Zobrazeno 1 - 10
of 1 127
pro vyhledávání: '"Chapon, L"'
Autor:
Cathelin, V., Lefrançois, E., Robert, J., Guruciaga, P. C., Paulsen, C., Prabhakaran, 1 D., Lejay, P., Damay, F., Ollivier, J., Fåk, B., Chapon, L. C., Ballou, R., Simonet, V., Holdsworth, P. C. W., Lhotel, E.
Publikováno v:
Phys. Rev. Research 2, 032073 (2020)
Neutron scattering, specific heat and magnetisation measurements on both powders and single crystals reveal that Dy$_2$Ir$_2$O$_7$ realizes the fragmented monopole crystal state in which antiferromagnetic order and a Coulomb phase spin liquid co-inha
Externí odkaz:
http://arxiv.org/abs/2005.08807
Autor:
Stock, C., Johnson, R. D., Giles-Donovan, N., Songvilay, M., Rodriguez-Rivera, J. A., Lee, N., Xu, X., Radaelli, P. G., Chapon, L. C., Bombardi, A., Cochran, S., Niedermayer, Ch., Schneidewind, A., Husges, Z., Lu, Z., Meng, S., Cheong, S. -W.
Publikováno v:
Phys. Rev. B 100, 134429 (2019)
Ba$_{3}$NbFe$_{3}$Si$_{2}$O$_{14}$ (langasite) is structurally and magnetically single domain chiral with the magnetic helicity induced through competing symmetric exchange interactions. Using neutron scattering, we show that the spin-waves in antife
Externí odkaz:
http://arxiv.org/abs/1910.01977
Autor:
Lefrançois, E., Mangin-Thro, L., Lhotel, E., Robert, J., Petit, S., Cathelin, V., Fischer, H. E., Colin, C. V., Damay, F., Ollivier, J., Lejay, P., Chapon, L. C., Simonet, V., Ballou, R.
Publikováno v:
Phys. Rev. B 99, 060401 (2019)
The influence of a staggered molecular field in frustrated rare-earth pyrochlores, produced via the magnetic iridium occupying the transition metal site, can generate exotic ground states, such as the fragmentation of the magnetization in the Ho comp
Externí odkaz:
http://arxiv.org/abs/1808.08756
Autor:
Gao, S., Guratinder, K., Tsurkan, V., Loidl, A., Hatnean, M. Ciomaga, Balakrishnan, G., Raymond, S., Chapon, L., Garlea, V. O., Savici, A. T., Stuhr, U., White, J. S., Mansson, M., Roessli, B., Cervellino, A., Bombardi, A., Chernyshov, D., Fennell, T., Ruegg, Ch., Haraldsen, J. T., Zaharko, O.
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 the ground state is lifted by a magneto-structural transition at TN=12
Externí odkaz:
http://arxiv.org/abs/1803.01703
Autor:
Honda, T., White, J. S., Harris, A. B., Chapon, L. C., Fennell, A., Roessli, B., Zaharko, O., Murakami, Y., Kenzelmann, M., Kimura, T.
Publikováno v:
Nature Communications 8, 15457 (2017)
Despite remarkable progress in developing multifunctional materials, spin-driven ferroelectrics featuring both spontaneous magnetization and electric polarization are still rare. Among such ferromagnetic ferroelectrics are conical spin spiral magnets
Externí odkaz:
http://arxiv.org/abs/1706.02363
Autor:
Lefrançois, E., Cathelin, V., Lhotel, E., Robert, J., Lejay, P., Colin, C. V., Canals, B., Damay, F., Ollivier, J., Fåk, B., Chapon, L. C., Ballou, R., Simonet, V.
The complexity embedded in condensed matter fertilizes the discovery of new states of matter, enriched by ingredients like frustration. Illustrating examples in magnetic systems are Kitaev spin liquids, skyrmions phases, or spin ices. These unconvent
Externí odkaz:
http://arxiv.org/abs/1702.02864
Autor:
Holbein, S., Ackermann, M., Chapon, L., Steffens, P., Gukasov, A., Sazonov, A., Breunig, O., Sanders, Y., Becker, P., Bohaty, L., Lorenz, T., Braden, M.
Publikováno v:
Phys. Rev. B 94, 104423 (2016)
The crystal structure of the double tungstate NaFe(WO$_4$)$_2$ arises from that of the spin-driven multiferroic MnWO$_4$ by inserting non-magnetic Na layers. NaFe(WO$_4$)$_2$ exhibits a three-dimensional incommensurate spin-spiral structure at low te
Externí odkaz:
http://arxiv.org/abs/1609.01849
Autor:
Pregelj, M., Zaharko, O., Herak, M., Gomilsek, M., Zorko, A., Chapon, L. C., Bourdarot, F., Berger, H., Arčon, D.
Publikováno v:
Phys. Rev. B 94, 081114(R) (2016)
We investigate the spin-stripe mechanism responsible for the peculiar nanometer modulation of the incommensurate magnetic order that emerges between the vector-chiral and the spin-density-wave phase in the frustrated zigzag spin-1/2 chain compound $\
Externí odkaz:
http://arxiv.org/abs/1608.04495
Autor:
Johnson, R. D., Khalyavin, D. D., Manuel, P., Bombardi, A., Martin, C., Chapon, L. C., Radaelli, P. G.
Publikováno v:
Phys. Rev. B 93, 180403 (2016)
Through a combination of neutron diffraction and Landau theory we describe the spin ordering in the ground state of the quadruple perovskite manganite CaMn7O12 - a magnetic multiferroic supporting an incommensurate orbital density wave that onsets ab
Externí odkaz:
http://arxiv.org/abs/1604.07747
Autor:
Singh, S., D'Souza, S. W., Suard, E., Chapon, L., Senyshyn, A., Petricek, V., Skourski, Y., Nicklas, M., Felser, C., Chadov, S.
Publikováno v:
Nature Communications, 2016
Here we present the tetragonal stoichiometric Heusler compound Pt$_2$MnGa with the noncollinear AFM order stable up to 350 K. It is resolved by the neutron diffraction as a helical spiral propagating along the tetragonal axis. Ab-initio calculations
Externí odkaz:
http://arxiv.org/abs/1604.07137