Universal non-linear conductivity near to an itinerant-electron ferromagnetic quantum critical point

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dc.creatorHogan, P. M.
dc.creatorGreen, A. G.
dc.date2006-07-20
dc.date2008-05-21
dc.date.accessioned2026-07-07T10:16:40Z
dc.date.available2026-07-07T10:16:40Z
dc.descriptionWe study the conductivity in itinerant-electron systems near to a magnetic quantum critical point. We show that, for a class of geometries, the universal power-law dependence of resistivity upon temperature may be reflected in a universal non-linear conductivity; when a strong electric field is applied, the resulting current has a universal power-law dependence upon the applied electric field. For a system with thermal equilibrium current proportional to $T^α$ and dynamical exponent $z$, we find a non-linear resistivity proportional to $E^{\frac{z-1}{z(1+α)-1}}$.
dc.description14 pages, 1 figure, REVTeX 4; v4 substantially reworked and expanded, with an explicit presentation of the technical details
dc.identifierhttps://arxiv.org/abs/cond-mat/0607522
dc.identifierhttp://arxiv.org/abs/cond-mat/0607522
dc.identifierPhys. Rev. B 78, 195104 (2008)
dc.identifierdoi:10.1103/PhysRevB.78.195104
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173588
dc.subjectStrongly Correlated Electrons
dc.titleUniversal non-linear conductivity near to an itinerant-electron ferromagnetic quantum critical point
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