Jonathan Gaudet

TL;DR: The low-energy inelastic neutron scattering measurements show a dynamic quantum spin ice state, with suppressed scattering near |Q|=0, and no long-range order at low temperatures, consistent with recent theory predicting symmetry-enriched U(1) quantum spin liquids for such DO doublets decorating the pyrochlore lattice.

TL;DR: The ground state of the quantum spin ice candidate magnet Yb2Ti2O7 is known to be sensitive to weak disorder at the similar to 1% level which occurs in single crystals grown from the melt.

TL;DR: In this article, the authors used time-of-flight neutron spectroscopy to determine the crystalline electric field (CEF) Hamiltonian, eigenvalues and eigenvectors appropriate to the $J=7/2 {\mathrm{Yb}}^{3+}$ ion in the candidate quantum spin ice pyrochlore magnet.

TL;DR: In this paper, the authors discover a new ferromagnetic Weyl semimetal by combining first-principles calculations with various experimental techniques and reveal a new loop Hall effect that is induced purely by the proximity of the material's Fermi level to its Weyl nodes.

TL;DR: In this paper, the authors present an experimental summary of the ground state properties of the XY pyrochlores, including evidence that they are strongly influenced by phase competition, and empirically demonstrate the signatures for phase competition in a frustrated magnet: multiple heat capacity anomalies, suppressed $T_N$ or$T_C$, sample and pressure dependent ground states, and unconventional spin dynamics.