Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 56, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/JJAP.56.020306
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan [16H06332, 16H03852]
- NIMS MI2I
- ImPACT Program of Council for Science, Technology and Innovation, Japan
- Grants-in-Aid for Scientific Research [16H03852, 16H06332] Funding Source: KAKEN
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We theoretically investigate two magnetic tunneling junctions (MTJs) with different semiconductor barriers, CuInSe2 (CIS) and CuGaSe2 (CGS), sandwiched between Fe electrodes. We find that Delta 1 wave functions provide dominant contributions to spin-dependent tunneling transport in both CIS-and CGS-based MTJs. We also find that the CGS-based MTJ has a much higher magnetoresistive (MR) ratio than the CIS-based MTJ, which indicates that a higher MR ratio is expected for a higher Ga concentration x in the recently reported CuIn1- xGaxSe2-based MTJs. Furthermore, we show that the CIS-and CGS-based MTJs have much smaller resistance-area products (RA) than the conventional MgO-based MTJs. (C) 2017 The Japan Society of Applied Physics
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