Field-Induced Crossover and Colossal Magnetoresistance in La(0.7)Pb(0.3)MnO(3)

Дата и время публикации : 2000-02-29T23:37:05Z

Авторы публикации и институты :
Y. Y. Xue (Texas Center for Superconductivity, University of Houston, Houston TX)
B. Lorenz (Texas Center for Superconductivity, University of Houston, Houston TX)
A. K. Heilman (Texas Center for Superconductivity, University of Houston, Houston TX)
M. Gospodinov (Bulgarian Academy of Sciences, Sofia Bulgaria)
S. G. Dobreva (Bulgarian Academy of Sciences, Sofia Bulgaria)
C. W. Chu (Texas Center for Superconductivity, University of Houston, Houston TX, Lawrence Berkeley National Laboratory, Berkeley CA)

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 4 pages, 3 figures, submitted to PRL
Первичная категория: cond-mat.str-el

Все категории : cond-mat.str-el

Краткий обзор статьи: A field-induced crossover is observed in the resistivity and magnetization (M) of a La(0.7)Pb(0.3)MnO(3) single crystal. The field-dependence of the resistivity and M suggests that a small spin-canted species with mean-field-like interactions dominates at low fields (H), whereas, individual spins and 3D Ising/Heisenberg models describe the high-H behavior rather well. Around the ferromagnetic transition, an H-induced destruction of the small spin-canted magnetic polarons is accompanied by large magnetoresistance.

Category: Physics