TY - JOUR
AU - M Rajeswari
AU - A Goyal
AU - A.K Raychaudhuri
AU - M.C Robson
AU - G.C Xiong
AU - C Kwon
AU - Ramamoorthy Ramesh
AU - R.L Greene
AU - T Venkatesan
AU - S Lakeou
AB - We report measurements of 1/f electrical noise in two hole doped manganite perovskite oxides, La0.67Ca0.33MnO3 and Pr0.67Sr0.33MnO3, which exhibit colossal magnetoresistance. The noise magnitude represented by the Hooge parameter is nearly 8 orders of magnitude larger than that observed in ordinary metals (and semiconductors) and nearly 5-6 orders of magnitude larger than that observed in epitaxial films of the perovskite oxide YBa2Cu3O7 in the normal state. The normalized noise spectral density increases with decreasing temperature below the resistivity peak, suggestive of the presence of additional low energy noise processes in the ferromagnetic metallic state. © 1996 American Institute of Physics.
BT - Applied Physics Letters
DO - 10.1063/1.117913
LA - eng
M1 - 6
N1 - cited By 50
N2 - We report measurements of 1/f electrical noise in two hole doped manganite perovskite oxides, La0.67Ca0.33MnO3 and Pr0.67Sr0.33MnO3, which exhibit colossal magnetoresistance. The noise magnitude represented by the Hooge parameter is nearly 8 orders of magnitude larger than that observed in ordinary metals (and semiconductors) and nearly 5-6 orders of magnitude larger than that observed in epitaxial films of the perovskite oxide YBa2Cu3O7 in the normal state. The normalized noise spectral density increases with decreasing temperature below the resistivity peak, suggestive of the presence of additional low energy noise processes in the ferromagnetic metallic state. © 1996 American Institute of Physics.
PB - American Institute of Physics Inc.
PY - 1996
SP - 851
EP - 853
T2 - Applied Physics Letters
TI - 1/f electrical noise in epitaxial thin films of the manganite oxides La0.67Ca0.33MnO3 and Pr0.67Sr0.33MnO3
VL - 69
SN - 00036951
ER -