Zobrazeno 1 - 10
of 223
pro vyhledávání: '"Chapon, L. C."'
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:
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:
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 $\
Externí odkaz:
http://arxiv.org/abs/1608.04495
Autor:
Johnson, R. D., Khalyavin, D. D., Manuel, P., Bombardi, A., Martin, C., Chapon, L. C., Radaelli, P. G.
Publikováno v:
Phys. Rev. B 93, 180403 (2016)
Through a combination of neutron diffraction and Landau theory we describe the spin ordering in the ground state of the quadruple perovskite manganite CaMn7O12 - a magnetic multiferroic supporting an incommensurate orbital density wave that onsets ab
Externí odkaz:
http://arxiv.org/abs/1604.07747
Motifs of periodic modulations are encountered in a variety of natural systems, where at least two rival states are present. In strongly correlated electron systems such behaviour has typically been associated with competition between short- and long
Externí odkaz:
http://arxiv.org/abs/1505.03720
Autor:
Lefrançois, E., Pradipto, A. -M., Sala, M. Moretti, Chapon, L. C., Simonet, V., Picozzi, S., Lejay, P., Petit, S., Ballou, R.
Publikováno v:
Phys. Rev. B 93, 224401 (2016)
We report our investigation of the electronic and magnetic excitations of Sr$_3$NiIrO$_6$ by resonant inelastic x-ray scattering at the Ir L$_3$ edge. The intra-$t_{2g}$ electronic transitions are analyzed using an atomic model, including spin-orbit
Externí odkaz:
http://arxiv.org/abs/1504.05420
Autor:
Lefrançois, E., Simonet, V., Ballou, R., Lhotel, E., Hadj-Azzem, A., Kodjikian, S., Lejay, P., Manuel, P., Khalyavin, D., Chapon, L. C.
The magnetic behavior of polycrystalline samples of Er$_2$Ir$_2$O$_7$ and Tb$_2$Ir$_2$O$_7$ pyrochlores is studied by magnetization measurements and neutron diffraction. Both compounds undergo a magnetic transition at 140 and 130 K respectively, asso
Externí odkaz:
http://arxiv.org/abs/1502.00787