Title of article :
X-Ray effects in charge-ordered manganites: a magnetic mechanism of persistent photoconductivity
Author/Authors :
Keimer، نويسنده , , B and Casa، نويسنده , , D and Kiryukhin، نويسنده , , V and Saleh، نويسنده , , O.A and Hill، نويسنده , , J.P and Tomioka، نويسنده , , Y and Tokura، نويسنده , , Y، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
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.
Keywords :
X-ray diffraction , Colossal magnetoresistance , Persistent photoconductivity , Hot electrons
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
