10.9k citations
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7 papers · 2 filters
High temperature onset of field-induced transitions in the spin-ice compound Dy2Ti2O7
M. J. Matthews, C. Castelnovo, R. Moessner +3
We have studied the field-dependent ac magnetic susceptibility of single crystals of Dy2Ti2O7 spin ice along the [111] direction in the temperature range 1.8 K - 7 K. Our data refl…
Origin of the Large Anisotropy in the χ_3 Anomaly in URu_2Si_2
Premala Chandra, Piers Coleman, Rebecca Flint
Motivated by recent quantum oscillations experiments on URu_2Si_2, we discuss the microscopic origin of the large anisotropy observed many years ago in the anomaly of the nonlinear…
β-YbAlB4: a critical nodal metal
Aline Ramires, Piers Coleman, Andriy H. Nevidomskyy +1
We propose a model for the intrinsic quantum criticality of β-YbAlB4, in which a vortex in momentum space gives rise to a new type of Fermi surface singularity. The unquenched angu…
Hastatic Order in URu2Si2
Premala Chandra, Piers Coleman, Rebecca Flint
The development of collective long-range order via phase transitions occurs by the spontaneous breaking of fundamental symmetries. Magnetism is a consequence of broken time-reversa…
Basal-Plane Nonlinear Susceptibility: A Direct Probe of the Single-Ion Physics in URu2Si2
Rebecca Flint, Premala Chandra, Piers Coleman
The microscopic nature of the hidden order state in URu2Si2 is dependent on the low-energy configurations of the uranium ions, and there is currently no consensus on whether it is…
Emergent Critical Phase and Ricci Flow in a 2D Frustrated Heisenberg Model
Peter P. Orth, Premala Chandra, Piers Coleman +1
We introduce a two-dimensional frustrated Heisenberg antiferromagnet on interpenetrating honeycomb and triangular lattices. Classically the two sublattices decouple, and "order fro…
Normal and intrinsic anomalous Hall effect in Nb1-yFe2+y
Sven Friedemann, Manuel Brando, William J Duncan +3
The Hall effect on selected samples of the dilution series Nb1-yFe2+y is studied. Normal and anomalous contributions are observed, with positive normal Hall effect dominating at hi…