Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Toft, A. R."'
Autor:
Klausz, M., Kanaki, K., Kittelmann, T., Toft-Petersen, R., Birk, J. O., Olsen, M. A., Zagyvai, P., Hall-Wilton, R. J.
The European Spallation Source (ESS) is intended to become the most powerful spallation neutron source in the world and the flagship of neutron science in the upcoming decades. The exceptionally high neutron flux will provide unique opportunities for
Externí odkaz:
http://arxiv.org/abs/2004.00335
Autor:
Lass, J., Andersen, Ch. Røhl, Leerberg, H. K., Birkemose, S., Toth, S., Stuhr, U., Bartkowiak, M., Niedermayer, Ch., Lu, Zhilun, Toft-Petersen, R., Retuerto, M., Birk, J. Okkels, Lefmann, K.
Publikováno v:
Phys. Rev. B 101, 054415 (2020)
Using single crystal neutron scattering we show that the magnetic structure Ni$_3$TeO$_6$ at fields above 8.6 T along the $c$ axis changes from a commensurate collinear antiferromagnetic structure with spins along c and ordering vector $Q_C$= (0 0 1.
Externí odkaz:
http://arxiv.org/abs/1909.13734
Autor:
Ueland, B. G., Kreyssig, A., Mun, E. D., Lynn, J. W., Harriger, L. W., Pratt, D. K., Prokeš, K., Hüsges, Z., Toft-Petersen, R., Sauerbrei, S., Sanders, S. M., Furukawa, Y., Bud'ko, S. L., McQueeney, R. J., Canfield, P. C., Goldman, A. I.
Publikováno v:
Phys. Rev. B 99, 184431 (2019)
We present neutron diffraction data for the cubic-heavy-fermion YbBiPt that show broad magnetic diffraction peaks due to the fragile short-range antiferromagnetic (AFM) order persist under an applied magnetic-field $\mathbf{H}$. Our results for $\mat
Externí odkaz:
http://arxiv.org/abs/1905.03829
Autor:
Jacobsen, H., Holm, S. L., Lacatusu, M. -E., Rømer, A. T., Bertelsen, M., Boehm, M., Toft-Petersen, R., Grivel, J. -C., Emery, S. B., Udby, L., Wells, B. O., Lefmann, K.
Publikováno v:
Phys. Rev. Lett. 120, 037003 (2018)
We present detailed neutron scattering studies of the static and dynamic stripes in an optimally doped high-temperature superconductor, La$_2$CuO$_{4+y}$. We find that the dynamic stripes do not disperse towards the static stripes in the limit of van
Externí odkaz:
http://arxiv.org/abs/1704.08528
Autor:
Babkevich, P., Jeong, M., Matsumoto, Y., Kovacevic, I., Finco, A., Toft-Petersen, R., Ritter, C., Månsson, M., Nakatsuji, S., Rønnow, H. M.
Publikováno v:
Phys. Rev. Lett. 116, 197202 (2016)
We report ac susceptibility, specific heat, and neutron scattering measurements on a dipolar-coupled antiferromagnet LiYbF$_4$. For the thermal transition, the order-parameter critical exponent is found to be 0.20(1) and the specific-heat critical ex
Externí odkaz:
http://arxiv.org/abs/1605.03443
Autor:
Andersen, K.H., Argyriou, D.N, Jackson, A.J., Houston, J., Henry, P.F., Deen, P.P., Toft-Petersen, R., Beran, P., Strobl, M., Arnold, T., Wacklin-Knecht, H., Tsapatsaris, N., Oksanen, E., Woracek, R., Schweika, W., Mannix, D., Hiess, A., Kennedy, S., Kirstein, O., Petersson Årsköld, S., Taylor, J., Hagen, M.E., Laszlo, G., Kanaki, K., Piscitelli, F., Khaplanov, A., Stefanescu, I., Kittelmann, Th., Pfeiffer, D., Hall-Wilton, R., Lopez, C.I., Aprigliano, G., Whitelegg, L., Moreira, F.Y., Olsson, M., Bordallo, H.N., Martín-Rodríguez, D., Schneider, H., Sharp, M., Hartl, M., Nagy, G., Ansell, S., Pullen, S., Vickery, A., Fedrigo, A., Mezei, F., Arai, M., Heenan, R.K., Halcrow, W., Turner, D., Raspino, D., Orszulik, A., Cooper, J., Webb, N., Galsworthy, P., Nightingale, J., Langridge, S., Elmer, J., Frielinghaus, H., Hanslik, R., Gussen, A., Jaksch, S., Engels, R., Kozielewski, T., Butterweck, S., Feygenson, M., Harbott, P., Poqué, A., Schwaab, A., Lieutenant, K., Violini, N., Voigt, J., Brückel, T., Koenen, M., Kämmerling, H., Babcock, E., Salhi, Z., Wischnewski, A., Heynen, A., Désert, S., Jestin, J., Porcher, F., Fabrèges, X., Fabrèges, G., Annighöfer, B., Klimko, S., Dupont, Th., Robillard, Th., Goukassov, A., Longeville, S., Alba-Simionesco, Ch., Bourges, Ph., Guyon Le Bouffy, J., Lavie, P., Rodrigues, S., Calzada, E., Lerche, M., Schillinger, B., Schmakat, Ph., Schulz, M., Seifert, M., Lohstroh, W., Petry, W., Neuhaus, J., Loaiza, L., Tartaglione, A., Glavic, A., Schütz, S., Stahn, J., Lehmann, E., Morgano, M., Schefer, J., Filges, U., Klauser, Ch., Niedermayer, Ch., Fenske, J., Nowak, G., Rouijaa, M., Siemers, D.J., Kiehn, R., Müller, M., Carlsen, H., Udby, L., Lefmann, K., Birk, J.O., Holm-Dahlin, S., Bertelsen, M., Hansen, U. Bengaard, Olsen, M.A., Christensen, M., Iversen, K., Christensen, N.B., Rønnow, H.M., Freeman, P.G., Hauback, B.C., Kolevatov, R., Llamas-Jansa, I., Orecchini, A., Sacchetti, F., Petrillo, C., Paciaroni, A., Tozzi, P., Zanatta, M., Luna, P., Herranz, I., del Moral, O.G., Huerta, M., Magán, M., Mosconi, M., Abad, E., Aguilar, J., Stepanyan, S., Bakedano, G., Vivanco, R., Bustinduy, I., Sordo, F., Martínez, J.L., Lechner, R.E., Villacorta, F.J., Šaroun, J., Lukáš, P., Markó, M., Zanetti, M., Bellissima, S., del Rosso, L., Masi, F., Bovo, C., Chowdhury, M., De Bonis, A., Di Fresco, L., Scatigno, C., Parker, S.F., Fernandez-Alonso, F., Colognesi, D., Senesi, R., Andreani, C., Gorini, G., Scionti, G., Schreyer, A.
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A 21 March 2020 957
Autor:
Roemer, A. T., Jensen, P., Jacobsen, H., Udby, L., Andersen, B. M., Bertelsen, M., Holm, S. L., Christensen, N. B., Toft-Petersen, R., Skoulatos, M., Laver, M., Schneidewind, A., Link, P., Oda, M., Ido, M., Momono, N., Lefmann, K.
Publikováno v:
Phys. Rev. B 91, 174507 (2015)
We present neutron scattering studies of the inter-planar correlations in the high-temperature superconductor La1.88Sr0.12CuO4 (T_c=27 K). The correlations are studied both in a magnetic field applied perpendicular to the CuO2 planes, and in zero fie
Externí odkaz:
http://arxiv.org/abs/1412.7329
Autor:
Udby, L., Larsen, J., Christensen, N. B., Boehm, M., Niedermayer, Ch., Mohottala, H. E., Jensen, T. B. S., Toft-Petersen, R., Chou, F. C., Andersen, N. H., Lefmann, K., Wells, B. O.
Publikováno v:
Phys. Rev. Lett. 111, 227001 (2013)
We present a combined magnetic neutron scattering and muon spin rotation study of the nature of the magnetic and superconducting phases in electronically phase separated La(2-x)Sr(x)CuO(4+y), x = 0.04, 065, 0.09. For all samples, we find long-range m
Externí odkaz:
http://arxiv.org/abs/1306.2155
Autor:
Le, M. D., Quintero-Castro, D. L., Toft-Petersen, R., Groitl, F., Skoulatos, M., Rule, K. C., Habicht, K.
Publikováno v:
Nucl. Instrum. Methods Phys. Res. A, 729 (2013) 220-226
The upgrade of the cold neutron triple-axis spectrometer FLEXX is described. We discuss the characterisation of the gains from the new primary spectrometer, including a larger guide and double focussing monochromator, and present measurements of the
Externí odkaz:
http://arxiv.org/abs/1305.1126
Autor:
Dutton, S. E., Kumar, M., Mourigal, M., Soos, Z. G., Wen, J. -J., Broholm, C. L., Andersen, N. H., Huang, Q., Zbiri, M., Toft-Petersen, R., Cava, R. J.
Publikováno v:
Phys. Rev. Lett. 108, 187206 (2012)
A quantum magnet, LiCuSbO4, with chains of edge-sharing S = 1/2 CuO6 octahedra is reported. While the Curie-Weiss constant is ferromagnetic, \theta = 30 K, no phase transition or spin freezing occurs down to 100 mK. Specific heat indicates a distinct
Externí odkaz:
http://arxiv.org/abs/1109.4061