A novel magnetoresistance induced by charge ordering in ferromagnetic/charge-ordered/ferromagnetic trilayers
A novel magnetoresistance induced by charge ordering in ferromagnetic/charge-ordered/ferromagnetic trilayers
复制标题
铁磁/电荷有序/铁磁三层中电荷排序引起的新型磁阻
DOI:
10.1209/0295-5075/112/27007
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发表时间:
2015-10
期刊:
影响因子:
1.8
通讯作者:
Tan Weishi
中科院分区:
文献类型:
--
作者:
Wang Haiou;Li Jinwei;Su Kunpeng;Huo Dexuan;Tan Weishi
Microstructure, magnetoresistance (MR) and magnetic properties of Pr0.7Sr0.3MnO3/La0.5Ca0.5MnO3/Pr0.7Sr0.3MnO3 trilayers, which are shown to be tunable with different La0.5Ca0.5MnO3 spacer thickness, are investigated. The trilayer with 6 nm thick La0.5Ca0.5MnO3 spacer show at 195 K in 1 T and at 220 K in 9 T, which is realized through the double-exchange mechanism. In contrast, trilayers with the thicker La0.5Ca0.5MnO3 spacer show enhanced MR at a wide low-temperature range. The obtained at 50 K in 1 T in the trilayer with 18 nm thick La0.5Ca0.5MnO3 spacer is superior to that of other magnetic nanoscales. We surmise that this MR originates in the ferromagnetic/antiferromagnetic competition accompanied with the formation of a charge-ordered antiferromagnetic state and the collapse of the charge-ordered state at the applied magnetic field, rather than in the double-exchange mechanism. Large and tunable MR can be realized by controlling the strain state (the thickness of the La0.5Ca0.5MnO3 spacer), which can be applied in the used devices.
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影响因子:
8.6
作者:
Sen, Cengiz;Alvarez, Gonzalo;Dagotto, Elbio
通讯作者:
Dagotto, Elbio
影响因子:
3.2
作者:
Haiou Wang;Jie Zhang;Q. Jia;F. Xu;W. Tan;D. Huo;Ju Gao
通讯作者:
Haiou Wang;Jie Zhang;Q. Jia;F. Xu;W. Tan;D. Huo;Ju Gao
影响因子:
3.7
作者:
Ding, J. F.;Lebedev, O. I.;Wu, T.
通讯作者:
Wu, T.
DOI:
10.1103/physrevb.42.11690
发表时间:
1990-12
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
F. Legoues;Matthew Copel;R. Tromp
通讯作者:
F. Legoues;Matthew Copel;R. Tromp
影响因子:
3.7
作者:
A. Biswas;M. Rajeswari;R. Srivastava;Yuelin Li;T. Venkatesan;R. L. Greene;A. Millis
通讯作者:
A. Biswas;M. Rajeswari;R. Srivastava;Yuelin Li;T. Venkatesan;R. L. Greene;A. Millis