Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 51, Issue 11, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2015.2438092
Keywords
Magnetoresistance (MR); organic spintronics; organolead trihalide perovskite; spin injection
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We prepared CH3NH3PbI3-coated La0.67Sr0.33MnO3 (LSMO) granular composites. Significant magnetoresistance (MR) effect has been observed. The resistivity of CH3NH3PbI3-coated LSMO is more than five orders larger than that of LSMO. The MR effect from LSMO bulk can be safely excluded. The MR curves can be separated into two parts: 1) low-field MR (LFMR) and 2) high-field MR (HFMR). LFMR can be attributed to the spin retaining transport in CH3NH3PbI3 and spin-dependent scattering at the LSMO particle surface, and the HFMR can be explained by the field-dependent carrier injection at the interface of LSMO and CH3NH3PbI3. The observation of MR in CH3NH3PbI3-coated LSMO granular composites demonstrates the potential application of organolead trihalide perovskite as spin transporting medium in organic spintronics.
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