@article{ WOS:000680173400001,
Author = {Hester, Gavin and DeLazzer, T. N. and Yahne, D. R. and Sarkis, C. L. and
   Zhao, H. D. and Rivera, J. A. Rodriguez and Calder, S. and Ross, K. A.},
Title = {Magnetic properties of the Ising-like rare earth pyrosilicate:
   D-Er2Si2O7},
Journal = {JOURNAL OF PHYSICS-CONDENSED MATTER},
Year = {2021},
Volume = {33},
Number = {40},
Month = {OCT 6},
Abstract = {Ising-like spin-1/2 magnetic materials are of interest for their ready
   connection to theory, particularly in the context of quantum critical
   behavior. In this work we report detailed studies of the magnetic
   properties of a member of the rare earth pyrosilicate family,
   D-Er2Si2O7, which is known to display a highly anisotropic Ising-like
   g-tensor and effective spin-1/2 magnetic moments. We used powder neutron
   diffraction, powder inelastic neutron spectroscopy (INS), and single
   crystal AC susceptibility to characterize its magnetic properties.
   Neutron diffraction enabled us to determine the magnetic structure below
   the known transition temperature (T (N) = 1.9 K) in zero field,
   confirming that the magnetic state is a four-sublattice
   antiferromagnetic structure with two non-collinear Ising axes, as was
   previously hypothesized. Our powder INS data revealed a gapped
   excitation at zero field, consistent with anisotropic (possibly Ising)
   exchange. An applied field of 1 T produces a mode softening, which is
   consistent with a field-induced second order phase transition. To assess
   the relevance of D-Er2Si2O7 to the transverse field Ising model, we
   performed AC susceptibility measurements on a single crystal with the
   magnetic field oriented in the direction transverse to the Ising axes.
   This revealed a transition at 2.65 T at 0.1 K, a field significantly
   higher than the mode-softening field observed by powder INS, showing
   that the field-induced phase transitions are highly field-direction
   dependent as expected. These measurements suggest that D-Er2Si2O7 may be
   a candidate for further exploration related to the transverse field
   Ising model.},
DOI = {10.1088/1361-648X/ac136a},
Article-Number = {405801},
ISSN = {0953-8984},
EISSN = {1361-648X},
ORCID-Numbers = {Hester, Gavin/0000-0003-1444-4510},
Unique-ID = {WOS:000680173400001},
}