@article{a350e17ccc724cea863e39851e745dd4,
title = "Antiferromagnetic and orbital ordering on a diamond lattice near quantum criticality",
abstract = "We present neutron scattering measurements on powder samples of the spinel FeSc2S4 that reveal a previously unobserved magnetic ordering transition occurring at 11.8(2) K. Magnetic ordering occurs subsequent to a subtle cubic-to-tetragonal structural transition that distorts Fe coordinating sulfur tetrahedra and lifts the orbital degeneracy. The orbital ordering is not truly long ranged, but occurs over finite-sized domains that limit magnetic correlation lengths. The application of 1 GPa hydrostatic pressure appears to destabilize this N{\'e}el state, reducing the transition temperature to 8.6(8) K and redistributing magnetic spectral weight to higher energies. The relative magnitudes of ordered 〈m〉2 = 3.1(2) μB2 B and fluctuating moments 〈δm〉 1/4 13(1)μB2B show that the magnetically ordered state of FeSc2S4 is drastically renormalized and close to criticality.",
author = "Plumb, {K. W.} and Morey, {J. R.} and Rodriguez-Rivera, {J. A.} and Hui Wu and Podlesnyak, {A. A.} and McQueen, {T. M.} and Broholm, {C. L.}",
year = "2016",
doi = "10.1103/PhysRevX.6.041055",
language = "English",
volume = "6",
journal = "Physical Review X",
issn = "2160-3308",
publisher = "American Physical Society",
number = "4",
}