Zobrazeno 1 - 10
of 204
pro vyhledávání: '"Rüegg, Ch"'
Autor:
Wehinger, B., Lisandrini, F. T., Kestin, N., Bouillot, P., Ward, S., Biner, D., Bewley, R., Krämer, K. W., Normand, B., Kollath, C., Giamarchi, T., Läuchli, A. M., Rüegg, Ch.
Supersymmetry is an algebraic property of a class of quantum Hamiltonians, a guiding principle used in the development of nuclear theory and a concept that may underpin physics beyond the Standard Model. In condensed matter, any symmetry between boso
Externí odkaz:
http://arxiv.org/abs/2408.12626
Autor:
Allenspach, S., Madsen, A., Biffin, A., Bartkowiak, M., Prokhnenko, O., Gazizulina, A., Liu, X., Wahle, R., Gerischer, S., Kempfer, S., Heller, P., Smeibidl, P., Mira, A., Laflorencie, N., Mila, F., Normand, B., Rüegg, Ch.
Publikováno v:
PhysRevB.106.104418 (2022)
BaCuSi$_2$O$_6$ is a quasi-two-dimensional (2D) quantum antiferromagnet containing three different types of stacked, square-lattice bilayer hosting spin-1/2 dimers. Although this compound has been studied extensively over the last two decades, the cr
Externí odkaz:
http://arxiv.org/abs/2207.12445
Publikováno v:
Physical Review Letters 129, 127201 (2022)
CrBr$_3$ is an excellent realization of the two-dimensional honeycomb ferromagnet, which offers a bosonic equivalent of graphene with Dirac magnons and topological character. We perform inelastic neutron scattering (INS) measurements using state-of-t
Externí odkaz:
http://arxiv.org/abs/2204.11355
Autor:
Guratinder, K., Tsurkan, V., Prodan, L., Keller, L., Embs, J. P., Juranyi, F., Medarde, M., Rüegg, Ch., Zaharko, O.
We report the magnetic properties of $A$-site spinel compound MnSc$_2$Se$_4$. The macroscopic magnetic measurements uncovers successive magnetic transitions at $T_{\rm{N1}}$= 2.04 K, followed by two further transitions at $T_{\rm{N2}}$=1.8 K and $T_{
Externí odkaz:
http://arxiv.org/abs/2204.00677
Autor:
Guratinder, K., Schmidt, M., Walker, H. C., Bewley, R., Wörle, M., Cabra, D., Osorio, S. A., Villalba, M., Madsen, A. K., Keller, L., Wildes, A., Puphal, P., Cervellino, A., Rüegg, Ch., Zaharko, O.
The crystal structure and magnetic correlations in triangular antiferromagnet FeGa$_2$S$_4$ are studied by x-ray diffraction, magnetic susceptibility, neutron diffraction and neutron inelastic scattering. We report significant mixing at the cation si
Externí odkaz:
http://arxiv.org/abs/2107.06904
Autor:
Hänni, N. P., Sheptyakov, D., Mena, M., Hirtenlechner, E., Keller, L., Stuhr, U., Regnault, L. -P., Medarde, M., Cervellino, A., Rüegg, Ch., Normand, B., Krämer, K. W.
Publikováno v:
Phys. Rev. B 103, 094424 (2021)
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 spectrometers have made it possible to control the environment of coupled Ising
Externí odkaz:
http://arxiv.org/abs/2102.01099
Autor:
Jiménez, J. Larrea, Crone, S. P. G., Fogh, E., Zayed, M. E., Lortz, R., Pomjakushina, E., Conder, K., Läuchli, A. M., Weber, L., Wessel, S., Honecker, A., Normand, B., Rüegg, Ch., Corboz, P., Rønnow, H. M., Mila, F.
Publikováno v:
Nature {\bf 592}, 370 (2021)
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 pressures terminates at the critical point, a concept ubiquitous in s
Externí odkaz:
http://arxiv.org/abs/2009.14492
Autor:
Allenspach, S., Biffin, A., Stuhr, U., Tucker, G. S., Ohira-Kawamura, S., Kofu, M., Voneshen, D. J., Boehm, M., Normand, B., Laflorencie, N., Mila, F., Rüegg, Ch.
Publikováno v:
Phys. Rev. Lett. 124, 177205 (2020)
The dimerized quantum magnet BaCuSi$_2$O$_6$ was proposed as an example of "dimensional reduction" arising near the magnetic-field-induced quantum critical point (QCP) due to perfect geometrical frustration of its inter-bilayer interactions. We demon
Externí odkaz:
http://arxiv.org/abs/1911.04161
Autor:
Guratinder, K., Rau, Jeffrey G., Tsurkan, V., Ritter, C., Embs, J., Fennell, T., Walker, H. C., Medarde, M., Shang, T., Cervellino, A., Rüegg, Ch., Zaharko, O.
Publikováno v:
Phys. Rev. B 100, 094420 (2019)
We study magnetic behaviour of the Yb$^{3+}$ ions on a frustrated pyrochlore lattice in the spinel {\CYS}. The crystal-electric field parameters deduced from high-energy inelastic neutron scattering reveal well-isolated ytterbium ground state doublet
Externí odkaz:
http://arxiv.org/abs/1908.09510
Autor:
Skoulatos, M., Rucker, F., Nilsen, G. J., Bertin, A., Pomjakushina, E., Ollivier, J., Schneidewind, A., Georgii, R., Zaharko, O., Keller, L., Rüegg, Ch., Pfleiderer, C., Schmidt, B., Shannon, N., Kriele, A., Senyshyn, A., Smerald, A.
Publikováno v:
Phys. Rev. B 100, 014405 (2019)
We report neutron scattering and AC magnetic susceptibility measurements of the 2D spin-1/2 frustrated magnet BaCdVO(PO$_{4}$)$_{2}$. At temperatures well below $T_{\sf N}\approx 1K$, we show that only 34 % of the spin moment orders in an up-up-down-
Externí odkaz:
http://arxiv.org/abs/1903.12462