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Title: Parallel-leaky capacitance equivalent circuit model for MgO magnetic tunnel junctions
Authors: Sahadevan, A.M.
Gopinadhan, K. 
Bhatia, C.S. 
Yang, H. 
Issue Date: 15-Oct-2012
Citation: Sahadevan, A.M., Gopinadhan, K., Bhatia, C.S., Yang, H. (2012-10-15). Parallel-leaky capacitance equivalent circuit model for MgO magnetic tunnel junctions. Applied Physics Letters 101 (16) : -. ScholarBank@NUS Repository.
Abstract: The capacitance of MgO based magnetic tunnel junctions (MTJs) has been observed to be magnetic field dependent. We propose an equivalent circuit for the MTJs with a parallel-leaky capacitance (C l) across the series combination of geometric and interfacial capacitance. The analysis of junctions with different tunneling magnetoresistance (TMR) values suggests higher C l for low TMR junctions. Using Cole-Cole plots, the capacitive nature of MTJs is manifested. Fitting with Maxwell-Wagner capacitance model validates the RC parallel network model for MTJs and the extracted field dependent parameters match with the experimental values. © 2012 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.4760279
Appears in Collections:Staff Publications

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