
The microscopic spin-spin correlations in the 2D layered spin-1 honeycomb lattice compound Na2Ni2TeO6 have been investigated by neutron diffraction and inelastic neutron scattering…
Non-Abelian statistics in light scattering processes across interacting Haldane chains
Vladimir Gnezdilov, Vladimir Kurnosov, Yurii Pashkevich +6
The Haldane state is constructed from a product of local singlet dimers in the bulk and topological states at the edges of a chain. It is a fundamental representative of topo…
Dispersions of Many-Body Bethe strings
Anup Kumar Bera, Jianda Wu, Wang Yang +9
Complex bound states of magnetic excitations, known as Bethe string, were predicted almost a century ago to exist in one-dimensional quantum magnets 1. The dispersions of the strin…