title: Theory of strain-controlled magnetotransport and stabilization of the ferromagnetic insulating phase in manganite thin films.
abstract: We show that applying strain on half-doped manganites makes it possible to tune the system to the proximity of a metal-insulator transition and thereby generate a colossal magnetoresistance (CMR) response. This phase competition not only allows control of CMR in ferromagnetic metallic manganites but can be used to generate CMR response in otherwise robust insulators at half-doping. Further, from our realistic microscopic model of strain and magnetotransport calculations within the Kubo formalism, we demonstrate a striking result of strain engineering that, under tensile strain, a ferromagnetic charge-ordered insulator, previously inaccessible to experiments, becomes stable.
authors.affiliation: Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada and Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.
authors.forename: Anamitra
authors.initials: A
authors.lastname: Mukherjee
authors.affiliation: Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.
authors.forename: William S
authors.initials: WS
authors.lastname: Cole
authors.affiliation: Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, USA.
authors.forename: Patrick
authors.initials: P
authors.lastname: Woodward
authors.affiliation: Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.
authors.forename: Mohit
authors.initials: M
authors.lastname: Randeria
authors.affiliation: Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.
authors.forename: Nandini
authors.initials: N
authors.lastname: Trivedi