Skyrmions; Magnetism; Entanglement; quantum magnetism; neutron scattering
Ivashko O., Horio M., Wan W., Christensen N. B., McNally D. E., Paris E., Tseng Y., Shaik N. E., Rønnow H. M., Wei H. I., Adamo C., Lichtensteiger C., Gibert M., Beasley M. R., Shen K. M., Tomczak J. M., Schmitt T., Chang J. (2019), Strain-engineering Mott-insulating La2CuO4, in
Nature Communications, 10(1), 786-786.
Larsen C. B., Rømer A. T., Janas S., Treue F., Mønsted B., Shaik N. E., Rønnow H. M., Lefmann K. (2019), Exact diagonalization study of the Hubbard-parametrized four-spin ring exchange model on a square lattice, in
Physical Review B, 99(5), 054432-054432.
Papi Hadi, Favre Virgile Yves, Ahmadvand Hossein, Alaei Mojtaba, Khondabi Mohammad, Sheptyakov Denis, Keller Lukas, Kameli Parviz, Zivkovic Ivica, Ronnow Henrik M. (2019), Magnetic and structural properties of Ni-substituted magnetoelectric Co4Nb2O9, in
PHYSICAL REVIEW B, 100(13), 134408.
Kruchkov A. J., White J. S., Bartkowiak M., Zivkovic I., Magrez A., Ronnow H. M. (2018), Direct electric field control of the skyrmion phase in a magnetoelectric insulator, in
SCIENTIFIC REPORTS, 8, 10466.
Huang Ping, Cantoni Marco, Kruchkov Alex, Rajeswari Jayaraman, Magrez Arnaud, Carbone Fabrizio, Ronnow Henrik M. (2018), In Situ Electric Field Skyrmion Creation in Magnetoelectric Cu2OSeO3, in
NANO LETTERS, 18(8), 5167-5171.
Berruto G., Madan I., Murooka Y., Vanacore G. M., Pomarico E., Rajeswari J., Lamb R., Huang P., Kruchkov A. J., Togawa Y., LaGrange T., McGrouther D., Ronnow H. M., Carbone F. (2018), Laser-Induced Skyrmion Writing and Erasing in an Ultrafast Cryo-Lorentz Transmission Electron Microscope, in
PHYSICAL REVIEW LETTERS, 120(11), 117201.
Yano Shin-ichiro, Lancon Diane, Ronnow Henrik M., Hansen Thomas C., Ressouche Eric, Qureshi Navid, Ouladdiaf Bachir, Gardner Jason S. (2018), Suppression of Magnetic Order before the Superconducting Dome in MnP, in
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 87(2), 023703.
Fatale S., Fatuzzo C. G., Babkevich P., Shaik N. E., Pelliciari J., Lu X., McNally D. E., Schmitt T., Kikkawa A., Taguchi Y., Tokura Y., Normand B., Rønnow H. M., Grioni M. (2017), Electronic and magnetic excitations in the half-stuffed Cu-O planes of Ba2Cu3O4Cl2 measured by resonant inelastic x-ray scattering, in
Physical Review B, 96(11), 115149-115149.
Yang L., Jeong M., Babkevich P., Katukuri V. M., Náfrádi B., Shaik N. E., Magrez A., Berger H., Schefer J., Ressouche E., Kriener M., Živković I., Yazyev O. V., Forró L., Rønnow H. M. (2017), J1−J2 square lattice antiferromagnetism in the orbitally quenched insulator MoOPO4, in
Physical Review B, 96(2), 024445-024445.
Huang Ping, Jayaraman Rajeswari, Murooka Yoshie, Cantoni Marco, Magrez Arnaud, Carbone Fabrizio, Ronnow Henrik (2017), How skyrmion lattice forms and arranges, in
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 73(S), 828-828.
Babkevich P., Shaik N. E., Lancon D., Kikkawa A., Enderle M., Ewings R. A., Walker H. C., Adroja D. T., Manuel P., Khalyavin D. D., Taguchi Y., Tokura Y., Soda M., Masuda T., Ronnow H. M. (2017), Magnetic excitations from the two-dimensional interpenetrating Cu framework in Ba2Cu3O4Cl2, in
PHYSICAL REVIEW B, 96(1), 014410.
Ronnow Henrik M., Babkevich Peter, Testa Luc, Kimura Kenta, Tucker Gregory S., Roessli Bertrand, Kimura Tsuyoshi (2017), Magnetic quadrupolar order in the chiral square cupola compound BaTiOCu4(PO4)(4), in
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 73(S), 829-829.
Mueller Jan, Rajeswari Jayaraman, Huang Ping, Murooka Yoshie, Ronnow Henrik M., Carbone Fabrizio, Rosch Achim (2017), Magnetic Skyrmions and Skyrmion Clusters in the Helical Phase of Cu2OSeO3, in
PHYSICAL REVIEW LETTERS, 119(13), 137201.
Babkevich P., Testa L., Kimura K., Kimura T., Tucker G. S., Roessli B., Ronnow H. M. (2017), Magnetic structure of Ba(TiO)Cu-4(PO4)(4) probed using spherical neutron polarimetry, in
PHYSICAL REVIEW B, 96(21), 214436.
Lancon D., Walker H. C., Ressouche E., Ouladdiaf B., Rule K. C., McIntyre G. J., Hicks T. J., Ronnow H. M., Wildes A. R. (2016), Magnetic structure and magnon dynamics of the quasi-two-dimensional antiferromagnet FePS3, in
PHYSICAL REVIEW B, 94(21), 214407.
Lancon Diane, Nilsen Goran J., Wildes Andrew R., Nemkovski Kirill, Huang Ping, Fejes Dora, Ronnow Henrik M., Magrez Arnaud (2016), MnO nanoparticles as the cause of ferromagnetism in bulk dilute Mn-doped ZnO, in
APPLIED PHYSICS LETTERS, 109(25), 252405.
Quantum magnetism remains at the forefront of condensed matter physics. On one hand, it pro-vides the ideal arena for developing and testing new fundamental concepts in solid-state and statistical physics, on the other hand it has a pivotal role in several classes of emerging materi-als with new electronic properties.Here we propose three research topics:A Checkerboards - The fundamental 2D Heisenberg model on square and related lattices, ad-vancing understanding of the excitation spectrum and its extension to undoped and weakly doped cupratesB Skyrmions - emergent magnetic objects, which in the magnetoelectric compound Cu2OSeO3 can be controlled by electric fieldsC Dipolar coupled magnetic model systems LiREF4, providing examples of classical and quan-tum criticality, dimensional reduction, electronic-nuclear entanglement etc. The three sub-projects are propelled by four PhD students (3 experimental and 1 theoretical), each acquiring their specialization in respectively scattering techniques, imaging, low-temperature measurements and theory, which they combine in a horizontal cross-subject team structure. For sub-projects A and B, special pivotal expertise in respectively theory and electron microscopy is brought in by the two co-applicants.