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|Title:||Current driven discontinuous insulator-metal transition and low-field colossal magnetoresistance in Sm0.6 Sr0.4 MnO3||Authors:||Rebello, A.
|Issue Date:||12-Apr-2010||Citation:||Rebello, A., Mahendiran, R. (2010-04-12). Current driven discontinuous insulator-metal transition and low-field colossal magnetoresistance in Sm0.6 Sr0.4 MnO3. Applied Physics Letters 96 (15) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3386535||Abstract:||We show that with increasing magnitude of current (I), insulator-metal (I-M) transition in Sm0.6 Sr0.4 MnO3 becomes discontinuous and shifts down in temperature, which is accompanied by an abrupt decrease in temperature of the sample while cooling. The I-M transition exhibits a hysteresis while warming. A magnetic field of μ0 H=0.5 T results in -99% magnetoresistance for I=11 mA compared to -32% for I=1 mA. Our results underscore the importance of inhomogeneous Joule heating that leads to coexistence of the high temperature paramagnetic phase with the low temperature ferromagnetic phase over a wide temperature range. © 2010 American Institute of Physics.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/96141||ISSN:||00036951||DOI:||10.1063/1.3386535|
|Appears in Collections:||Staff Publications|
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