Steplike Lattice Deformation of Single Crystalline (La$_{0.4}$Pr$_{0.6}$)$_{1.2}$Sr$_{1.8}$Mn$_{2}$O$_{7}$ Bilayered Manganite

M. Matsukawa; Y. Yamato; T. Kumagai; R. Suryanarayanan; S. Nimori

doi:10.1103/PhysRevLett.98.267204

paper

Steplike Lattice Deformation of Single Crystalline (La $_{0.4}$ Pr $_{0.6}$ ) $_{1.2}$ Sr $_{1.8}$ Mn $_{2}$ O $_{7}$ Bilayered Manganite

arXiv:cond-mat/0612445 · doi:10.1103/PhysRevLett.98.267204

Abstract

We report a steplike lattice transformation of single crystalline (La $_{0.4}$ Pr $_{0.6}$ ) $_{1.2}$ Sr $_{1.8}$ Mn $_{2}$ O $_{7}$ bilayered manganite accompanied by both magnetization and magnetoresistive jumps, and examine the ultrasharp nature of the field-induced first-order transition from a paramagnetic insulator to a ferromagnetic metal phase accompanied by a huge decrease in resistance. Our findings support that the abrupt magnetostriction is closely related to an orbital frustration existing in the inhomogeneous paramagnetic insulating phase rather than a martensitic scenario between competing two phases.

5 pages,4figures, v4: figures are changed, in press in Phys.Rev.Lett

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Steplike Lattice Deformation of Single Crystalline (La0.4​Pr0.6​)1.2​Sr1.8​Mn2​O7​ Bilayered Manganite

Abstract

References in corpus (8)

Cited by in corpus (7)

Steplike Lattice Deformation of Single Crystalline (La $_{0.4}$ Pr $_{0.6}$ ) $_{1.2}$ Sr $_{1.8}$ Mn $_{2}$ O $_{7}$ Bilayered Manganite