138 citations · 1.7k across the 62 of their papers we have counts for
35 papers · 1 filter
Dipolar spin-waves and tunable band gap at the Dirac points in the 2D magnet ErBr3
C. Wessler, B. Roessli, K. W. Krämer +4
Topological magnon insulators constitute a growing field of research for their potential use as information carriers without heat dissipation. We report an experimental and theoret…
Spin Density Wave versus Fractional Magnetization Plateau in a Triangular Antiferromagnet
L. Facheris, K. Yu. Povarov, S. D. Nabi +7
We report an excellent realization of the highly non-classical incommensurate spin-density wave (SDW) state in the quantum frustrated antiferromagnetic insulator CsCoBr. In…
Observation of plaquette fluctuations in the spin-1/2 honeycomb lattice
C. Wessler, B. Roessli, K. W. Krämer +6
Quantum spin liquids are materials that feature quantum entangled spin correlations and avoid magnetic long-range order at T = 0 K. Particularly interesting are two-dimensional hon…
Dual nature of magnetism in MnSi
A. Yaouanc, P. Dalmas de Reotier, B. Roessli +4
The temperature dependence of the manganese magnetic moment and the spin-lattice relaxation rate measured by the muon spin relaxation technique in the magnetically ordered phase of…
On the robustness of the MnSi magnetic structure determined by muon spin rotation
P. Dalmas de Reotier, A. Yaouanc, A. Amato +6
Muon spin rotation (muSR) spectra recorded for manganese silicide MnSi and interpreted in terms of a quantitative analysis constrained by symmetry arguments were recently published…
Manifolds of magnetic ordered states and excitations in the almost Heisenberg pyrochlore antiferromagnet MgCr2O4
S. Gao, K. Guratinder, V. Tsurkan +18
In spinels ACr2O4 (A=Mg, Zn) realisation of the classical pyrochlore Heisenberg antiferromagnet model is complicated by a strong spin-lattice coupling: the extensive degeneracy of…
Transverse acoustic phonon anomalies at intermediate wavevectors in MgVO
T. Weber, B. Roessli, C. Stock +7
Magnetic spinels (with chemical formula O, with a 3 transition metal ion) that also have an orbital degeneracy are Jahn-Teller active and hence possess a coupl…
Long-range dynamical magnetic order and spin tunneling in the cooperative paramagnetic states of the pyrochlore analogous spinel antiferromagnets CdYb2X4 (X = S, Se)
P. Dalmas de Reotier, C. Marin, A. Yaouanc +6
Magnetic systems with spins sitting on a lattice of corner sharing regular tetrahedra have been particularly prolific for the discovery of new magnetic states for the last two deca…
Magnetic structure of Ba(TiO)Cu(PO) probed using spherical neutron polarimetry
P. Babkevich, L. Testa, K. Kimura +4
The antiferromagnetic compound Ba(TiO)Cu(PO) contains square cupola of corner-sharing CuO plaquettes, which were proposed to form effective quadrupolar order. To id…
Coupled multiferroic domain switching in the canted conical spin spiral system MnGeO
T. Honda, J. S. White, A. B. Harris +7
Despite remarkable progress in developing multifunctional materials, spin-driven ferroelectrics featuring both spontaneous magnetization and electric polarization are still rare. A…
Magnetic structure of the MnGe helimagnet and representation analysis
A. Yaouanc, P. Dalmas de Reotier, A. Maisuradze +1
In the light of recent results obtained for the prototype helimagnet MnSi we examine the possible magnetic structures of compounds of the same family, consistent with the crystal s…
Unconventional magnetic order in the conical state of MnSi
P. Dalmas de Reotier, A. Maisuradze, A. Yaouanc +4
In the temperature-magnetic field phase diagram, the binary metallic compound MnSi exhibits three magnetic phases below Tc ~ 29 K. An unconventional helicoidal phase is observed in…
Spin excitations in the skymion host Cu2OSeO3
G S Tucker, J S White, J Romhányi +10
We have used inelastic neutron scattering to measure the magnetic excitation spectrum along the high-symmetry directions of the first Brillouin zone of the magnetic skyrmion hostin…
Spiral spin-liquid and the emergence of a vortex-like state in MnScS
Shang Gao, Oksana Zaharko, Vladmir Tsurkan +10
Spirals and helices are common motifs of long-range order in magnetic solids, and they may also be organized into more complex emergent structures such as magnetic skyrmions and vo…
Determination of the zero-field magnetic structure of the helimagnet MnSi at low temperature
P. Dalmas de Reotier, A. Maisuradze, A. Yaouanc +4
Below a temperature of approximately 29 K the manganese magnetic moments of the cubic binary compound MnSi order to a long-range incommensurate helical magnetic structure. Here, we…
Effects of quantum impurity spins on the magnetic properties of zigzag and linear spin chains
Koushik Karmakar, Markos Skoulatos, Giacomo Prando +5
We investigated the magnetic ground state and low-energy excitations of the spin chains compounds SrCuO (zigzag chains) and SrCuO (linear chains) in the presence…
A novel type of splayed ferromagnetic order observed in Yb2Ti2O7
A. Yaouanc, P. Dalmas de Reotier, L. Keller +2
The pyrochlore insulator Yb2Ti2O7 has attracted the attention of experimentalists and theoreticians alike for about 15 years. Conflicting neutron diffraction data on the possible e…
Jahn-Teller versus quantum effects in the spin-orbital material LuVO3
M. Skoulatos, S. Toth, B. Roessli +17
We report on combined neutron and resonant x-ray scattering results, identifying the nature of the spin-orbital ground state and magnetic excitations in LuVO3 as driven by the orbi…
Correlated decay of triplet excitations in the Shastry-Sutherland compound SrCu(BO)
M. E. Zayed, Ch. Rüegg, Th. Strässle +8
The temperature dependence of the gapped triplet excitations (triplons) in the 2D Shastry-Sutherland quantum magnet SrCu(BO) is studied by means of inelastic neutron sc…
Magnetic nano-fluctuations in a frustrated magnet
Krunoslav Prsa, Mark Laver, Martin Mansson +18
Frustrated systems exhibit remarkable properties due to the high degeneracy of their ground states. Stabilised by competing interactions, a rich diversity of typically nanometre-si…
Electric field control of chiral magnetic domains in the high-temperature multiferroic CuO
P. Babkevich, A. Poole, R. D. Johnson +3
We have studied the high temperature multiferroic cupric oxide using polarized neutron diffraction as a function of temperature and applied electric field. We find that the chiral…
Inelastic Neutron and X-ray Scattering from Incommensurate Magnetic Systems
Peter Böni, Bertrand Roessli, Klaudia Hradil
Neutrons and X-rays are powerful probes for studying magnetic and lattice excitations in strongly correlated materials over very wide ranges of momentum and energy transfers. In th…
Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering
H. J. Lewtas, A. T. Boothroyd, M. Rotter +6
We present data on the magnetic and magneto-elastic coupling in the hexagonal multiferroic manganite LuMnO3 from inelastic neutron scattering, magnetization and thermal expansion m…
Single magnetic chirality in the magneto-electric NdFe(BO)
M. Janoschek, P. Fischer, J. Schefer +6
We have performed an extensive study of single-crystals of the magneto-electric NdFe(BO) by means of a combination of single-crystal neutron diffraction and sphe…