Zobrazeno 1 - 10
of 571
pro vyhledávání: '"Fåk B"'
Autor:
Stekiel, M., Čermák, P., Franz, C., Meven, M., Legut, D., Simeth, W., Hansen, U. B., Fåk, B., Weber, S., Schönmann, R., Kumar, V., Nemkovski, K., Deng, H., Bauer, A., Pfleiderer, C., Schneidewind, A.
Publikováno v:
Phys. Rev. Research 6, 023117, (2024)
We investigate the effect of structural deformation on the magnetic properties of orthorhombic CePdAl$_3$ in relation to its tetragonal polymorph. Utilizing x-ray and neutron diffraction we establish that the crystal structure has the $Cmcm$ space gr
Externí odkaz:
http://arxiv.org/abs/2405.04318
Autor:
Georgopoulou, M., Boldrin, D., Fåk, B., Manuel, P., Gibbs, A., Ollivier, J., Suard, E., Wills, A. S.
Spin-1/2 kagome materials have recently attracted a resurgence of interest as they are considered an ideal host of the quantum spin liquid (QSL) state, which can underpin functionality such as superconductivity. Here we report the first synthesis and
Externí odkaz:
http://arxiv.org/abs/2306.14739
Autor:
Alexanian, Y., Lhotel, E., Ballou, R., Colin, C. V., Klein, H., Priol, A. Le, Museur, F., Robert, J., Pachoud, E., Lejay, P., Hadj-Azzem, A., Fåk, B., Berrod, Q., Zanotti, J. -M., Suard, E., Dejoie, C., de Brion, S., Simonet, V.
Geometrical frustration, as in pyrochlore lattices made of corner-sharing tetrahedra, precludes the onset of conventional magnetic ordering, enabling the stabilization of fluctuating spin states at low temperature. Disorder is a subtle ingredient tha
Externí odkaz:
http://arxiv.org/abs/2303.05483
Autor:
Wildes, A. R., Fåk, B., Hansen, U. B., Enderle, M., Stewart, J. R., Testa, L., Rønnow, H. M., Kim, C., Park, Je-Geun
The spin waves in single crystals of the layered van der Waals antiferromagnet CoPS$_3$ have been measured using inelastic neutron scattering. The data show four distinct spin wave branches with large ($\gtrsim 14$ meV) energy gaps at the Brillouin z
Externí odkaz:
http://arxiv.org/abs/2212.06479
Autor:
Georgopoulou, M., Fåk, B., Boldrin, D., Stewart, J. R., Ritter, C., Suard, E., Ollivier, J., Wills, A. S.
Neutron scattering measurements have been performed on deuterated powder samples of claringbullite and Zn-doped claringbullite (Zn$_x$Cu$_{4-x}$(OD)$_{6}$FCl). At low temperatures, claringbullite Cu$_4$(OD)$_{6}$FCl forms a distorted pyrochlore latti
Externí odkaz:
http://arxiv.org/abs/2211.08072
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:
Qureshi, N., Wildes, A., Ritter, C., Fåk, B., Riberolles, S. X. M., Hatnean, M. Ciomaga, Petrenko, O. A.
Publikováno v:
Phys. Rev. B 103, 134433 (2021)
We report the low-temperature properties of SrNd$_2$O$_4$, a geometrically frustrated magnet. Magnetisation and heat capacity measurements performed on polycrystalline samples indicate the appearance of a magnetically ordered state at $T_{\rm N}=2.28
Externí odkaz:
http://arxiv.org/abs/2103.10539
Autor:
Le, Manh Duc, Wheeler, Elisa M., Jeong, Jaehong, Kumar, K. Ramesh, Lee, Seongsu, Lee, Chang-Hee, Oh, Myeong Jun, Jo, Youn-Jung, Kondo, Akihiro, Kindo, Koichi, Stuhr, U., Fåk, B., Enderle, M., Batuk, Dmitry, Abakumov, Artem M., Tsirlin, Alexander A., Park, Je-Geun
Publikováno v:
Phys. Rev. B 103, 104423 (2021)
We present inelastic neutron scattering measurements of the Cairo pentagon lattice magnets Bi$_2$Fe$_4$O$_9$ and Bi$_4$Fe$_5$O$_{13}$F, supported by high field magnetisation measurements of Bi$_2$Fe$_4$O$_9$. Using linear spin wave theory and mean fi
Externí odkaz:
http://arxiv.org/abs/2101.06786
Publikováno v:
Phys. Rev. B 103, 104516 (2021)
The dispersion relation $\epsilon(k)$ of the elementary excitations of superfluid $^4$He has been measured at very low temperatures, from saturated vapor pressure up to solidification, using a high flux time-of-flight neutron scattering spectrometer
Externí odkaz:
http://arxiv.org/abs/2012.09067
Autor:
Sandberg, Lise Orduk, Edberg, Richard, Pedersen, Kasper S., Hatnean, Monica Ciomaga, Balakrishnan, Geetha, Mangin-Thro, Lucile, Wildes, Andrew, Fak, B., Ehlers, Georg, Sala, Gabriele, Henelius, Patrik, Lefmann, Kim, Deen, Pascale P.
Publikováno v:
Phys. Rev. B 104, 064425 (2021)
We report neutron scattering, magnetic susceptibility and Monte Carlo theoretical analysis to verify the short range nature of the magnetic structure and spin-spin correlations in a Yb$_3$Ga$_5$O$_{12}$ single crystal. The quantum spin state of Yb$^{
Externí odkaz:
http://arxiv.org/abs/2005.10605