X-ray effects in charge-ordered manganites: A magnetic mechanism of persistent photoconductivity

B. Keimer, D. Casa, V. Kiryukhin, O. A. Saleh, J. P. Hill, Y. Tomioka, Y. Tokura

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

Charge-ordered manganites of composition Pr1-x(Ca1-ySry)xMnO3 exhibit persistent photo-conductivity when illuminated by X-rays. We review transport and X-ray diffraction data as functions of X-ray exposure, magnetic field, and temperature which shed light on the origin of this unusual behavior. The experimental evidence suggests that the mechanism primarily involves a ferromagnetic polarization of local spins by hot electrons generated by the X-rays.

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Science(all)

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