@article{hemmida_role_2024,

title = {Role of magnetic anisotropy in the antiskyrmion-host schreibersite magnets},

author = {M. Hemmida and J. Masell and K. Karube and D. Ehlers and H. -A. Krug von Nidda and V. Tsurkan and Y. Tokura and Y. Taguchi and I. Kézsmárki},

doi = {10.1103/PhysRevB.110.054416},

year  = {2024},

date = {2024-08-08},

urldate = {2024-08-08},

journal = {Phys. Rev. B},

volume = {110},

number = {5},

pages = {054416},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{buttgen_magnetic_2024,

title = {Magnetic resonance in quantum spin chains with competing exchange interactions},

author = {N. Büttgen and H. -A. Krug von Nidda},

doi = {10.1088/1751-8121/ad5e4c},

year  = {2024},

date = {2024-07-18},

urldate = {2024-07-01},

journal = {J. Phys. A: Math. Theor.},

volume = {57},

number = {31},

pages = {313001},

abstract = {Based on a previous review on magnetic resonance in quantum spin chains (Krug von Nidda et al 2010 Eur. Phys. J. Spec. Top. 180 161–89) we report on further development in this field with special focus on transition–metal oxides and halogenides consisting of quasi one–dimensional spin systems, where both intra–and inter–chain exchange interaction may give rise to frustration effects and higher–order anisotropic exchange contributions like the Dzyaloshinskii–Moriya interaction become decisive for the formation of the magnetic ground state. Selected examples show how NMR and ESR contribute valuable information on the magnetic phases and exchange interactions involved: LiCuVO4 with competing nearest neighbour and next–nearest neighbour intra–chain exchange, LiCu2O2 with complex zig–zag chains, and Cs2CuCl4 where the chains form a triangular lattice with the inter–chain interaction weaker but of the same order of magnitude than the intra–chain interaction. The so called paper–chain compound Ba3Cu3In4O12, where each successive pair of CuO4 plaquettes is rotated by 90° with respect to its predecessor along the c–direction like in a paper–chain, provides an interesting topology of frustrated intra–chain exchange interactions. Finally, a few dimer systems are considered.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{hirschberger_lattice-commensurate_2024,

title = {Lattice-commensurate skyrmion texture in a centrosymmetric breathing kagome magnet},

author = {M. Hirschberger and B. G. Szigeti and M. Hemmida and M. M. Hirschmann and S. Esser and H. Ohsumi and Y. Tanaka and L. Spitz and S. Gao and K. K. Kolincio and H. Sagayama and H. Nakao and Y. Yamasaki and L. Forró and H. -A. Krug von Nidda and I. Kézsmárki and T. Arima and Y. Tokura},

doi = {10.1038/s41535-024-00654-2},

year  = {2024},

date = {2024-05-23},

urldate = {2024-05-01},

journal = {npj Quantum Mater.},

volume = {9},

pages = {45},

abstract = {Skyrmion lattices (SkL) in centrosymmetric materials typically have a magnetic period on the nanometer-scale, so that the coupling between magnetic superstructures and the underlying crystal lattice cannot be neglected. We reveal the commensurate locking of a SkL to the atomic lattice in Gd3Ru4Al12 via high-resolution resonant elastic x-ray scattering (REXS). Weak easy-plane magnetic anisotropy, demonstrated here by a combination of ferromagnetic resonance and REXS, penalizes placing a skyrmion core on a site of the atomic lattice. Under these conditions, a commensurate SkL, locked to the crystal lattice, is stable at finite temperatures – but gives way to a competing incommensurate ground state upon cooling. We discuss the role of Umklapp-terms in the Hamiltonian for the formation of this lattice-locked state, its magnetic space group, and the role of slight discommensurations, or (line) defects in the magnetic texture. We also contrast our findings with the case of SkLs in noncentrosymmetric material platforms.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{toth_broadband_2023,

title = {Broadband magnetic resonance spectroscopy in MnSc_{2}S_{4}},

author = {B. Tóth and K. Amelin and T. Rõõm and U. Nagel and A. Bauernfeind and V. Tsurkan and L. Prodan and H. -A. Krug von Nidda and M. Scheffler and I. Kézsmárki and others},

doi = {10.1038/s41598-023-37911-6},

year  = {2023},

date = {2023-01-01},

urldate = {2023-01-01},

journal = {Sci. Rep.},

volume = {13},

number = {1},

pages = {11069},

abstract = {Recent neutron scattering experiments suggested that frustrated magnetic interactions give rise to antiferromagnetic spiral and fractional skyrmion lattice phases in MnSc2S4. Here, to trace the signatures of these modulated phases, we studied the spin excitations of MnSc2S4 by THz spectroscopy at 300 mK and in magnetic fields up to 12 T and by broadband microwave spectroscopy at various temperatures up to 50 GHz. We found a single magnetic resonance with frequency linearly increasing in field. The small deviation of the Mn2+ ion g-factor from 2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}