Colossal electroresistance without colossal magnetoresistance in La0.9Sr0.1MnO3

被引：17

作者：

Biskup, N. ^{[1
]}

de Andres, A.

Nemes, N. M.

Garcia-Hernandez, M.

Glazyrin, K. V.

Mukovskii, Y. M.

机构：

[1] CSIC, Inst Ciencia Mat, Madrid 28049, Spain

[2] Moscow State Steel & Alloys Inst, Moscow 119049, Russia

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 22期

关键词：

D O I：

10.1063/1.2745220

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors report on colossal electroresistance (ER) in the ferromagnetic insulator manganite La0.9Sr0.1MnO3. The single crystal samples exhibit a transition into a low resistive state above a certain threshold current. Pulsed measurements demonstrate that this transition is not a consequence of heating. ER behaves similarly to magnetoresistance (MR) above the orbital order temperature T-OO. Below T-OO the MR is only 20% while ER enhances the conductivity by several orders of magnitude. Magnetic field and electric current have opposite effects on the conductivity, therefore, it seems that only the injected carriers are able to modify the ordering of e(g) Mn orbitals. (C) 2007 American Institute of Physics.

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页数：3

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