Journal article
Controlling spin-dependent tunneling by bandgap tuning in epitaxial rocksalt MgZnO films
- Abstract:
- Widespread application of magnetic tunnel junctions (MTJs) for information storage has so far been limited by the complicated interplay between tunnel magnetoresistance (TMR) ratio and the product of resistance and junction area (RA). An intricate connection exists between TMR ratio, RA value and the bandgap and crystal structure of the barrier, a connection that must be unravelled to optimise device performance and enable further applications to be developed. Here, we demonstrate a novel method to tailor the bandgap of an ultrathin, epitaxial Zn-doped MgO tunnel barrier with rocksalt structure. This structure is attractive due to its good Δ1 spin filtering effect and we show that MTJs based on tunable MgZnO barriers allow effective balancing of TMR ratio and RA value. In this way spin-dependent transport properties can be controlled, a key challenge for the development of spintronic devices.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Supplementary materials, 500.2KB, Terms of use)
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(Preview, Version of record, pdf, 1.1MB, Terms of use)
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- Publisher copy:
- 10.1038/srep07277
Authors
- Publisher:
- Nature Publishing Group
- Journal:
- Scientific Reports More from this journal
- Volume:
- 4
- Issue:
- 1
- Article number:
- 7277
- Publication date:
- 2014-12-02
- Acceptance date:
- 2014-11-11
- DOI:
- EISSN:
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2045-2322
- ISSN:
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2045-2322
- Language:
-
English
- Pubs id:
-
pubs:488993
- UUID:
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uuid:dce22d87-937b-45d5-8d39-cd59b988d9d5
- Local pid:
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pubs:488993
- Source identifiers:
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488993
- Deposit date:
-
2014-12-15
Terms of use
- Copyright holder:
- Li et al.
- Copyright date:
- 2014
- Rights statement:
- This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
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