Zobrazeno 1 - 10
of 400
pro vyhledávání: '"Mcqueeney, R. J."'
Autor:
Han, Tianxiong, McKenzie, R. D., Blawat, Joanna, Slade, Tyler J., Lee, Y., Pajerowski, D. M., Singleton, John, Li, Bing, Canfield, Paul C., Ke, Liqin, McDonald, Ross, Flint, Rebecca, McQueeney, R. J.
TbV$_6$Sn$_6$ is a topological metal where ferromagnetic Tb ions with strong uniaxial magnetic anisotropy interact with V kagome layers. Inelastic neutron scattering measurements show that the Tb ions adopt an Ising doublet ground state. Here, we con
Externí odkaz:
http://arxiv.org/abs/2412.02010
MnBi$_{4}$Te$_{7}$ belongs to a family of antiferromagnetic topological insulators. It forms a natural heterostructure of magnetic (septuple) and non-magnetic (quintuple) topological blocks. Here, we explore the magnetism and magnetic interactions in
Externí odkaz:
http://arxiv.org/abs/2410.20455
$\textit{R}$Mn$_6$Sn$_6$ ($R=$~Y,~Gd$-$Lu) kagome metals are promising materials hosting flat electronic bands and Dirac points that interact with magnetism. The coupling between the two magnetic $R$ and Mn sublattices can drive complex magnetic stat
Externí odkaz:
http://arxiv.org/abs/2409.04273
Autor:
Ning, Zhenhua, Das, Pinaki, Lee, Y., Sangeetha, N. S., Abernathy, D. L., Johnston, D. C., McQueeney, R. J., Vaknin, D., Ke, Liqin
SrCr$_2$As$_2$ is an itinerant antiferromagnet in the same structural family as the SrFe2As2 high-temperature superconductors. We report our calculations of exchange coupling parameters $J_{ij}$ for SrCr$_2$As$_2$ using a static linear-response metho
Externí odkaz:
http://arxiv.org/abs/2408.05583
Density functional theory (DFT), including its extensions designed to treat strongly correlated localized electron systems such as DFT+$U$ and DFT+dynamical mean field theory, has proven exceedingly useful in studying the magnetic properties of solid
Externí odkaz:
http://arxiv.org/abs/2407.10067
Autor:
Han, Tianxiong, Pakhira, Santanu, Sangeetha, N. S., Riberolles, S. X. M., Heitmann, T. W., Wu, Yan, Johnston, D. C., McQueeney, R. J., Ueland, B. G.
Publikováno v:
Phys. Rev. B 109, 174428 (2024)
We report neutron diffraction results for the body-centered-tetragonal series Eu(Co$_{1-x}$Ni$_x$)$_{2-y}$As$_2$, $x=0.10$, $0.20$, $0.42$, and $0.82$, $y\leq0.10$, that detail changes to the magnetic ordering with nominal hole doping. We report the
Externí odkaz:
http://arxiv.org/abs/2402.06773
Autor:
Das, P., Kreyssig, A., Tucker, G. S., Podlesnyak, A., Ye, Feng, Matsuda, Masaaki, Kong, T., Bud'ko, S. L., Canfield, P. C., Flint, R., Orth, P. P., Yamada, T., McQueeney, R. J., Goldman, A. I.
Publikováno v:
Phys. Rev. B 108, 134421 (2023)
We report on elastic and inelastic neutron scattering from single-grain isotopically-enriched samples to elucidate the local magnetic correlations between Tb$^{3+}$ moments in quasicrystalline i-Tb-Cd. The inelastic neutron scattering measurements of
Externí odkaz:
http://arxiv.org/abs/2308.11680
Autor:
Riberolles, Simon X. M., Han, Tianxiong, Slade, Tyler J., Wilde, J. M., Sapkota, A., Tian, Wei, Zhang, Qiang, Abernathy, D. L., Sanjeewa, L. D., Bud'ko, S. L., Canfield, P. C., McQueeney, R. J., Ueland, B. G.
Publikováno v:
npj Quantum Mater. 9, 42 (2024)
Predicting magnetic ordering in kagome compounds offers the possibility of harnessing topological or flat-band physical properties through tuning of the magnetism. Here, we examine the magnetic interactions and phases of ErMn$_6$Sn$_6$ which belongs
Externí odkaz:
http://arxiv.org/abs/2306.13206
Autor:
Riberolles, S. X. M., Slade, Tyler J., Dally, R. L., Sarte, P. M., Li, Bing, Han, Tianxiong, Lane, H., Stock, C., Bhandari, H., Ghimire, N. J., Abernathy, D. L., Canfield, P. C., Lynn, J. W., Ueland, B. G., McQueeney, R. J.
Ferromagnetic (FM) order in a two-dimensional kagome layer is predicted to generate a topological Chern insulator without an applied magnetic field. The Chern gap is largest when spin moments point perpendicular to the kagome layer, enabling the capa
Externí odkaz:
http://arxiv.org/abs/2303.01613
Autor:
Riberolles, S. X. M., Slade, Tyler J., Han, Tianxiong, Li, Bing, Abernathy, D. L., Canfield, P. C., Ueland, B. G., Orth, P. P., Ke, Liqin, McQueeney, R. J.
Publikováno v:
Nat. Commun. 15, 1592 (2024)
TbMn6Sn6 is a metallic ferrimagnet that displays signatures of band topology arising from a combination of uniaxial ferromagnetism and spin-orbit coupling within its Mn kagome layers. Whereas the low energy magnetic excitations can be described as co
Externí odkaz:
http://arxiv.org/abs/2302.04846