title: Non-metallic, non-Fermi-liquid resistivity of FeCrAs from 0 to 17 GPa.
abstract: An unusual, non-metallic resistivity of the 111 iron-pnictide compound FeCrAs is shown to be relatively unchanged under pressures of up to 17 GPa. Combined with our previous finding that this non-metallic behaviour persists from at least 80 mK to 800 K, this shows that the non-metallic phase is exceptionally robust. Antiferromagnetic order, with a Néel temperature TN ∼ 125 K at ambient pressure, is suppressed by pressure at a rate of 7.0 ± 0.4 K GPa(-1), falling to ∼50 K at 10 GPa. We conclude that the formation of a spin-density-wave gap at TN does not play an important role in the non-metallic resistivity of FeCrAs at low temperatures.
authors.affiliation: Department of Physics, University of Toronto, 60 St. George Street, Toronto, ON, M5S 1A7, Canada. fazel.fallah.tafti@usherbrooke.ca
authors.forename: F F
authors.initials: FF
authors.lastname: Tafti
authors.forename: W
authors.initials: W
authors.lastname: Wu
authors.forename: S R
authors.initials: SR
authors.lastname: Julian