title: Anomalous hall heat current and nernst effect in the CuCr2Se4-xBrx ferromagnet.
abstract: In a ferromagnet, an anomalous Hall heat current, given by the off-diagonal Peltier term alpha(xy), accompanies the anomalous Hall current. By combining Nernst, thermopower, and Hall experiments, we have measured how alpha(xy) varies with hole density and lifetime tau in CuCr2Se4-xBrx. At low temperatures T, we find that alpha(xy) is independent of tau, consistent with anomalous-velocity theories. Its magnitude is fixed by a microscopic geometric area A approximately 34 A(2). Our results are incompatible with some models of the Nernst effect in ferromagnets.
authors.affiliation: Department of Physics, Princeton University, New Jersey 08544, USA.
authors.forename: Wei-Li
authors.initials: WL
authors.lastname: Lee
authors.forename: S
authors.initials: S
authors.lastname: Watauchi
authors.forename: V L
authors.initials: VL
authors.lastname: Miller
authors.forename: R J
authors.initials: RJ
authors.lastname: Cava
authors.forename: N P
authors.initials: NP
authors.lastname: Ong