494 citations · 2k across the 25 of their papers we have counts for
15 papers · 1 filter
Spin dynamics in the skyrmion-host lacunar spinel GaV4S8
G. Pokharel, H. Suriya Arachchige, S. Gao +10
In the lacunar spinel GaV4S8, the interplay of spin, charge, and orbital degrees of freedom produces a rich phase diagram that includes an unusual Neel-type skyrmion phase composed…
Non-magnetic ion site disorder effects on the quantum magnetism of a spin-1/2 equilateral triangular lattice antiferromagnet
Q. Huang, R. Rawl, W. W. Xie +12
With the motivation to study how non-magnetic ion site disorder affects the quantum magnetism of Ba3CoSb2O9, a spin-1/2 equilateral triangular lattice antiferromagnet, we performed…
A Local Quantum Phase Transition in YFeAl
W. J. Gannon, L. S Wu, I. A. Zaliznyak +5
A phase transition occurs when correlated regions of a new phase grow to span the system and the fluctuations within the correlated regions become long-lived. Here we present neutr…
Continuum of quantum fluctuations in a three-dimensional Heisenberg magnet
K. W. Plumb, Hitesh J. Changlani, A. Scheie +7
Conventional crystalline magnets are characterized by symmetry breaking and normal modes of excitation called magnons with quantized angular momentum . Neutron scattering co…
The nature of spin excitations in the one-third magnetization plateau phase of BaCoSbO
Y. Kamiya, L. Ge, Tao Hong +10
Magnetization plateaus in quantum magnets---where bosonic quasiparticles crystallize into emergent spin superlattices---are spectacular yet simple examples of collective quantum ph…
Magnetic order in -RuCl: a honeycomb lattice quantum magnet with strong spin-orbit coupling
J. A. Sears, M. Songvilay, K. W. Plumb +5
We report magnetic and thermodynamic properties of single crystal -RuCl, in which the Ru () ion is in its low spin state and forms a honeycomb lattice. Two feat…
Quasiparticle-continuum level repulsion in a quantum magnet
K. W. Plumb, Kyusung Hwang, Y. Qiu +7
When the energy eigenvalues of two coupled quantum states approach each other in a certain parameter space, their energy levels repel each other and level crossing is avoided. Such…
Magnetic structure of Yb2Pt2Pb: Ising moments on the Shastry-Sutherland Lattice
W. Miiller, L. S. Wu, M. S. Kim +14
Neutron diffraction measurements were carried out on single crystals and powders of Yb2Pt2Pb, where Yb moments form planes of orthogonal dimers in the frustrated Shastry-Sutherland…
Strong competition between orbital-ordering and itinerancy in a frustrated spinel vanadate
J. Ma, J. H. Lee, S. E. Hahn +11
The crossover from localized- to itinerant-electron behavior is associated with many intriguing phenomena in condensed-matter physics. In this paper, we investigate the crossover f…
Order by Disorder Spin Wave Gap in the XY Pyrochlore Magnet Er2Ti2O7
K. A. Ross, Y. Qiu, J. R. D. Copley +2
The recent determination of a robust spin Hamiltonian for the anti-ferromagnetic XY pyrochlore Er2Ti2O7 reveals a most convincing case of the "order by quantum disorder" (ObQD) mec…
Coexisting Magnetic Order and Cooperative Paramagnetism in the Stuffed Pyrochlore Tb_{2+x}Ti_{2-2x}Nb_xO_7
B. G. Ueland, J. S. Gardner, A. J. Williams +6
Neutron scattering and magnetization measurements have been performed on the stuffed pyrochlore system Tb2+xTi2-2xNbxO7. We find that despite the introduction of chemical disorder…
Two Dimensional Kagome Correlations and Field Induced Order in the Ferromagnetic XY Pyrochlore Yb2Ti2O7
K. A. Ross, J. P. C. Ruff, C. P. Adams +5
Neutron scattering measurements show the ferromagnetic XY pyrochlore Yb2Ti2O7 to display strong quasi-two dimensional (2D) spin correlations at low temperature, which give way to l…
Itinerant spin excitations near the hidden order transition in URu2Si2
J. A. Janik, H. D. Zhou, Y. -J. Jo +12
By means of neutron scattering we show that the high-temperature precursor to the hidden order state of the heavy fermion superconductor URuSi exhibits heavily damped i…
Excitations from a Bose-Einstein condensate of magnons in coupled spin ladders
V. O. Garlea, A. Zheludev, T. Masuda +9
The weakly coupled quasi-one-dimensional spin ladder compound (CH)CHNHCuCl is studied by neutron scattering in magnetic fields exceeding the critical field of Bose-…
Spin fluctuations in a magnetically frustrated metal, LiV2O4
S. -H. Lee, Y. Qiu, C. Broholm +2
Inelastic neutron scattering is used to characterize spin fluctuations in the -electron heavy fermion spinel . The spin relaxation rate, , for Å$^{-1}…