Wolowiec, C.T.Fang, Y.McElroy, C.A.Jeffries, J.R.Stillwell, R.L.Svanidze, E.Santiago, J.M.Morosan, E.Weir, S.T.Vohra, Y.K.Maple, M.B.2017-07-252017-07-252017Wolowiec, C.T., Fang, Y., McElroy, C.A., et al.. "Pressure effects in the itinerant antiferromagnetic metal TiAu." <i>Physical Review B,</i> 95, no. 21 (2017) American Physical Society: https://doi.org/10.1103/PhysRevB.95.214403.https://hdl.handle.net/1911/95222We report the pressure dependence of the Néel temperature T N up to P ≈ 27 GPa for the recently discovered itinerant antiferromagnet (IAFM) TiAu. The T N ( P ) phase boundary exhibits unconventional behavior in which the Néel temperature is enhanced from T N ≈ 33 K at ambient pressure to a maximum of T N ≈ 35 K occurring at P ≈ 5.5 GPa. Upon a further increase in pressure, T N is monotonically suppressed to ∼ 22 K at P ≈ 27 GPa. We also find a crossover in the temperature dependence of the electrical resistivity ρ in the antiferromagnetic (AFM) phase that is coincident with the peak in T N ( P ) , such that the temperature dependence of ρ = ρ 0 + A n T n changes from n ≈ 3 during the enhancement of T N to n ≈ 2 during the suppression of T N . Based on an extrapolation of the T N ( P ) data to a possible pressure-induced quantum critical point, we estimate the critical pressure to be P c ≈ 45 GPa.engArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.Journal articlePressure_effectshttps://doi.org/10.1103/PhysRevB.95.214403