708 citations · 3.3k across the 48 of their papers we have counts for
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Fingerprints of supersymmetric spin and charge dynamics observed by inelastic neutron scattering
Björn Wehinger, Franco T. Lisandrini, Noam Kestin +12
Supersymmetry is an algebraic property of a quantum Hamiltonian that, by giving every boson a fermionic superpartner and vice versa, may underpin physics beyond the Standard Model.…
Investigating field-induced magnetic order in Han Purple by neutron scattering up to 25.9 T
S. Allenspach, A. Madsen, A. Biffin +14
BaCuSiO is a quasi-two-dimensional (2D) quantum antiferromagnet containing three different types of stacked, square-lattice bilayer hosting spin-1/2 dimers. Although this c…
Thermal Evolution of Dirac Magnons in the Honeycomb Ferromagnet CrBr
S. E. Nikitin, B. Fåk, K. W. Krämer +4
CrBr is an excellent realization of the two-dimensional honeycomb ferromagnet, which offers a bosonic equivalent of graphene with Dirac magnons and topological character. We pe…
Magnetic correlations in triangular antiferromagnet FeGaS
K. Guratinder, M. Schmidt, H. C. Walker +12
The crystal structure and magnetic correlations in triangular antiferromagnet FeGaS are studied by x-ray diffraction, magnetic susceptibility, neutron diffraction and neutr…
Magnetic order in the quasi-one-dimensional Ising system RbCoCl
N. P. Hänni, D. Sheptyakov, M. Mena +9
The dynamical properties of free and bound domain-wall excitations in Ising-chain materials have recently become the focus of intense research interest. New materials and spectrome…
Ultrafast Frustration-Breaking and Magnetophononic Driving of Singlet Excitations in a Quantum Magnet
Flavio Giorgianni, Björn Wehinger, Stephan Allenspach +6
Ideal magnetic frustration forms the basis for the emergence of exotic quantum spin states that are entirely nonmagnetic. Such singlet spin states are the defining feature of the S…
A quantum magnetic analogue to the critical point of water
J. Larrea Jiménez, S. P. G. Crone, E. Fogh +13
At the familiar liquid-gas phase transition in water, the density jumps discontinuously at atmospheric pressure, but the line of these first-order transitions defined by increasing…
Fractional antiferromagnetic skyrmion lattice induced by anisotropic couplings
Shang Gao, H. D. Rosales, F. A. Gómez Albarracín +11
Magnetic skyrmions are topological solitons with a nanoscale winding spin texture that hold promise for spintronics applications. Until now, skyrmions have been observed in a varie…
Crystal-electric-field excitations in a quantum-spin-liquid candidate NaErS
Shang Gao, Fan Xiao, Kazuya Kamazawa +5
The delafossite family of compounds with a triangular lattice of rare earth ions has been recently proposed as a candidate host for quantum spin liquid (QSL) states. To realize QSL…
Multiple Magnetic Bilayers and Unconventional Criticality without Frustration in BaCuSiO
S. Allenspach, A. Biffin, U. Stuhr +9
The dimerized quantum magnet BaCuSiO was proposed as an example of "dimensional reduction" arising near the magnetic-field-induced quantum critical point (QCP) due to perfe…
Multi-phase competition in quantum pyrochlore antiferromagnet CdYbSe: zero and applied magnetic field study
K. Guratinder, Jeffrey G. Rau, V. Tsurkan +9
We study magnetic behaviour of the Yb ions on a frustrated pyrochlore lattice in the spinel {\CYS}. The crystal-electric field parameters deduced from high-energy inelastic…
Putative spin-nematic phase in BaCdVO(PO)
M. Skoulatos, F. Rucker, G. J. Nilsen +14
We report neutron scattering and AC magnetic susceptibility measurements of the 2D spin-1/2 frustrated magnet BaCdVO(PO). At temperatures well below $T_{\sf N}\approx 1…
Tomonaga-Luttinger liquid spin dynamics in the quasi-one dimensional Ising-like antiferromagnet BaCoVO
Quentin Faure, Shintaro Takayoshi, Virginie Simonet +8
Combining inelastic neutron scattering and numerical simulations, we study the quasi-one dimensional Ising anisotropic quantum antiferromagnet \bacovo\ in a longitudinal magnetic f…
Thermal control of spin excitations in the coupled Ising-chain material RbCoCl3
M. Mena, N. Hänni, S. Ward +8
We have used neutron spectroscopy to investigate the spin dynamics of the quantum (S = 1/2) antiferromagnetic Ising chains in RbCoCl3. The structure and magnetic interactions in th…
Quantum magnetism in molecular spin ladders probed with muon-spin spectroscopy
T. Lancaster, F. Xiao, B. M. Huddart +10
We present the results of muon-spin spectroscopy (SR) measurements on the molecular spin ladder system (Hpip)CuBrCl, [Hpip=(CHN)]. Using…
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…
Dimensional reduction by pressure in the magnetic framework material CuF(DO)pyz: from spin-wave to spinon excitations
M. Skoulatos, M. Månsson, C. Fiolka +4
Metal organic magnets have enormous potential to host a variety of electronic and magnetic phases that originate from a strong interplay between the spin, orbital and lattice degre…
Observation of two types of anyons in the Kitaev honeycomb magnet
N. Janša, A. Zorko, M. Gomilšek +6
Quantum spin liquid is a disordered magnetic state with fractional spin excitations. Its clearest example is found in an exactly solved Kitaev honeycomb model where a spin flip fra…
Topological quantum phase transition in the Ising-like antiferromagnetic spin chain BaCoVO
Q. Faure, S. Takayoshi, S. Petit +13
Since the seminal ideas of Berezinskii, Kosterlitz and Thouless, topological excitations are at the heart of our understanding of a whole novel class of phase transitions. In most…
Dipolar spin ice states with fast monopole hopping rate in CdErX (X = Se, S)
Shang Gao, Oksana Zaharko, Vladimir Tsurkan +19
Excitations in a spin ice behave as magnetic monopoles, and their population and mobility control the dynamics of a spin ice at low temperature. CdErSe is reported to have…
Bound states and field-polarized Haldane modes in a quantum spin ladder
S. Ward, P. Bouillot, C. Kollath +10
The challenge of one-dimensional systems is to understand their physics beyond the level of known elementary excitations. By high-resolution neutron spectroscopy in a quantum spin…
Electromagnon dispersion probed by inelastic x-ray scattering
Sándor Tóth, Björn Wehinger, Katharina Rolfs +7
Inelastic x-ray scattering with meV energy resolution (IXS) is an ideal tool to measure collective excitations in solids and liquids. In non-resonant scattering condition, the cros…
Magnetic field dependence of excitations near spin-orbital quantum criticality
A. Biffin, Ch. Rüegg, J. Embs +4
The spinel FeScS has been proposed to realize a near-critical spin-orbital singlet (SOS) state, where entangled spin and orbital moments fluctuate in a global singlet state…
Observation of a 4-spin Plaquette Singlet State in the Shastry-Sutherland compound SrCu2(BO3)2
Mohamed E. Zayed, Christian Rüegg, Julio Larrea +17
The study of interacting spin systems is of fundamental importance for modern condensed matter physics. On frustrated lattices, magnetic exchange interactions cannot be simultaneou…